Bump version to 0.4.17

Co-authored-by: SAPHID <saphid@users.noreply.github.com>

.github/workflows/pc-host.yml

@@ -0,0 +1,53 @@
+name: PC host libraries
+# PC in the headset (Experimental). The Windows job builds the native adapter
+# and runs the real-encoder protocol tests; the installer's own bundle is
+# tested in release.yml. The Linux adapter from PR #38 isn't shipped or offered
+# in the app, but shares capture.c and controller.c, so it's still built here.
+# These builds add the GPL x264 encoder for headless tests only: they're never
+# uploaded or shipped.
+on:
+  pull_request:
+    paths: ["desktop/**", "ui/**", "tests/**", "scripts/macview-bench.py", ".github/workflows/pc-host.yml"]
+  workflow_dispatch:
+jobs:
+  linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, ubuntu-24.04-arm]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Native libraries
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install -y libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libglib2.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-pipewire libpipewire-0.3-modules libspa-0.2-modules
+          python3 desktop/build.py --with-x264
+      - name: Tests (real x264, fake capture consent/input)
+        env:
+          FRAME_PC_REQUIRE_NATIVE: "1"
+          FRAME_PC_REQUIRE_X264: "1"
+        run: python3 -m unittest discover -s tests -p 'test_pc*.py' -v
+  windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: msys2/setup-msys2@v2
+        with:
+          msystem: UCRT64
+          update: true
+      # A mirror's HTTP 429 once failed this install (2026-10-24): retry, so a
+      # flaky mirror can't break a release build.
+      - name: MSYS2 packages for the PC host
+        shell: msys2 {0}
+        run: |
+          for attempt in 1 2 3; do
+            pacman -S --needed --noconfirm mingw-w64-ucrt-x86_64-gcc mingw-w64-ucrt-x86_64-pkgconf mingw-w64-ucrt-x86_64-python mingw-w64-ucrt-x86_64-gstreamer mingw-w64-ucrt-x86_64-gst-plugins-base mingw-w64-ucrt-x86_64-gst-plugins-good mingw-w64-ucrt-x86_64-gst-plugins-bad mingw-w64-ucrt-x86_64-gst-plugins-ugly && exit 0
+            sleep $((attempt * 30))
+          done
+          exit 1
+      - name: Native build and tests (x264; WGC and MF need a desktop/GPU)
+        shell: msys2 {0}
+        run: |
+          python desktop/build.py --with-x264
+          FRAME_PC_REQUIRE_NATIVE=1 FRAME_PC_REQUIRE_X264=1 python -m unittest discover -s tests -p 'test_pc*.py' -v

.github/workflows/release.yml

@@ -3,14 +3,14 @@ name: release
 # Pushing a v* tag builds Frame Control for macOS, Windows and Linux and attaches
 # the installers to that tag's GitHub release (created as a draft if missing).
 # Pull requests that change how the installers are built (the Electron app, the
-# macOS helper it compiles, or this workflow) build the same installers as
+# Windows PC helper libraries, the macOS helper, or this workflow) build the same installers as
 # artifacts. ui/, scripts/, frame/ and apk-catalog/ are copied in as they are and
 # are tested by the checks workflow; run this one by hand to package them early.
 on:
   push:
     tags: ["v*"]
   pull_request:
-    paths: ["app/**", "mac/frame-mac-view/**", ".github/workflows/release.yml"]
+    paths: ["app/**", "desktop/**", "mac/frame-mac-view/**", ".github/workflows/release.yml"]
   workflow_dispatch:
 
 # A newer push to the same pull request supersedes a build still in progress.
@@ -26,7 +26,9 @@ jobs:
   # "view || create" could race and make duplicate drafts. The draft is tied to
   # the pushed tag (the tag must already exist on GitHub, then tag_name is set
   # explicitly), so scripts/publish-release.sh and `gh release upload` find it
-  # by tag. It is created with the REST API so the id comes straight back: the
+  # by tag. Editing a draft can make GitHub show an untagged-* name again; the
+  # upload step below recovers that exact draft if tag lookup fails. It is
+  # created with the REST API so the id comes straight back: the
   # release list can lag a fresh draft (v0.4.2's first run found nothing and
   # PATCHed releases/ with an empty id). tests/test_release_workflow.py runs
   # this step against tests/fakegh.
@@ -40,8 +42,13 @@ jobs:
           GH_REPO: ${{ github.repository }}
         run: |
           tag="${GITHUB_REF_NAME}"
-          # A rerun finds the draft an earlier attempt made.
-          id=$(gh api --paginate "repos/$GH_REPO/releases?per_page=100" --jq ".[] | select(.tag_name == \"$tag\") | .id" | head -n 1)
+          # A rerun finds the draft even if GitHub temporarily shows untagged-*.
+          id=$(gh api --paginate "repos/$GH_REPO/releases?per_page=100" \
+            --jq ".[] | select(.tag_name == \"$tag\" or (.draft and (.tag_name | startswith(\"untagged-\")) and .name == \"Frame Control ${tag#v}\")) | .id")
+          if [ -n "$id" ] && ! [[ "$id" =~ ^[0-9]+$ ]]; then
+            echo "expected one release for $tag; found: $id" >&2
+            exit 1
+          fi
           if [ -z "$id" ]; then
             # Given a missing tag, GitHub would create it on the default branch.
             gh api "repos/$GH_REPO/git/ref/tags/$tag" >/dev/null \
@@ -75,6 +82,28 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: "24"
+      # PC in the headset (Experimental, Windows only): our capture adapter and
+      # the GStreamer libraries it uses, bundled into resources/desktop/bundle.
+      - uses: msys2/setup-msys2@v2
+        if: runner.os == 'Windows'
+        with:
+          msystem: UCRT64
+          update: true
+      # A mirror's HTTP 429 once failed this install (2026-10-24): retry, so a
+      # flaky mirror can't break a release build.
+      - name: MSYS2 packages for the PC host
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
+        run: |
+          for attempt in 1 2 3; do
+            pacman -S --needed --noconfirm mingw-w64-ucrt-x86_64-gcc mingw-w64-ucrt-x86_64-pkgconf mingw-w64-ucrt-x86_64-python mingw-w64-ucrt-x86_64-gstreamer mingw-w64-ucrt-x86_64-gst-plugins-base mingw-w64-ucrt-x86_64-gst-plugins-good mingw-w64-ucrt-x86_64-gst-plugins-bad mingw-w64-ucrt-x86_64-gst-plugins-ugly && exit 0
+            sleep $((attempt * 30))
+          done
+          exit 1
+      - name: Windows PC streaming libraries
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
+        run: python desktop/build.py --out app/build/desktop/win-x64
       - name: Build
         working-directory: app
         shell: bash
@@ -95,13 +124,43 @@ jobs:
           for ($i = 0; $i -lt 60 -and -not (Test-Path (Join-Path $installed 'Uninstall Frame Control.exe')); $i++) { Start-Sleep 2 }
           node app/build/check-resources.js (Join-Path $installed 'resources') app/dist/win-unpacked/resources
           if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+      # From the installed app, so this also proves the installer carries the
+      # libraries. After the check above, and without writing __pycache__,
+      # so it can't change what that check compares.
+      - name: Test the installed app's Python with the Windows PC libraries
+        if: runner.os == 'Windows'
+        shell: bash
+        env:
+          PYTHONDONTWRITEBYTECODE: "1"
+        run: |
+          resources="$(cygpath -u "$LOCALAPPDATA")/Programs/Frame Control/resources"
+          python="$resources/python/python.exe"
+          native="$(cygpath -w "$resources/desktop/bundle")"
+          FRAME_PC_NATIVE="$native" FRAME_PC_REQUIRE_NATIVE=1 FRAME_PC_INSTALLER_BUNDLE=1 "$python" -B -m unittest discover -s tests -p 'test_pc*.py' -v
       - name: Upload to the release
         if: startsWith(github.ref, 'refs/tags/')
         shell: bash
         env:
           GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
         run: |
-          gh release upload "${GITHUB_REF_NAME}" ${{ matrix.files }} --clobber
+          # A release-notes edit can make GitHub expose a draft as untagged-*.
+          # Keep the normal upload path; recover only that lookup failure.
+          if result=$(gh release upload "${GITHUB_REF_NAME}" ${{ matrix.files }} --clobber 2>&1); then
+            printf '%s\n' "$result"
+            exit 0
+          fi
+          printf '%s\n' "$result" >&2
+          case "$result" in *"release not found"*) ;; *) exit 1 ;; esac
+          tag="${GITHUB_REF_NAME}"
+          ids=$(gh api --paginate "repos/$GH_REPO/releases?per_page=100" \
+            --jq ".[] | select(.draft and .name == \"Frame Control ${tag#v}\" and (.tag_name == \"$tag\" or (.tag_name | startswith(\"untagged-\")))) | .id")
+          if ! [[ "$ids" =~ ^[0-9]+$ ]]; then
+            echo "expected one matching draft for $tag; found: ${ids:-none}" >&2
+            exit 1
+          fi
+          gh api -X PATCH "repos/$GH_REPO/releases/$ids" -f tag_name="$tag" >/dev/null
+          gh release upload "$tag" ${{ matrix.files }} --clobber
       # Tagged builds are attached to the release above; only other builds need artifacts.
       - uses: actions/upload-artifact@v4
         if: ${{ !startsWith(github.ref, 'refs/tags/') }}

.gitignore

@@ -7,5 +7,15 @@ compat-db/.lakebed/
 tests/smoke/results/
 mac/bin/
 
+# Shared desktop streaming controller build products
+desktop/controller.dll
+desktop/controller.dylib
+desktop/controller.so
+desktop/*.obj
+desktop/*.lib
+desktop/*.exp
+desktop/bundle/
+app/build/desktop/
+
 # Downloaded at build time (frame/kdeconnect/fetch.py, app/build/fetch-deps.js)
 frame/kdeconnect/packages/

CHANGELOG.md

@@ -0,0 +1,97 @@
+# Changelog
+
+## Unreleased
+
+- Distinguish an unreadable gamescope panel list from a confirmed empty list in
+  Desktop Capture and Control (issue #73). Failed discovery now asks users to
+  check SteamVR and report the exact message and SteamOS version, rather than
+  claiming no panel is open. This does not establish a new capture fix.
+
+- Add an opt-in desktop low-battery alert without starting a family session.
+  Existing status reads confirm low charge and drain; recovery hysteresis and a
+  ten-minute cooldown limit repeat alerts. Off on page open/headset switch;
+  pauses with hidden-page status refreshes. No extra polling or headset changes.
+
+- Clarify first-time desktop downloads, installation and opening on the website
+  and README, including CPU choices, unsigned-app warnings, pairing fallback
+  and the source-only iOS build. Keep section navigation available on mobile.
+
+- Treat headset aliases and other CSV metadata as plain text in power and heat
+  exports, so spreadsheet formula prefixes cannot run when a report is opened.
+
+- Add desktop Tools → Power & heat report: bounded read-only one/five-minute
+  observations with progress, stop and HTML/JSON/CSV downloads. Received samples
+  survive stop, disconnect and headset switch, labeled incomplete and tied to the
+  original headset. Shared sampler/report modules ship with the app; no power or
+  thermal controls are added. Download before replacing a report or quitting.
+
+- Fix Return to Game Mode misidentifying full Plasma Desktop Mode when its VR
+  overlay also runs gamescope (issue #142). Session targets now determine the
+  mode; conflicting or incomplete evidence stays unknown. Use SteamOS's
+  `steamosctl` switch when available, with older selector commands retained.
+
+- Export read-only power and heat observations to an offline accessible HTML
+  report with JSON/CSV downloads. `--html FILE` limits sessions to ten minutes;
+  Ctrl+C saves received samples with an explicit incomplete state. Units,
+  unknown counts and sources remain visible; no headset controls are added.
+
+- Add a guarded `frame-doctor.sh --plan` with read-only, evidence-specific next
+  steps and explicit local baseline reports for before/after diagnostics (issue
+  #34). Restart risk blocks plans/comparisons; no automatic repairs, password
+  changes or headset security changes are performed.
+
+- Recover a tagged release upload when GitHub temporarily displays its draft
+  as `untagged-…` after an edit, without creating a duplicate draft or
+  silently retrying unrelated upload failures.
+
+- Import standalone APK/OBB backups from XAPK/APKS/APKM archives through the
+  existing preview and game-data setup flow. Unsafe archives, split sets and
+  Android/data restores are refused with guidance. This does not establish RE4
+  compatibility or diagnose its reported failure (issue #102).
+
+- Add `scripts/frame-power-sample.sh`, a bounded read-only SSH sampler for
+  battery, CPU, named temperatures, fan and available power rails (issue #52).
+  JSON samples/summaries and CSV exports retain explicit unavailable states;
+  active smoke-test locks stop measurement. No power settings are changed.
+
+- Show saved Android compatibility reports on store search cards and app details.
+  Reports refresh in the background, so a stalled database or credential lookup
+  cannot delay search. Warnings allow installation; build compatibility blockers
+  still apply. Public copies use this computer's reports, not private shared ratings.
+
+- Fix two cases where optional diagnostic logs could retain part of a headset
+  display name or an SSH host name, while preserving existing privacy redaction
+  (issue #81).
+
+- Keep the full host-key recovery explanation readable in Devices, including
+  long addresses, and remove doubled punctuation from the connection tooltip
+  (issue #87). Refresh stays within the header and switching headsets selects
+  the new headset's details.
+
+- Fix experimental PC screen capture on Windows builds whose streaming libraries
+  lack Windows Graphics Capture. Whole screens use Desktop Duplication; individual
+  windows are hidden with an explanation instead of failing when shown. A Windows
+  VM streamed a real desktop to the Frame; physical input remains unverified.
+
+- Add read-only battery health in Tools: charging state, temperature, cycle count,
+  and available capacity with explicit unknown states. The parser was checked
+  on a real Frame; the connected desktop UI was tested with synthetic readings.
+
+- Add Tools → Game storage: read-only headset filesystem capacity and Steam
+  library/game install-size breakdown, with unknown sizes, partial inventories
+  and permission/missing-drive states. Includes instructions for Steam's own
+  Move UI; Frame Control does not move or delete game files. The read-only
+  parser was checked on a real Frame; the connected UI and game moves were not.
+
+- Add `scripts/frame-doctor.sh` for read-only setup and pairing diagnostics,
+  with verified SSH identity, private summaries and actionable next steps
+  (issue #34). Connection steps links to the diagnostic guide. Repairs remain
+  manual; restart-loop evidence stops deeper diagnostics. The real Frame
+  verified the SSH connection and safety stop; deeper checks were skipped.
+- Fixed headset smoke cleanup reporting success while a smoke-title process
+  could remain running after its files were removed. Cleanup now stops and
+  rechecks processes tied to exact reserved test-title paths, uses PID handles
+  for safe TERM/KILL escalation, and records stopped PIDs. Unrelated titles and
+  shared Wine services are left alone. Verified with local Linux process
+  regressions and a 13/13 real Frame smoke run that stopped five test-owned
+  Proton process PIDs before removing the Windows test title.

README.md

@@ -7,9 +7,9 @@
 **Manage your Valve Steam Frame from your computer.**<br>
 See what the headset sees, install games and Android apps, move files and text across, and check battery and status, all over SSH.
 
-[![Latest release](https://img.shields.io/github/v/release/saphid/steam-frame?label=release&color=1a9fff)](https://github.com/saphid/steam-frame/releases/latest)
+[![Latest release](https://img.shields.io/github/v/release/saphid/frame-control?label=release&color=1a9fff)](https://github.com/saphid/frame-control/releases/latest)
 [![Platforms](https://img.shields.io/badge/macOS%20%7C%20Windows%20%7C%20Linux-2a475e?label=runs%20on)](#install)
-[![Checks](https://img.shields.io/github/actions/workflow/status/saphid/steam-frame/checks.yml?branch=main&label=checks)](https://github.com/saphid/steam-frame/actions/workflows/checks.yml)
+[![Checks](https://img.shields.io/github/actions/workflow/status/saphid/frame-control/checks.yml?branch=main&label=checks)](https://github.com/saphid/frame-control/actions/workflows/checks.yml)
 [![License: MIT](https://img.shields.io/badge/license-MIT-66c0f4)](LICENSE)
 
 [**Website**](https://frame-control.pages.dev) · [**Download**](#install) · [Trailer](#trailer) · [Features](#features) · [Set up the headset](#set-up-the-headset) · [Feedback](#feedback) · [Docs](#going-further)
@@ -19,7 +19,7 @@ See what the headset sees, install games and Android apps, move files and text a
 <img src="docs/img/frame-control.png" alt="Frame Control's Games tab: installed games, sideloaded titles, and your Steam library with Frame ratings" width="900">
 
 <a id="trailer"></a>
-<a href="https://github.com/saphid/steam-frame/releases/download/trailer/frame-control-trailer.mp4"><img src="docs/img/trailer.jpg" alt="Watch the Frame Control trailer" width="900"></a>
+<a href="https://github.com/saphid/frame-control/releases/download/trailer/frame-control-trailer.mp4"><img src="docs/img/trailer.jpg" alt="Watch the Frame Control trailer" width="900"></a>
 
 <sub>The trailer: 66 seconds, with sound. Downloads the MP4 from the trailer release.</sub>
 
@@ -44,13 +44,16 @@ Live video of what the lenses show, or of the app panel in use, flat and still h
 **🔋 Battery and status**<br>
 Charge, charging watts and time left, storage, memory, temperature, Wi-Fi, and what's running.
 
+For repeatable read-only battery, power-rail, temperature and fan measurements,
+use the [power and heat sampler](docs/power-and-heat.md).
+
 </td>
 </tr>
 <tr>
 <td valign="top">
 
 **🎮 Steam games**<br>
-Everything you own with its Steam Frame rating. Install onto the headset with live progress, and search the store.
+Everything you own with its Steam Frame rating. Install onto the headset with live progress, search the store, and force quit a game that stops responding.
 
 </td>
 <td valign="top">
@@ -63,17 +66,17 @@ About 4,500 F-Droid apps rated for the Frame. One click installs each as its own
 <tr>
 <td valign="top">
 
-**📁 Files, games and clipboard**<br>
-Drag files onto the window to send them. Drop a game's .zip, folder or .exe to add it to the Steam library, with Proton or the Linux runtime picked for you. Send text or your clipboard straight to the headset's desktop.
+**📁 Files and games**<br>
+Drag files onto the window to send them. Drop a game's .zip, folder or .exe to add it to the Steam library, with Proton or the Linux runtime picked for you.
 
 </td>
 <td valign="top">
 
-**📸 Screenshots**<br>
-Browse the shots you take in the headset and save them to your Pictures folder.
+**📸 Screenshots and recordings**<br>
+Browse the shots you take in the headset and save them to your Pictures folder, or have new ones and your Steam clips copied over automatically. Record what the headset shows, with its sound, or export Steam's clips at any length, as .mp4 files in your Videos folder ([not tested on a headset yet](docs/recording.md)).
 
-**⌨️ Keyboard and trackpad**<br>
-Type and point in the Frame's apps from your computer or phone, through KDE Connect, which Frame Control brings along and sets up on the Frame. Nothing else to install, anywhere.
+**⌨️ Type on the headset**<br>
+Type and point in the Frame's apps from your computer or phone, through KDE Connect, which Frame Control brings along and sets up on the Frame. Copy text to the headset's clipboard and back again. Nothing else to install, anywhere. Press T to open it.
 
 </td>
 </tr>
@@ -89,6 +92,14 @@ Install desktop apps like Moonlight or VLC, and set each Android app's resolutio
 **⚡ One-click tools**<br>
 SSH, SFTP, Steam Link, remote desktop, volume, sleep, restart and shut down.
 
+</td>
+</tr>
+<tr>
+<td colspan="2" valign="top">
+
+**💾 Backup and recovery**<br>
+Copy game saves, settings and Android app data to your computer, and restore them after a factory reset. Sign-in files and keys are never copied. A Return to Game Mode button helps when the headset is stuck in Desktop Mode. Not tested on a headset yet. [How it works](docs/backup-and-recovery.md).
+
 </td>
 </tr>
 </table>
@@ -105,17 +116,30 @@ already ships (sideloading a game copies Valve's own devkit scripts to
 
 ## Install
 
+**Install Frame Control on your computer, not on the headset.** The website is
+for downloads and instructions; it does not connect to your Frame in a browser.
+Choose the operating system and processor of the computer you will use.
+
 | | Download | Needs |
 |---|---|---|
-| **macOS** (Apple Silicon) | [Frame-Control-mac-arm64.dmg](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-mac-arm64.dmg) | Nothing extra |
-| **Windows** 10 / 11 (x64) | [Frame-Control-Setup-x64.exe](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-Setup-x64.exe) · [portable .zip](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-win-x64.zip) | Nothing extra |
-| **Linux** (x64) | [AppImage](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-linux-x86_64.AppImage) · [.deb](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-linux-amd64.deb) | `ssh` (most desktops have it) |
-| **Linux** (arm64) | [AppImage](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-linux-arm64.AppImage) · [.deb](https://github.com/saphid/steam-frame/releases/latest/download/Frame-Control-linux-arm64.deb) | `ssh`, and `adb` for Android apps (`sudo apt install adb`) |
+| **macOS** (Apple Silicon) | [Frame-Control-mac-arm64.dmg](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-mac-arm64.dmg) | Nothing extra |
+| **Windows** 10 / 11 (x64) | [Frame-Control-Setup-x64.exe](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-Setup-x64.exe) · [portable .zip](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-win-x64.zip) | OpenSSH Client (normally installed) |
+| **Linux** (x64) | [AppImage](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-x86_64.AppImage) · [.deb](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-amd64.deb) | `ssh` (most desktops have it) |
+| **Linux** (arm64) | [AppImage](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-arm64.AppImage) · [.deb](https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-arm64.deb) | `ssh`, and `adb` for Android apps (`sudo apt install adb`) |
 
-**iPhone and iPad:** the same features from your phone, with nothing to install on
-a computer. Build it from [`ios/`](ios) in Xcode; see [docs/iphone.md](docs/iphone.md).
+**Which build?** On a Mac, check Apple menu → About This Mac: the download is
+for Apple Silicon (M-series); no Intel Mac build is published. On Windows,
+check Settings → System → About → System type: the release is x64, not a native
+Windows ARM build. On Linux, `uname -m` reports `x86_64` (x64) or `aarch64`
+(arm64). Use `.deb` on Debian/Ubuntu, or AppImage on other distributions.
 
-The app brings its own Python and `adb`; SSH is built into macOS and Windows.
+**iPhone and iPad:** no App Store, TestFlight or `.ipa` download is provided in
+the current release. It runs from your phone without a computer after setup.
+Build it from [`ios/`](ios) in Xcode on a Mac with your own signing team; see
+[docs/iphone.md](docs/iphone.md).
+
+The app brings its own Python and `adb`. macOS includes SSH; Windows needs the
+OpenSSH Client optional feature (normally installed).
 From 0.4 it updates itself: when a new version is published, a banner offers
 **Update and restart**. It sends anonymous usage statistics, which you can turn
 off. Sharing compatibility results and error details is opt-in. See
@@ -128,7 +152,7 @@ distribution's. If you already have `adb`, the app uses yours.
 
 There's no paid Apple developer account behind it, so macOS says the app is
 damaged or can't be checked. Drag it to Applications, then clear the download
-quarantine once:
+quarantine once, only for a download you trust from the releases linked above:
 
 ```sh
 xattr -dr com.apple.quarantine "/Applications/Frame Control.app"
@@ -157,26 +181,44 @@ If it complains about FUSE, install `libfuse2` (Ubuntu 24.04+: `libfuse2t64`),
 or run it with `--appimage-extract-and-run`.
 </details>
 
+## Open the app
+
+- **macOS:** open the `.dmg`, drag **Frame Control** to **Applications**, then
+  open it from Applications. For the unsigned-app warning, use the macOS steps
+  above. Allow local network access and control of Terminal when prompted.
+- **Windows:** run the installer, then open **Frame Control** from Start. For
+  the portable download, extract the entire `.zip` first and run
+  `Frame Control.exe` inside it. See the SmartScreen note above.
+- **Linux:** install the `.deb` with your package installer and launch
+  **Frame Control** from your applications menu; or make the AppImage executable
+  and run it as described above. Install the OpenSSH client if `ssh` is missing.
+
 ## Set up the headset
 
-You type one password on the headset, once. Everything else happens on your
-computer.
+Keep the Frame awake and connect it and your computer to the same trusted local
+network. Guest Wi-Fi/client isolation can prevent discovery and connections.
 
 1. **On the Frame:** Steam Settings → System → **Enable Developer Mode**, then
-   in the Developer section, **Set User Password**. Pick something short:
-   you'll type it once more on your computer and then never again.
-2. **On your computer:** open Frame Control. It offers to **Set Up
-   Connection**, which finds the headset, creates an SSH key, and asks for that
-   password once in a terminal window. If it can't find the Frame, type the
-   IP address from the Frame's Quick Settings.
-
-   Before asking for the password it tries Valve's SteamOS devkit pairing: in
-   the headset, open Steam Settings → Developer → **Pair new host** and approve
-   the request, and no password is needed. (The service and the pairing-mode
-   step are verified on a Frame; the approval itself isn't yet. See
-   [SSH](docs/ssh.md#password-free-pairing-steamos-devkit-service).)
-3. That's it. The app now reaches the headset whenever it's awake and on the
-   same network. For anywhere else, see [Tailscale](docs/tailscale.md).
+   Developer → **Set User Password**. Choose a password that isn't easy to guess:
+   it also protects `sudo` and remote desktop, even after SSH keys are set up.
+2. **On your computer:** open Frame Control and choose **Set Up Connection…**.
+   If you dismissed the first-run prompt, use **Frame → Set Up Connection…**.
+   Setup opens a terminal and tries to find the headset. If it can't, use its IP
+   address from Quick Settings or Steam Settings → Internet. Windows/Linux setup
+   prompts for it; macOS exits instead. On macOS, return to the app →
+   **Devices & connection → + Add a headset…**, set SSH alias to `frame` for
+   the default headset, fill in **Address**, then choose **Set Up…**.
+3. **Pair or enter the password:** setup first tries Valve's devkit pairing.
+   Open Steam Settings → Developer → **Pair new host** in the headset and approve
+   only the request you just started. The service and pairing-mode step are
+   verified on a Frame; approval and key installation through that flow remain
+   unverified. If pairing fails or times out, setup falls back to asking for the
+   Developer Mode password in the computer's terminal. Password typing may show
+   no characters; press Enter when done. See [SSH details](docs/ssh.md#password-free-pairing-steamos-devkit-service).
+4. After setup succeeds, return to Frame Control. It uses SSH keys for later
+   connections whenever the Frame is awake and reachable. If it stays offline,
+   check Developer Mode, the address and network isolation, then run setup again.
+   For connections away from home, see [Tailscale](docs/tailscale.md).
 
 **What it changes:** only what you click. Installs go to your user account on
 the Frame (`--user` Flatpaks, Lepton instances, Steam downloads, sideloaded
@@ -218,12 +260,14 @@ Frame's software fits together, all checked against a real headset and labelled
 | [Sideloading Linux and Windows games](docs/sideloading.md) | A .zip, folder or .exe as a Steam Devkit Game, runtime detection |
 | [Install links for websites](docs/web-install.md) | `frame-control://install` links and manifests, the rules, a button to paste |
 | [VR comfort and HUD](docs/vr-utilities.md) · [Steam games](docs/steam-games.md) · [VR video](docs/vr-video.md) · [WebXR in Chromium](docs/webxr-chromium.md) | Installing and buying, watching VR180/360, the Chromium build |
+| [PC in the headset](docs/pc-in-headset.md) | Experimental, Windows only, off until you turn it on: a whole PC screen as a panel in the Frame. Tested in a Windows VM; individual windows need a WGC-enabled build |
 | [Mac in the headset](docs/mac-in-headset.md) | Mac windows and screens as panels in the Frame, with laser and keyboard input |
 | [VR mods and custom songs](docs/mods.md) | UEVR for Unreal games from Frame Control (install, play in VR, remove), the per-game table, Beat Saber blockers |
 | [SSH](docs/ssh.md) · [Streaming](docs/streaming.md) · [Files](docs/file-transfer.md) · [Panels](docs/panels.md) · [Tailscale](docs/tailscale.md) | Topic notes |
 | [Frame Control for iPhone](docs/iphone.md) | The iPhone and iPad app, how it runs the server on the Frame, pairing |
 | [Recovery and OS images](docs/recovery-and-images.md) | Where to download the Frame's OS, what's inside, testing without the headset |
 | [AI agents and assistant](docs/agents.md) | Key-free MCP tools, human approvals, and an opt-in assistant panel |
+| [Power and heat measurements](docs/power-and-heat.md) | Read-only sampling and offline HTML reports with JSON/CSV downloads |
 | [Testing](docs/testing.md) | Unit tests, end-to-end tests against a fake Frame in Docker, the headset smoke test and a Windows test VM |
 | [Open questions](docs/open-questions.md) | What's still unchecked |
 
@@ -239,8 +283,8 @@ Frame's software fits together, all checked against a real headset and labelled
   loopback `127.0.0.1:8080`) only through SSH tunnels. The compatibility
   database key (maintainer-only) is never written to the repo.
 - `steamos` has `sudo`, protected by the same Developer Mode password. Once
-  you've switched to key auth, a short password still protects `sudo` and
-  RDP, so pick one that isn't trivially guessable.
+  you've switched to key auth, that password still protects `sudo` and RDP,
+  so pick one that isn't trivially guessable.
 - Don't port-forward 22, 3389, or 5555–5599 from your router. For remote access,
   use Tailscale: `scripts/tailscale-on-frame.sh` (no sudo). In its userspace mode
   **every** Frame port is reachable from your tailnet, including Steam's DevTools
@@ -266,3 +310,5 @@ into a draft release, which reaches users once published. See
 licence, notably KDE Connect (GPL) for the keyboard and trackpad; see
 [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md). Steam, Steam Frame and SteamVR are trademarks of Valve
 Corporation. This project isn't affiliated with or endorsed by Valve.
+
+See [Game storage](docs/game-storage.md) for read-only headset space and Steam install sizes, and [the changelog](CHANGELOG.md) for unreleased changes.

THIRD_PARTY_NOTICES.md

@@ -10,6 +10,8 @@ ship other people's software, unchanged, each under its own licence:
 | adb (Android SDK Platform-Tools) | Desktop apps (not Linux arm64) | Apache-2.0 and others | `NOTICE.txt` in the app's `tools` folder |
 | Mozilla's CA certificate list, as published by curl | Desktop apps | MPL-2.0 | https://curl.se/docs/caextract.html |
 | Electron | Desktop apps | MIT (Chromium: BSD-3-Clause and others) | `LICENSE` and `LICENSES.chromium.html` in the app |
+| GStreamer 1.x, a few of its plugins and the libraries they need, as [MSYS2](https://packages.msys2.org/) builds them | Windows app only, for the experimental [PC in the headset](docs/pc-in-headset.md) | LGPL-2.1-or-later and others (per package); the GPL x264 encoder is left out | `libraries.json` (exact package versions) and the `licenses` folder in the app's `desktop/bundle` folder |
 
 Frame Control starts KDE Connect and talks to it over its network protocol;
-it doesn't link to it or include its code.
+it doesn't link to it or include its code. On Windows, Frame Control's own
+`pc-host.dll` links to GStreamer dynamically; the libraries are unmodified.

app/build/check-resources.js

@@ -13,6 +13,10 @@ const path = require("path");
 
 const REQUIRED = [
   "ui/server.py",
+  "ui/frame_power.py",
+  "ui/frame_status.py",
+  "scripts/frame_power_sample.py",
+  "scripts/frame_power_report.py",
   "ui/frame_android.py",
   "frame/android/lepton-app.sh",
   "frame/openxr-compat/XrApiLayer_FRAME_compat.json",

app/main.js

@@ -282,6 +282,12 @@ ipcMain.handle("server:restart", (e) => {
   if (win && e.sender === win.webContents && e.senderFrame && e.senderFrame.url.startsWith("data:")) restartServer();
 });
 ipcMain.handle("clipboard:read", (e) => fromUi(e) ? clipboard.readText() : "");
+// Text from the headset's clipboard onto this computer's.
+ipcMain.handle("clipboard:write", (e, text) => {
+  if (!fromUi(e) || typeof text !== "string") return false;
+  clipboard.writeText(text);
+  return true;
+});
 ipcMain.handle("preferences:read", (e) => fromUi(e) ? preferences.read() : {});
 ipcMain.handle("preferences:write", (e, key, value) => fromUi(e) ? preferences.write(key, value) : false);
 // A PNG or JPEG (a screenshot) onto the clipboard as an image.

app/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "frame-control",
-  "version": "0.4.9",
+  "version": "0.4.17",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "frame-control",
-      "version": "0.4.9",
+      "version": "0.4.17",
       "license": "MIT",
       "devDependencies": {
         "electron": "^44.4.5",

app/package.json

@@ -1,7 +1,7 @@
 {
   "name": "frame-control",
   "productName": "Frame Control",
-  "version": "0.4.9",
+  "version": "0.4.17",
   "description": "Desktop app for managing a Valve Steam Frame over SSH",
   "private": true,
   "main": "main.js",
@@ -68,7 +68,9 @@
         "from": "../scripts",
         "to": "scripts",
         "filter": [
-          "*.sh"
+          "*.sh",
+          "frame_power_sample.py",
+          "frame_power_report.py"
         ]
       },
       {
@@ -198,7 +200,16 @@
         "zip"
       ],
       "icon": "build/icon.png",
-      "artifactName": "Frame-Control-win-${arch}.${ext}"
+      "artifactName": "Frame-Control-win-${arch}.${ext}",
+      "extraResources": [
+        {
+          "from": "build/desktop/${os}-${arch}",
+          "to": "desktop/bundle",
+          "filter": [
+            "**/*"
+          ]
+        }
+      ]
     },
     "nsis": {
       "oneClick": false,

app/preferences.js

@@ -1,7 +1,7 @@
 // Client choices live outside the local server's changing URL/origin.
 const fs = require("node:fs");
 const path = require("node:path");
-const KEYS = ["mvSeparate", "padUsed"];
+const KEYS = ["mvSeparate", "padUsed", "pcView"];
 const valid = value => value === "0" || value === "1";
 
 function preferenceStore(file) {

app/preload.js

@@ -1,5 +1,5 @@
-// Lets the page read this computer's clipboard through Electron, so sending it
-// to the Frame needs no pbpaste, PowerShell, xclip or wl-clipboard. Also tells
+// Lets the page read and write this computer's clipboard through Electron, so sending
+// it to the Frame, and copying the Frame's back, needs no pbpaste, PowerShell, xclip or wl-clipboard. Also tells
 // the page where a dropped file or folder lives, so a folder can be sideloaded
 // as a title without zipping it (the local server reads it from there).
 // It can put a screenshot on the clipboard as an image, open Set Up Connection when
@@ -17,6 +17,7 @@ contextBridge.exposeInMainWorld("frameApp", {
   },
   notify: (message, request) => ipcRenderer.invoke("comfort:notify", message, request),
   readClipboard: () => ipcRenderer.invoke("clipboard:read"),
+  writeClipboard: (text) => ipcRenderer.invoke("clipboard:write", text),
   writeImage: (bytes) => ipcRenderer.invoke("clipboard:writeImage", bytes),
   setUpConnection: () => ipcRenderer.invoke("connection:setup"),
   restartServer: () => ipcRenderer.invoke("server:restart"),  // the "couldn't start" page's Try Again

app/test/preferences.test.js

@@ -36,7 +36,7 @@ test("client choices survive a new native session and local server origin", t =>
   assert.deepEqual(first.read(), { mvSeparate: "1", padUsed: "1" });
 });
 
-test("only the two non-sensitive binary choices can enter the native store", t => {
+test("only the non-sensitive binary choices can enter the native store", t => {
   const file = fixture(t), store = preferenceStore(file);
   for (const [key, value] of [["token", "secret"], ["__proto__", "1"], ["padUsed", true], ["mvSeparate", "yes"]]) {
     assert.throws(() => store.write(key, value), /Invalid preference/);
@@ -58,3 +58,11 @@ test("a missing or damaged preference file retains usable defaults", t => {
   store.write("padUsed", "1");
   assert.deepEqual(store.read(), { padUsed: "1" });
 });
+
+test("the PC in the headset opt-in is remembered and off unless saved", t => {
+  const file = fixture(t), store = preferenceStore(file);
+  assert.equal(store.read().pcView, undefined);
+  store.write("pcView", "1");
+  assert.deepEqual(preferenceStore(file).read(), { pcView: "1" });
+  assert.throws(() => store.write("pcView", "on"), /Invalid preference/);
+});

bench/results/2026-09-28-c5fc552-dirty-pc-agent-frame-arm64-hairpin.json

@@ -0,0 +1,311 @@
+{
+ "label": "pc-agent-frame-arm64-hairpin",
+ "date": "2026-09-28T22:36:19",
+ "commit": "c5fc552+dirty",
+ "config": {
+  "quality": "balanced",
+  "mode": "separate",
+  "net": "none",
+  "delay_ms": 0,
+  "buffer_ms": 250,
+  "host": "frame",
+  "usb": false,
+  "ssh_opts": [],
+  "encoder": "",
+  "duration_s": 10.0,
+  "browser_flags": []
+ },
+ "frame_build": "20260925.6191901",
+ "mac": "26.5.2",
+ "host_platform": "Linux aarch64, SteamOS Frame, BUILD_ID 20260925.6191901 (synthetic host only)",
+ "source": "",
+ "pc_host": true,
+ "headset": "0:03.056203 [Info] - 1 - leaving standby",
+ "scenarios": [
+  {
+   "scenario": "test",
+   "frames_sent": 351,
+   "frames_drawn": 351,
+   "frames_shown": 324,
+   "duration_s": 10.1,
+   "stages_ms": {
+    "capture": {
+     "p50": 0.1,
+     "p95": 0.2,
+     "p99": 0.5,
+     "n": 351
+    },
+    "queue": {
+     "p50": 0.1,
+     "p95": 0.3,
+     "p99": 0.4,
+     "n": 351
+    },
+    "encode": {
+     "p50": 2.0,
+     "p95": 2.9,
+     "p99": 3.5,
+     "n": 351
+    },
+    "socket": {
+     "p50": 0.1,
+     "p95": 0.4,
+     "p99": 0.6,
+     "n": 351
+    },
+    "network": {
+     "p50": 11.6,
+     "p95": 75.7,
+     "p99": 130.1,
+     "n": 351
+    },
+    "decode": {
+     "p50": 0.7,
+     "p95": 2.1,
+     "p99": 4.1,
+     "n": 351
+    },
+    "draw": {
+     "p50": 0.4,
+     "p95": 0.8,
+     "p99": 1.1,
+     "n": 351
+    },
+    "present": {
+     "p50": 0.8,
+     "p95": 18.1,
+     "p99": 24.9,
+     "n": 324
+    },
+    "content": {
+     "p50": 15.1,
+     "p95": 80.3,
+     "p99": 134.2,
+     "n": 351
+    },
+    "content_shown": {
+     "p50": 21.0,
+     "p95": 71.8,
+     "p99": 146.3,
+     "n": 324
+    }
+   },
+   "fps": 34.8,
+   "fps_shown": 32.0,
+   "late_pct": 53.41,
+   "stall_max": 226.8,
+   "stalls_over_100ms": 7,
+   "mbps": 0.26,
+   "keyframes": 6,
+   "size": "1280x720",
+   "captured": 607,
+   "viewer_never_drawn": 0,
+   "input_ms": {
+    "p50": 43.3,
+    "p95": 98.4,
+    "p99": 110.1,
+    "n": 18
+   },
+   "input_shown_ms": {
+    "p50": 54.7,
+    "p95": 98.9,
+    "p99": 114.0,
+    "n": 18
+   },
+   "input_parts_ms": {
+    "uplink": {
+     "p50": 17.1,
+     "p95": 48.3,
+     "p99": 53.1,
+     "n": 18
+    },
+    "mac": {
+     "p50": 12.5,
+     "p95": 32.9,
+     "p99": 35.7,
+     "n": 18
+    },
+    "back": {
+     "p50": 16.8,
+     "p95": 50.0,
+     "p99": 55.9,
+     "n": 18
+    }
+   },
+   "inputs": {
+    "asked": 18,
+    "sent": 18,
+    "seen": 18
+   },
+   "timeline": [
+    {
+     "t": 0,
+     "fps": 38,
+     "mbps": 0.3,
+     "content_p50": 14.8,
+     "content_p95": 25.3,
+     "bitrate": 2764800,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 1,
+     "fps": 33,
+     "mbps": 0.24,
+     "content_p50": 15.6,
+     "content_p95": 103.5,
+     "bitrate": 3845448,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 2,
+     "fps": 39,
+     "mbps": 0.28,
+     "content_p50": 15.6,
+     "content_p95": 29.9,
+     "bitrate": 5283790,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 3,
+     "fps": 25,
+     "mbps": 0.21,
+     "content_p50": 17.8,
+     "content_p95": 175.9,
+     "bitrate": 2764800,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 4,
+     "fps": 34,
+     "mbps": 0.22,
+     "content_p50": 15.4,
+     "content_p95": 69.8,
+     "bitrate": 2764800,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 5,
+     "fps": 38,
+     "mbps": 0.29,
+     "content_p50": 17.7,
+     "content_p95": 68.7,
+     "bitrate": 2764800,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 6,
+     "fps": 38,
+     "mbps": 0.26,
+     "content_p50": 15.0,
+     "content_p95": 18.2,
+     "bitrate": 3091280,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 7,
+     "fps": 30,
+     "mbps": 0.22,
+     "content_p50": 19.2,
+     "content_p95": 111.0,
+     "bitrate": 1725204,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 8,
+     "fps": 35,
+     "mbps": 0.26,
+     "content_p50": 13.4,
+     "content_p95": 102.6,
+     "bitrate": 1725204,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 9,
+     "fps": 38,
+     "mbps": 0.28,
+     "content_p50": 12.3,
+     "content_p95": 20.9,
+     "bitrate": 1725204,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 10,
+     "fps": 3,
+     "mbps": 0.02,
+     "content_p50": 20.9,
+     "content_p95": 24.7,
+     "bitrate": 1725204,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    }
+   ],
+   "adapt": [],
+   "content_p50": 15.1,
+   "content_p95": 80.3,
+   "input_p50": 43.3,
+   "input_p95": 98.4,
+   "grades": {
+    "input_replies": "local",
+    "content_p50": "local",
+    "content_p95": "acceptable",
+    "input_p50": "local",
+    "input_p95": "acceptable",
+    "fps": "bad",
+    "late_pct": "bad",
+    "stall_max": "acceptable"
+   },
+   "controller": {
+    "target": 3442081,
+    "ceiling": 5529600,
+    "tier": 0,
+    "fps": 60,
+    "scale": 1.0,
+    "baseRtt": 13.334,
+    "inFlight": 1,
+    "slack": 71.738,
+    "adapt": true
+   },
+   "events": [
+    {
+     "t": 3.77,
+     "e": "target 2764800 bit/s; tier 0"
+    },
+    {
+     "t": 7.42,
+     "e": "target 1725204 bit/s; tier 0"
+    }
+   ],
+   "source_fps": 60.1,
+   "cpu": {
+    "host": "not sampled"
+   },
+   "viewer": "h264 software; ANGLE (Mesa, zink Vulkan 1.4(Turnip Adreno (TM) 750 (MESA_TURNIP)), OpenGL 4.6); raf 71 Hz",
+   "show_s": 1.88,
+   "panel": "valve.steam.desktopgame.2001932457",
+   "src": "test",
+   "route": "network"
+  }
+ ],
+ "proof": "Synthetic x264 PC agent runs on the Frame itself, forwarded via Mac and back. Not Windows/Linux desktop capture or laser input."
+}

bench/results/2026-09-28-cd20243-pc-agent-frame-arm64-final.json

@@ -0,0 +1,302 @@
+{
+ "label": "pc-agent-frame-arm64-final",
+ "date": "2026-09-28T22:55:27",
+ "commit": "cd20243",
+ "config": {
+  "quality": "balanced",
+  "mode": "native",
+  "net": "none",
+  "delay_ms": 0,
+  "buffer_ms": 250,
+  "host": "frame",
+  "usb": false,
+  "ssh_opts": [],
+  "encoder": "",
+  "duration_s": 10.0,
+  "browser_flags": []
+ },
+ "frame_build": "20260925.6191901",
+ "mac": "26.5.2",
+ "host_platform": "Linux aarch64, SteamOS Frame, BUILD_ID 20260925.6191901 (synthetic host only)",
+ "source": "",
+ "pc_host": true,
+ "headset": "0:03.056203 [Info] - 1 - leaving standby",
+ "scenarios": [
+  {
+   "scenario": "test",
+   "frames_sent": 400,
+   "frames_drawn": 400,
+   "frames_shown": 339,
+   "duration_s": 10.2,
+   "stages_ms": {
+    "capture": {
+     "p50": 0.1,
+     "p95": 0.1,
+     "p99": 0.2,
+     "n": 400
+    },
+    "queue": {
+     "p50": 0.1,
+     "p95": 0.2,
+     "p99": 0.4,
+     "n": 400
+    },
+    "encode": {
+     "p50": 2.0,
+     "p95": 2.7,
+     "p99": 3.1,
+     "n": 400
+    },
+    "socket": {
+     "p50": 0.1,
+     "p95": 0.3,
+     "p99": 0.4,
+     "n": 400
+    },
+    "network": {
+     "p50": 11.8,
+     "p95": 25.2,
+     "p99": 37.8,
+     "n": 400
+    },
+    "decode": {
+     "p50": 0.7,
+     "p95": 1.5,
+     "p99": 2.0,
+     "n": 400
+    },
+    "draw": {
+     "p50": 0.3,
+     "p95": 0.7,
+     "p99": 1.0,
+     "n": 400
+    },
+    "present": {
+     "p50": 0.8,
+     "p95": 19.3,
+     "p99": 26.8,
+     "n": 339
+    },
+    "content": {
+     "p50": 15.1,
+     "p95": 28.6,
+     "p99": 41.3,
+     "n": 400
+    },
+    "content_shown": {
+     "p50": 17.6,
+     "p95": 39.0,
+     "p99": 47.2,
+     "n": 339
+    }
+   },
+   "fps": 39.3,
+   "fps_shown": 33.4,
+   "late_pct": 50.25,
+   "stall_max": 69.3,
+   "stalls_over_100ms": 0,
+   "mbps": 0.35,
+   "keyframes": 6,
+   "size": "1280x720",
+   "captured": 612,
+   "viewer_never_drawn": 0,
+   "input_ms": {
+    "p50": 76.6,
+    "p95": 98.2,
+    "p99": 127.8,
+    "n": 19
+   },
+   "input_shown_ms": {
+    "p50": 80.5,
+    "p95": 107.8,
+    "p99": 128.1,
+    "n": 16
+   },
+   "input_parts_ms": {
+    "uplink": {
+     "p50": 36.5,
+     "p95": 57.6,
+     "p99": 83.2,
+     "n": 19
+    },
+    "mac": {
+     "p50": 14.6,
+     "p95": 31.3,
+     "p99": 31.7,
+     "n": 19
+    },
+    "back": {
+     "p50": 15.1,
+     "p95": 32.8,
+     "p99": 36.2,
+     "n": 19
+    }
+   },
+   "inputs": {
+    "asked": 19,
+    "sent": 19,
+    "seen": 19
+   },
+   "timeline": [
+    {
+     "t": 0,
+     "fps": 40,
+     "mbps": 0.34,
+     "content_p50": 11.7,
+     "content_p95": 27.4,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 1,
+     "fps": 39,
+     "mbps": 0.37,
+     "content_p50": 11.9,
+     "content_p95": 28.2,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 2,
+     "fps": 41,
+     "mbps": 0.35,
+     "content_p50": 11.4,
+     "content_p95": 16.6,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 3,
+     "fps": 39,
+     "mbps": 0.37,
+     "content_p50": 12.7,
+     "content_p95": 28.0,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 4,
+     "fps": 38,
+     "mbps": 0.33,
+     "content_p50": 15.3,
+     "content_p95": 30.0,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 5,
+     "fps": 39,
+     "mbps": 0.37,
+     "content_p50": 16.7,
+     "content_p95": 28.5,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 6,
+     "fps": 41,
+     "mbps": 0.38,
+     "content_p50": 15.9,
+     "content_p95": 29.4,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 7,
+     "fps": 41,
+     "mbps": 0.31,
+     "content_p50": 15.6,
+     "content_p95": 28.2,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 8,
+     "fps": 38,
+     "mbps": 0.38,
+     "content_p50": 15.5,
+     "content_p95": 25.9,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 9,
+     "fps": 38,
+     "mbps": 0.29,
+     "content_p50": 16.7,
+     "content_p95": 28.8,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 10,
+     "fps": 6,
+     "mbps": 0.03,
+     "content_p50": 17.6,
+     "content_p95": 23.1,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    }
+   ],
+   "adapt": [],
+   "content_p50": 15.1,
+   "content_p95": 28.6,
+   "input_p50": 76.6,
+   "input_p95": 98.2,
+   "grades": {
+    "input_replies": "local",
+    "content_p50": "local",
+    "content_p95": "local",
+    "input_p50": "acceptable",
+    "input_p95": "acceptable",
+    "fps": "bad",
+    "late_pct": "bad",
+    "stall_max": "local"
+   },
+   "controller": {
+    "target": 5529600,
+    "ceiling": 5529600,
+    "tier": 0,
+    "fps": 60,
+    "scale": 1.0,
+    "baseRtt": 12.332,
+    "inFlight": 0,
+    "slack": 74.12,
+    "adapt": true
+   },
+   "events": [],
+   "source_fps": 60.0,
+   "cpu": {
+    "host": "not sampled"
+   },
+   "viewer": "h264 software; ANGLE (Mesa, zink Vulkan 1.4(Turnip Adreno (TM) 750 (MESA_TURNIP)), OpenGL 4.6); raf 72 Hz",
+   "show_s": 1.75,
+   "panel": "valve.steam.desktopgame.2001932457",
+   "src": "test",
+   "route": "network"
+  }
+ ],
+ "proof": "Synthetic x264 PC agent runs on the Frame itself, forwarded via Mac and back. Not Windows/Linux desktop capture or laser input."
+}

desktop/build-controller.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+"""Build the common controller for the Python PC host (a C11 compiler needed)."""
+import os
+from pathlib import Path
+import subprocess
+import sys
+
+root = Path(__file__).resolve().parent
+suffix = '.dll' if sys.platform == 'win32' else '.dylib' if sys.platform == 'darwin' else '.so'
+out = root / ('controller' + suffix)
+if sys.platform == 'win32' and os.environ.get('CC', 'cl') == 'cl':
+    cmd = ['cl', '/nologo', '/O2', '/LD', '/std:c11', str(root / 'controller.c'), '/link', '/OUT:' + str(out)]
+else:
+    cmd = [os.environ.get('CC', 'cc'), '-O2', '-std=c11', '-shared', '-fPIC', str(root / 'controller.c'), '-o', str(out)]
+subprocess.run(cmd, cwd=root, check=True)
+print(out)

desktop/build.py

@@ -0,0 +1,126 @@
+#!/usr/bin/env python3
+"""Build our native PC adapter and bundle its ordinary shared libraries.
+
+Run on the target architecture after installing GStreamer development packages.
+No GStreamer executable or desktop streaming application is shipped or invoked.
+Linux libc, display/GPU drivers and the portal service remain platform pieces.
+
+x264 is GPL, so the bundle the Windows installer ships leaves it out: Windows
+encodes with Media Foundation. --with-x264 adds it for CI's headless protocol
+tests, which have no GPU or desktop to encode with.
+"""
+import argparse
+import json
+import os
+from pathlib import Path
+import re
+import shutil
+import subprocess
+import sys
+
+ROOT = Path(__file__).resolve().parent
+
+
+def output(*args):
+    return subprocess.check_output(args, text=True).strip()
+
+
+def build(destination, with_x264=False):
+    win = sys.platform == 'win32'
+    destination.mkdir(parents=True, exist_ok=True)
+    modules = ['gstreamer-1.0', 'gstreamer-app-1.0', 'gstreamer-video-1.0']
+    if not win:
+        modules += ['gio-unix-2.0']
+    import shlex
+    flags = shlex.split(output('pkg-config', '--cflags', '--libs', *modules))
+    lib = destination / ('pc-host.dll' if win else 'pc-host.so')
+    cmd = [os.environ.get('CC', 'gcc' if win else 'cc'), '-std=c11', '-O2', '-shared', '-Wall', '-Wextra']
+    if not win:
+        cmd += ['-fPIC', '-Wl,-rpath,$ORIGIN/lib']
+    subprocess.run(cmd + [str(ROOT / f) for f in ('controller.c', 'capture.c', 'portal.c')] + flags + ['-o', str(lib)], check=True)
+    prefix = Path(output('pkg-config', '--variable=prefix', 'gstreamer-1.0'))
+    plugin_dir = Path(output('pkg-config', '--variable=pluginsdir', 'gstreamer-1.0'))
+    plugins_out, libs_out = destination / 'lib' / 'gstreamer-1.0', destination / ('bin' if win else 'lib')
+    plugins_out.mkdir(parents=True, exist_ok=True)
+    libs_out.mkdir(parents=True, exist_ok=True)
+    names = ['coreelements', 'videotestsrc', 'videoconvertscale', 'app', 'jpeg', 'videoparsersbad']
+    if with_x264:
+        names.append('x264')
+    names += ['d3d11', 'mediafoundation'] if win else ['pipewire', 'va']
+    pending = [lib]
+    for name in names:
+        matches = list(plugin_dir.glob('*gst' + name + ('.dll' if win else '.so')))
+        if not matches:
+            raise SystemExit('Missing GStreamer library: ' + name)
+        for source in matches:
+            target = plugins_out / source.name
+            shutil.copy2(source, target)
+            pending.append(source)
+    if not win:
+        # PipeWire dynamically loads support and protocol modules. ldd cannot
+        # discover those; bundle them with a private client-only config instead
+        # of accidentally loading a different distro's client modules/config.
+        libdir = plugin_dir.parent
+        for relative in ('pipewire-0.3/libpipewire-module-protocol-native.so',
+                         'pipewire-0.3/libpipewire-module-client-node.so',
+                         'pipewire-0.3/libpipewire-module-adapter.so',
+                         'spa-0.2/support/libspa-support.so',
+                         'spa-0.2/support/libspa-dbus.so',
+                         'spa-0.2/videoconvert/libspa-videoconvert.so'):
+            source = libdir / relative
+            if not source.is_file():
+                raise SystemExit('Missing PipeWire runtime library: ' + str(source))
+            target = destination / 'lib' / relative
+            target.parent.mkdir(parents=True, exist_ok=True)
+            shutil.copy2(source, target)
+            pending.append(source)
+        config = destination / 'share' / 'pipewire'
+        config.mkdir(parents=True, exist_ok=True)
+        (config / 'client.conf').write_text(
+            'context.spa-libs = { support.* = support/libspa-support video.* = videoconvert/libspa-videoconvert }\n'
+            'context.modules = [\n'
+            '  { name = libpipewire-module-protocol-native }\n'
+            '  { name = libpipewire-module-client-node }\n'
+            '  { name = libpipewire-module-adapter }\n'
+            ']\n')
+    copied = set()
+    while pending:
+        binary = pending.pop()
+        if win:
+            imported = re.findall(r'DLL Name:\s*(\S+)', output('objdump', '-p', str(binary)))
+            dependencies = [prefix / 'bin' / name for name in imported]
+        else:
+            dependencies = [Path(p) for p in re.findall(r'=>\s+(/\S+)', output('ldd', str(binary)))]
+        for dep in dependencies:
+            if not dep.is_file() or dep.name in copied:
+                continue
+            if not win and re.match(r'lib(c|m|dl|rt|pthread|resolv)\.so', dep.name):
+                continue
+            shutil.copy2(dep, libs_out / dep.name)
+            copied.add(dep.name)
+            pending.append(dep)
+    # License texts and package provenance accompany the dynamically linked
+    # libraries. Distribution builders keep the upstream package/source URLs.
+    licenses = destination / 'licenses'
+    licenses.mkdir(exist_ok=True)
+    if win:
+        source = prefix / 'share' / 'licenses'
+        if source.exists():
+            shutil.copytree(source, licenses, dirs_exist_ok=True)
+        packages = output('pacman', '-Q') if shutil.which('pacman') else 'See MSYS2 build log'
+    else:
+        packages = output('dpkg-query', '-W', '-f=${Package} ${Version}\n') if shutil.which('dpkg-query') else ''
+        # Debian copyright files contain licenses and source homepage details.
+        for path in Path('/usr/share/doc').glob('*/copyright'):
+            shutil.copy2(path, licenses / (path.parent.name + '.copyright'))
+    (destination / 'libraries.json').write_text(json.dumps(dict(gstreamer=output('pkg-config', '--modversion', 'gstreamer-1.0'),
+        plugins=names, libraries=sorted(copied), packages=packages), indent=2))
+    print(lib)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('--out', type=Path, default=ROOT / 'bundle')
+    parser.add_argument('--with-x264', action='store_true', help='add the GPL x264 encoder (CI tests only, never shipped)')
+    args = parser.parse_args()
+    build(args.out.resolve(), args.with_x264)

desktop/capture.c

@@ -0,0 +1,134 @@
+/* Frame Control's capture/encode adapter. GStreamer is a bundled library;
+ * capture uses WGC on Windows and the consented PipeWire fd on Linux. */
+#include "controller.h"
+#include <gst/gst.h>
+#include <gst/app/gstappsink.h>
+#include <gst/video/video-event.h>
+#include <string.h>
+
+typedef int (*Gate)(int stage, int64_t pts, int64_t capture, int64_t arrived);
+typedef struct {
+    GstElement *pipeline, *encoder, *sink, *raw_queue;
+    Gate gate;
+    GstSample *sample;
+    GstMapInfo map;
+    int mapped;
+    char error[512];
+} Capture;
+typedef struct { const unsigned char *data; int size, key, width, height; int64_t pts; } Encoded;
+FC_API int64_t fc_now(void) {return g_get_monotonic_time();}
+FC_API void fc_gst_init(void) {gst_init(NULL,NULL);}
+FC_API int fc_has_element(const char *name) {
+    GstElementFactory *f=gst_element_factory_find(name);
+    if(!f)return 0;gst_object_unref(f);return 1;
+}
+FC_API int fc_has_property(const char *element, const char *property) {
+    /* Probe the same initialized GStreamer instance that capture uses. The
+     * bundled MSYS2 plugin can omit optional WGC properties entirely. */
+    GstElement *source=gst_element_factory_make(element,NULL);
+    if(!source)return 0;
+    int found=g_object_class_find_property(G_OBJECT_GET_CLASS(source),property)!=NULL;
+    gst_object_unref(source);
+    return found;
+}
+static GstPadProbeReturn probe(GstPad *pad,GstPadProbeInfo *info,gpointer data) {
+    Capture *c=data; GstBuffer *b=GST_PAD_PROBE_INFO_BUFFER(info);
+    if(!b)return GST_PAD_PROBE_OK;
+    int64_t now=fc_now(), cap=now;
+    GstClock *clock=gst_element_get_clock(c->pipeline);
+    if(clock && GST_BUFFER_PTS_IS_VALID(b)) {
+        GstClockTime current=gst_clock_get_time(clock),origin=gst_element_get_base_time(c->pipeline);
+        if(current>=origin && current-origin>=GST_BUFFER_PTS(b))
+            cap-= (int64_t)((current-origin-GST_BUFFER_PTS(b))/1000);
+    }
+    if(clock)gst_object_unref(clock);
+    int stage=GPOINTER_TO_INT(g_object_get_data(G_OBJECT(pad),"stage"));
+    if(stage==1) return c->gate(stage,(int64_t)GST_BUFFER_PTS(b),cap,now)>0 ? GST_PAD_PROBE_OK : GST_PAD_PROBE_DROP;
+    int phase=0;
+    for(;;) {
+        /* While congested, prefer a newer raw picture queued upstream. If
+         * nothing changed, retain this last picture until the gate opens;
+         * an idle window must not stay stale after a dropped final update. */
+        guint queued=0;
+        if(phase && c->raw_queue)g_object_get(c->raw_queue,"current-level-buffers",&queued,NULL);
+        if(queued)return GST_PAD_PROBE_DROP;
+        int decision=c->gate(phase,(int64_t)GST_BUFFER_PTS(b),cap,now);
+        if(decision)return decision>0 ? GST_PAD_PROBE_OK : GST_PAD_PROBE_DROP;
+        phase=2;g_usleep(2000);
+    }
+}
+FC_API Capture *fc_capture_open(const char *pipeline,Gate gate,char *error,int capacity) {
+    GError *e=NULL;Capture *c=g_new0(Capture,1);c->gate=gate;
+    c->pipeline=gst_parse_launch(pipeline,&e);
+    if(e || !c->pipeline) {
+        g_strlcpy(error,e?e->message:"No pipeline",capacity);
+        if(e)g_error_free(e);if(c->pipeline)gst_object_unref(c->pipeline);g_free(c);return NULL;
+    }
+    c->encoder=gst_bin_get_by_name(GST_BIN(c->pipeline),"enc");
+    c->sink=gst_bin_get_by_name(GST_BIN(c->pipeline),"out");
+    GstElement *raw=gst_bin_get_by_name(GST_BIN(c->pipeline),"gate");
+    if(!c->encoder || !c->sink || !raw) {
+        g_strlcpy(error,"Pipeline is missing enc, out or gate",capacity);
+        if(raw)gst_object_unref(raw);if(c->encoder)gst_object_unref(c->encoder);
+        if(c->sink)gst_object_unref(c->sink);gst_object_unref(c->pipeline);g_free(c);return NULL;
+    }
+    c->raw_queue=gst_bin_get_by_name(GST_BIN(c->pipeline),"raw_queue");
+    GstPad *p=gst_element_get_static_pad(raw,"src");
+    g_object_set_data(G_OBJECT(p),"stage",GINT_TO_POINTER(0));
+    gst_pad_add_probe(p,GST_PAD_PROBE_TYPE_BUFFER,probe,c,NULL);gst_object_unref(p);gst_object_unref(raw);
+    p=gst_element_get_static_pad(c->encoder,"sink");
+    g_object_set_data(G_OBJECT(p),"stage",GINT_TO_POINTER(1));
+    gst_pad_add_probe(p,GST_PAD_PROBE_TYPE_BUFFER,probe,c,NULL);gst_object_unref(p);
+    gst_element_set_state(c->pipeline,GST_STATE_PLAYING);
+    return c;
+}
+FC_API int fc_capture_pull(Capture *c,Encoded *out) {
+    if(c->mapped) {gst_buffer_unmap(gst_sample_get_buffer(c->sample),&c->map);c->mapped=0;}
+    if(c->sample){gst_sample_unref(c->sample);c->sample=NULL;}
+    GstBus *bus=gst_element_get_bus(c->pipeline);
+    GstMessage *m=gst_bus_pop_filtered(bus,GST_MESSAGE_ERROR);gst_object_unref(bus);
+    if(m) {
+        if(GST_MESSAGE_TYPE(m)==GST_MESSAGE_ERROR) {
+            GError *e=NULL;char *debug=NULL;gst_message_parse_error(m,&e,&debug);
+            g_strlcpy(c->error,e->message,sizeof(c->error));g_error_free(e);g_free(debug);
+        } else g_strlcpy(c->error,"The capture source closed",sizeof(c->error));
+        gst_message_unref(m);return -1;
+    }
+    c->sample=gst_app_sink_try_pull_sample(GST_APP_SINK(c->sink),100*GST_MSECOND);
+    if(!c->sample) {
+        if(gst_app_sink_is_eos(GST_APP_SINK(c->sink))) {
+            g_strlcpy(c->error,"The capture source closed",sizeof(c->error));return -1;
+        }
+        return 0;
+    }
+    GstBuffer *b=gst_sample_get_buffer(c->sample);
+    if(!gst_buffer_map(b,&c->map,GST_MAP_READ))return 0;
+    c->mapped=1;out->data=c->map.data;out->size=(int)c->map.size;
+    out->key=!GST_BUFFER_FLAG_IS_SET(b,GST_BUFFER_FLAG_DELTA_UNIT);out->pts=(int64_t)GST_BUFFER_PTS(b);
+    const GstStructure *s=gst_caps_get_structure(gst_sample_get_caps(c->sample),0);
+    gst_structure_get_int(s,"width",&out->width);gst_structure_get_int(s,"height",&out->height);return 1;
+}
+FC_API const char *fc_capture_error(Capture *c) {return c->error;}
+FC_API void fc_capture_bitrate(Capture *c,int bps) {
+    g_object_set(c->encoder,"bitrate",(guint)MAX(1,bps/1000),NULL);
+}
+FC_API void fc_capture_test(Capture *c,uint32_t input) {
+    GstElement *source=gst_bin_get_by_name(GST_BIN(c->pipeline),"source");
+    if(source) {
+        /* Each benchmark click visibly changes the ball, before injection is
+         * timestamped. This is a response, not merely a protocol input echo. */
+        guint color=0xff000000u | ((input*2654435761u)&0x00ffffffu);
+        g_object_set(source,"foreground-color",color,NULL);gst_object_unref(source);
+    }
+}
+FC_API void fc_capture_key(Capture *c) {
+    GstPad *p=gst_element_get_static_pad(c->encoder,"src");
+    gst_pad_send_event(p,gst_video_event_new_upstream_force_key_unit(GST_CLOCK_TIME_NONE,TRUE,0));gst_object_unref(p);
+}
+FC_API void fc_capture_close(Capture *c) {
+    gst_element_set_state(c->pipeline,GST_STATE_NULL);
+    if(c->mapped)gst_buffer_unmap(gst_sample_get_buffer(c->sample),&c->map);
+    if(c->sample)gst_sample_unref(c->sample);
+    if(c->raw_queue)gst_object_unref(c->raw_queue);
+    gst_object_unref(c->sink);gst_object_unref(c->encoder);gst_object_unref(c->pipeline);g_free(c);
+}

desktop/controller.c

@@ -0,0 +1,130 @@
+/* A C port of the Mac agent's RateController (mac/frame-mac-view/Sources/
+ * Controller.swift) for the Windows host. Same gate, demand protection, bitrate
+ * recovery and tier hysteresis; bounded sample buffers. The Mac agent keeps its
+ * Swift original, so a change to either must be made to both:
+ * tests/test_pc_controller.py checks this one against the Swift trace. */
+#include "controller.h"
+#include <stdlib.h>
+#include <string.h>
+#define CAP 1024
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#define MAX(a,b) ((a)>(b)?(a):(b))
+typedef struct { int64_t t, v; uint32_t seq; } Sample;
+typedef struct { Sample a[CAP]; int n; } Samples;
+struct FCController {
+    int max_fps, enabled, ceiling, target, tier, frame_bytes, held, signal, saw_ack;
+    int64_t decrease, increase, below, above, slack;
+    Samples flight, rtts, acked, sent, captures;
+};
+static const int fps[] = {60,45,30,30,30}, scale[] = {100,100,100,75,50};
+static const double floors[] = {.45,.28,.16,.08,0};
+static void remove_first(Samples *s, int n) {
+    s->n -= n; memmove(s->a, s->a+n, (size_t)s->n*sizeof(Sample));
+}
+static void add(Samples *s, Sample v, int cap) {
+    if (s->n >= cap) remove_first(s, 1);
+    s->a[s->n++] = v;
+}
+static void expire(Samples *s, int64_t oldest) {
+    int n=0; while(n<s->n && s->a[n].t<oldest) n++;
+    remove_first(s,n);
+}
+static int64_t base(FCController *c) {
+    int64_t v=0;
+    for(int i=0;i<c->rtts.n;i++) if(!i || c->rtts.a[i].v<v) v=c->rtts.a[i].v;
+    return v;
+}
+static int compare(const void *a, const void *b) {
+    int64_t x=*(const int64_t*)a, y=*(const int64_t*)b;
+    return (x>y)-(x<y);
+}
+static int64_t quantile(Samples *s,int64_t since,int numerator,int denominator) {
+    int64_t a[CAP]; int n=0;
+    for(int i=0;i<s->n;i++) if(s->a[i].t>since) a[n++]=s->a[i].v;
+    if(!n) return 0;
+    qsort(a,(size_t)n,sizeof(int64_t),compare);
+    return a[n*numerator/denominator];
+}
+static int rate(Samples *s) {
+    int64_t total=0; for(int i=0;i<s->n;i++) total+=s->a[i].v;
+    return (int)MIN(total*16,2147483647);
+}
+FCController *fc_new(int max_fps,int enabled) {
+    FCController *c=calloc(1,sizeof(*c));
+    if(c) {c->max_fps=MAX(1,max_fps);c->enabled=enabled;c->slack=40000;}
+    return c;
+}
+void fc_free(FCController *c) {free(c);}
+void fc_ceiling(FCController *c,int bps) {
+    if(!c->target || c->target>bps) c->target=bps;
+    c->ceiling=bps;
+}
+int fc_gate(FCController *c,int64_t now,int counts) {
+    if(!c->enabled || !c->saw_ack) return 1;
+    expire(&c->flight,now-2000000);
+    if(!c->flight.n) return 1;
+    int64_t interval=1000000/MIN(c->max_fps,fps[c->tier]);
+    int window=MAX(3,(int)((base(c)+c->slack)/interval)+1);
+    if(c->flight.n<window && now-c->flight.a[0].t<=base(c)+c->slack) return 1;
+    if(counts) c->held++;
+    return 0;
+}
+void fc_capture(FCController *c,int64_t now) {add(&c->captures,(Sample){now,0,0},256);}
+void fc_sent(FCController *c,uint32_t seq,int bytes,int64_t now) {
+    Sample s={now,bytes,seq};add(&c->flight,s,512);add(&c->sent,s,CAP);
+}
+int fc_ack(FCController *c,uint32_t seq,int64_t now) {
+    c->saw_ack=1;
+    for(int i=0;i<c->flight.n;i++) if(c->flight.a[i].seq==seq) {
+        Sample s=c->flight.a[i];remove_first(&c->flight,i+1);
+        add(&c->rtts,(Sample){now,now-s.t,0},CAP);
+        add(&c->acked,(Sample){now,s.v,0},CAP);return 1;
+    }
+    return 0;
+}
+int fc_update(FCController *c,int64_t now) {
+    expire(&c->rtts,now-10000000);expire(&c->acked,now-500000);
+    expire(&c->sent,now-500000);expire(&c->flight,now-2000000);
+    expire(&c->captures,now-1000000);
+    if(!c->enabled || c->ceiling<=0) return 0;
+    int64_t baseline=base(c), spread=quantile(&c->rtts,now-2000000,9,10);
+    int64_t jitter=spread ? spread-baseline : 0;
+    c->slack=1000000/MIN(c->max_fps,fps[c->tier])+MIN(MAX(jitter*3/2,25000),80000);
+    int64_t recent=quantile(&c->rtts,now-300000,1,2);
+    int64_t queue=recent ? recent-baseline : 0;
+    int64_t age=c->flight.n ? now-c->flight.a[0].t : 0;
+    int delivered=rate(&c->acked),sending=rate(&c->sent);
+    if(c->sent.n) c->frame_bytes=sending/16/c->sent.n;
+    int demand=(int)MIN((int64_t)MIN(c->captures.n,MIN(c->max_fps,fps[c->tier]))*c->frame_bytes*8,2147483647);
+    int signal=(sending>=c->target/2 && queue>40000)||c->held>=3||age>baseline+100000;
+    int congested=signal && c->signal;c->signal=signal;c->held=0;
+    if(congested && now-c->decrease>300000) {
+        int next=MAX(300000,MIN((int64_t)c->target*4/5,MAX((int64_t)delivered*9/10,c->target/2)));
+        if(demand>0 && (int64_t)demand*2<=(int64_t)c->target*5/4) next=MAX(next,MIN(c->target,(int64_t)demand*2));
+        c->target=next;c->decrease=now;
+    } else if(!congested && now-c->decrease>1000000 && now-c->increase>250000 && c->target<c->ceiling &&
+              (sending>(int64_t)c->target*6/10 || now-c->decrease>3000000)) {
+        c->target=MIN(c->ceiling,(int64_t)(c->target*1.1)+50000);c->increase=now;
+    }
+    double share=(double)c->target/MAX(c->ceiling,1);
+    if(c->tier<4 && share<floors[c->tier] && sending>=(int64_t)c->target*7/10) {
+        if(!c->below)c->below=now;
+        if(now-c->below>500000) {
+            for(c->tier=0;c->tier<4 && share<floors[c->tier];c->tier++) {}
+            c->below=0;
+        }
+    } else c->below=0;
+    if(c->tier>0 && share>floors[c->tier-1]*1.25) {
+        if(!c->above)c->above=now;
+        if(now-c->above>2000000) {c->tier--;c->above=0;}
+    } else c->above=0;
+    return c->target;
+}
+int64_t fc_value(FCController *c,int field) {
+    switch(field) {
+    case 0:return c->target;case 1:return c->ceiling;case 2:return c->tier;
+    case 3:return MIN(c->max_fps,fps[c->tier]);case 4:return scale[c->tier];
+    case 5:return base(c);case 6:return c->flight.n;case 7:return c->slack;
+    default:return 0;
+    }
+}

desktop/controller.h

@@ -0,0 +1,29 @@
+/* Shared latency controller. Times are monotonic host microseconds.
+ * Callers serialize access. Capture is gated BEFORE encoding: dropping an
+ * encoded inter frame would break the decoder's reference chain. */
+#ifndef FRAME_CONTROLLER_H
+#define FRAME_CONTROLLER_H
+#include <stdint.h>
+#ifdef _WIN32
+#define FC_API __declspec(dllexport)
+#else
+#define FC_API
+#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+typedef struct FCController FCController;
+FC_API FCController *fc_new(int fps, int enabled);
+FC_API void fc_free(FCController *c);
+FC_API void fc_ceiling(FCController *c, int bps);
+FC_API int fc_gate(FCController *c, int64_t now, int counts);
+FC_API void fc_capture(FCController *c, int64_t now);
+FC_API void fc_sent(FCController *c, uint32_t seq, int bytes, int64_t now);
+FC_API int fc_ack(FCController *c, uint32_t seq, int64_t now);
+FC_API int fc_update(FCController *c, int64_t now);
+/* target, ceiling, tier, fps, scale percent, baseline us, in flight, slack us */
+FC_API int64_t fc_value(FCController *c, int field);
+#ifdef __cplusplus
+}
+#endif
+#endif

desktop/portal.c

@@ -0,0 +1,147 @@
+/* xdg-desktop-portal RemoteDesktop + ScreenCast, one consented session per
+ * panel. PipeWire receives the portal fd, never the unrestricted daemon fd.
+ * Input uses only the devices granted in Start's response. */
+#ifndef _WIN32
+#include "controller.h"
+#include <gio/gio.h>
+#include <gio/gunixfdlist.h>
+#include <unistd.h>
+#include <string.h>
+#define BUS "org.freedesktop.portal.Desktop"
+#define PATH "/org/freedesktop/portal/desktop"
+#define RD "org.freedesktop.portal.RemoteDesktop"
+#define SC "org.freedesktop.portal.ScreenCast"
+typedef struct {
+    GDBusConnection *bus;
+    GMainContext *context;
+    char *session;
+    int fd;
+    unsigned node, devices;
+    int width,height;
+} Portal;
+typedef struct {GVariant *result;int done;unsigned code;} Response;
+static void response(GDBusConnection *c,const char *sender,const char *path,const char *iface,
+                     const char *signal,GVariant *params,gpointer data) {
+    (void)c;(void)sender;(void)path;(void)iface;(void)signal;
+    Response *r=data;g_variant_get(params,"(u@a{sv})",&r->code,&r->result);r->done=1;
+}
+static void option(GVariantBuilder *b,const char *key,GVariant *v) {g_variant_builder_add(b,"{sv}",key,v);}
+static GVariant *request(Portal *p,const char *iface,const char *method,GVariant *args,
+                         const char *token,char *error,int capacity) {
+    char *sender=g_strdup(g_dbus_connection_get_unique_name(p->bus)+1);
+    for(char *c=sender;*c;c++)if(*c=='.')*c='_';
+    char *path=g_strdup_printf(PATH "/request/%s/%s",sender,token);g_free(sender);
+    Response r={0};GError *e=NULL;
+    guint sub=g_dbus_connection_signal_subscribe(p->bus,BUS,"org.freedesktop.portal.Request","Response",
+                                                 path,NULL,G_DBUS_SIGNAL_FLAGS_NONE,response,&r,NULL);
+    GVariant *reply=g_dbus_connection_call_sync(p->bus,BUS,PATH,iface,method,args,G_VARIANT_TYPE("(o)"),
+                                               G_DBUS_CALL_FLAGS_NONE,10000,NULL,&e);
+    if(reply)g_variant_unref(reply);
+    int64_t deadline=g_get_monotonic_time()+120000000;
+    while(!e && !r.done && g_get_monotonic_time()<deadline) {
+        while(g_main_context_iteration(p->context,FALSE)) {}
+        g_usleep(10000);
+    }
+    if(!r.done) {
+        GVariant *closed=g_dbus_connection_call_sync(p->bus,BUS,path,"org.freedesktop.portal.Request","Close",
+                                NULL,NULL,G_DBUS_CALL_FLAGS_NONE,2000,NULL,NULL);
+        if(closed)g_variant_unref(closed);
+    }
+    g_dbus_connection_signal_unsubscribe(p->bus,sub);g_free(path);
+    if(e || !r.done || r.code) {
+        g_strlcpy(error,e?e->message:!r.done?"Screen sharing request timed out":"Screen sharing was cancelled or refused",capacity);
+        if(e)g_error_free(e);if(r.result)g_variant_unref(r.result);return NULL;
+    }
+    return r.result;
+}
+FC_API void fc_portal_close(Portal *p) {
+    if(!p)return;
+    if(p->session && p->bus) {
+        GVariant *r=g_dbus_connection_call_sync(p->bus,BUS,p->session,"org.freedesktop.portal.Session","Close",
+                                                NULL,NULL,G_DBUS_CALL_FLAGS_NONE,2000,NULL,NULL);
+        if(r)g_variant_unref(r);
+    }
+    if(p->fd>=0){close(p->fd);p->fd=-1;}
+    g_free(p->session);if(p->bus)g_object_unref(p->bus);
+    if(p->context)g_main_context_unref(p->context);g_free(p);
+}
+/* Each pipeline gets a fresh restricted PipeWire connection. A dup of a
+ * previously consumed protocol socket is not a new connection.
+ * Ownership: the Portal owns p->fd for its whole life and is its only closer.
+ * pipewiresrc never takes the fd it is given: its core connects with
+ * pw_context_connect_fd(ctx, fcntl(fd, F_DUPFD_CLOEXEC, 3), ...) and that
+ * duplicate is what PipeWire closes on teardown (src/gst/gstpipewirecore.c,
+ * unchanged from 0.3.19 through 1.x). So closing p->fd here is not a double
+ * close; not closing it would leak one socket per pipeline reopen. The
+ * caller closes the previous pipeline before asking for a new fd. */
+FC_API int fc_portal_refresh(Portal *p,char *error,int capacity) {
+    GVariantBuilder b;g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    GUnixFDList *fds=NULL;GError *e=NULL;
+    GVariant *r=g_dbus_connection_call_with_unix_fd_list_sync(p->bus,BUS,PATH,SC,"OpenPipeWireRemote",
+         g_variant_new("(oa{sv})",p->session,&b),G_VARIANT_TYPE("(h)"),G_DBUS_CALL_FLAGS_NONE,10000,NULL,&fds,NULL,&e);
+    if(!r){g_strlcpy(error,e->message,capacity);g_error_free(e);return -1;}
+    int handle;g_variant_get(r,"(h)",&handle);g_variant_unref(r);
+    int fd=g_unix_fd_list_get(fds,handle,&e);g_object_unref(fds);
+    if(fd<0){g_strlcpy(error,e->message,capacity);g_error_free(e);return -1;}
+    if(p->fd>=0)close(p->fd);
+    p->fd=fd;return fd;
+}
+FC_API Portal *fc_portal_select(char *error,int capacity) {
+    Portal *p=g_new0(Portal,1);p->fd=-1;p->context=g_main_context_new();
+    g_main_context_push_thread_default(p->context);
+    GError *e=NULL;GVariant *r=NULL;
+    p->bus=g_bus_get_sync(G_BUS_TYPE_SESSION,NULL,&e);
+    if(!p->bus) {g_strlcpy(error,e->message,capacity);g_error_free(e);goto fail;}
+    GVariantBuilder b;char token[64],session[64];
+    g_snprintf(session,sizeof(session),"fc_%u",g_random_int());
+    g_snprintf(token,sizeof(token),"fc_%u",g_random_int());
+    g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    option(&b,"handle_token",g_variant_new_string(token));option(&b,"session_handle_token",g_variant_new_string(session));
+    r=request(p,RD,"CreateSession",g_variant_new("(a{sv})",&b),token,error,capacity);if(!r)goto fail;
+    g_variant_lookup(r,"session_handle","s",&p->session);g_variant_unref(r);r=NULL;
+    if(!p->session){g_strlcpy(error,"Portal did not return a session",capacity);goto fail;}
+    g_snprintf(token,sizeof(token),"fc_%u",g_random_int());g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    option(&b,"handle_token",g_variant_new_string(token));option(&b,"types",g_variant_new_uint32(3));
+    r=request(p,RD,"SelectDevices",g_variant_new("(oa{sv})",p->session,&b),token,error,capacity);if(!r)goto fail;g_variant_unref(r);
+    g_snprintf(token,sizeof(token),"fc_%u",g_random_int());g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    option(&b,"handle_token",g_variant_new_string(token));option(&b,"types",g_variant_new_uint32(3));
+    option(&b,"multiple",g_variant_new_boolean(FALSE));option(&b,"cursor_mode",g_variant_new_uint32(2));
+    r=request(p,SC,"SelectSources",g_variant_new("(oa{sv})",p->session,&b),token,error,capacity);if(!r)goto fail;g_variant_unref(r);
+    g_snprintf(token,sizeof(token),"fc_%u",g_random_int());g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    option(&b,"handle_token",g_variant_new_string(token));
+    r=request(p,RD,"Start",g_variant_new("(osa{sv})",p->session,"",&b),token,error,capacity);if(!r)goto fail;
+    g_variant_lookup(r,"devices","u",&p->devices);
+    GVariant *streams=g_variant_lookup_value(r,"streams",G_VARIANT_TYPE("a(ua{sv})"));
+    if(streams && g_variant_n_children(streams)>0) {
+        GVariant *entry=g_variant_get_child_value(streams,0),*props=NULL;
+        g_variant_get(entry,"(u@a{sv})",&p->node,&props);
+        g_variant_lookup(props,"size","(ii)",&p->width,&p->height);
+        g_variant_unref(props);g_variant_unref(entry);
+    }
+    if(streams)g_variant_unref(streams);g_variant_unref(r);r=NULL;
+    if(!p->node || p->width<=0 || p->height<=0) {g_strlcpy(error,"Portal returned no stream size",capacity);goto fail;}
+    if(fc_portal_refresh(p,error,capacity)<0)goto fail;
+    g_main_context_pop_thread_default(p->context);return p;
+fail:
+    g_main_context_pop_thread_default(p->context);fc_portal_close(p);return NULL;
+}
+FC_API int fc_portal_value(Portal *p,int field) {
+    switch(field){case 0:return p->fd;case 1:return (int)p->node;case 2:return p->width;
+                 case 3:return p->height;case 4:return (int)p->devices;default:return 0;}
+}
+FC_API int fc_portal_input(Portal *p,int type,double x,double y,int code,int down) {
+    const char *method=NULL;GVariant *args=NULL;GVariantBuilder b;g_variant_builder_init(&b,G_VARIANT_TYPE_VARDICT);
+    if(type==0 && (p->devices&2)) {
+        method="NotifyPointerMotionAbsolute";args=g_variant_new("(oa{sv}udd)",p->session,&b,p->node,x,y);
+    } else if(type==1 && (p->devices&2)) {
+        method="NotifyPointerButton";args=g_variant_new("(oa{sv}iu)",p->session,&b,code,(guint)down);
+    } else if(type==2 && (p->devices&2)) {
+        method="NotifyPointerAxis";args=g_variant_new("(oa{sv}dd)",p->session,&b,x,y);
+    } else if(type==3 && (p->devices&1)) {
+        method="NotifyKeyboardKeysym";args=g_variant_new("(oa{sv}iu)",p->session,&b,code,(guint)down);
+    } else return 0;
+    GError *e=NULL;GVariant *r=g_dbus_connection_call_sync(p->bus,BUS,PATH,RD,method,args,NULL,
+                                                       G_DBUS_CALL_FLAGS_NONE,2000,NULL,&e);
+    if(e)g_error_free(e);if(r)g_variant_unref(r);return r!=NULL;
+}
+#endif

docs/apks.md

@@ -190,6 +190,35 @@ IzzyOnDroid, curated GitHub releases, itch.io). **Library** shows the apps on th
 Frame as cards, with Play and a menu for Test, Report and Remove; the display
 settings and recent reports are below it.
 
+Store search cards and app details also show **Reported not working** or
+**Reported issues** when saved compatibility reports say so. Details include
+the report date, version and notes. These are advisories: Install remains
+available unless the selected build has an existing compatibility blocker
+(for example, no arm64-v8a build or Android API above 30). Reports never clear
+those blockers. Apps reported not working are excluded from Home's featured
+app and recommendation shelves; search and category results still show them.
+An unrated install failure caused by the wrong APK architecture or Android API
+is ignored, using the same rules as the catalogue. A person's rating takes
+priority over automated results, with the latest rating winning.
+
+Reports warm in a background worker at server start. Search and details read
+only the last complete in-memory snapshot and schedule a single background
+refresh after 60 seconds; they never wait for disk, Keychain, a subprocess or
+the report database. During initial loading they show the usual build verdict;
+after a refresh, the next search or detail request sees the reports. Failed
+refreshes keep the previous snapshot and retry after another 60 seconds.
+
+**Availability:** public copies benefit from their own saved reports, including
+reports for apps outside the bundled catalogue, across every source with the
+same package name. This does not give public users the private shared ratings.
+The checked-in `apk-catalog/site/apps.js` contains predictions and no tested
+report verdicts, so it cannot supply a useful public report snapshot. No private
+reports, free-text notes or credentials are exported or published. The existing
+maintainer loader still uses its configured database access in the background;
+the search feature adds no sharing, endpoint or network destination. Tests leave
+the hook off by default (`FRAME_COMPAT_SEARCH_REPORTS=0` also disables it in
+server subprocesses) and use synthetic reports to exercise refresh behavior.
+
 The store groups apps by what a headset is good for, not by F-Droid's list:
 VR, Games, Emulators, Watch & listen, Read & learn, Create, Work, Web & chat
 and Tools (`ui/apk_sources/_categories.py`). A VR app is always in VR. Otherwise
@@ -402,3 +431,49 @@ app instance and back up/restore a stopped instance's private app data. See
 [SideQuest features and limits](sidequest.md) for commands, archive scope and
 verification status. These paths have offline coverage; real Frame storage and
 permissions remain unverified. They do not change APK install or launch behavior.
+
+
+## Local APK/OBB backups and Android bundles
+
+In **Android apps → Import Android game → Choose game files…** (or **Send to Frame**), choose one
+standalone APK and its matching `main.<version>.<package>.obb` and/or
+`patch.<version>.<package>.obb` files together. The desktop app also discovers
+matching OBB files beside a lone selected APK. Browser uploads use only the
+files you selected. Installed apps can receive OBB-only imports.
+
+You can instead select **one `.xapk`, `.apks`, or `.apkm` archive** containing
+one standalone APK and optional matching OBBs. These extensions describe
+containers, not a guarantee that their contents are supported. OBBs may be
+at the archive root, under `<package>/`, or under `Android/obb/<package>/`;
+one enclosing backup folder is allowed. Known manifest/icon/signature
+sidecars are ignored; the APK manifest determines the package. Unknown files,
+unsafe paths, links, encrypted entries, duplicate paths (including case
+collisions), more than 4,096 entries, or more than 16 GiB unpacked are refused.
+Staging also keeps 64 MiB of free disk space. Payloads still have the regular
+one-APK/99-OBB limit. Ordinary `.zip` files keep the PC-title import route;
+extract an Android ZIP yourself and select its APK/OBBs.
+
+The importer previews the app and files before **Import game & data**.
+Confirming authorizes installing the app, starting it to prepare Android,
+checking the running package/version, copying OBBs through the existing
+verified data helper, and closing the game. Open it from Steam afterwards.
+If setup fails, read the error and retry the same backup; do not uninstall
+first, since that deletes saves. An app that cannot start may also prevent
+data setup. Uploaded and extracted staging is removed on cancellation,
+inspection failure, or job completion/failure; abandoned imports expire
+through the existing one-hour staging lifecycle. Original local files stay intact.
+
+**Limits:** this backup importer refuses multiple APKs, split-only APKs and
+bases marked as requiring splits. It does not select device variants or restore
+`Android/data`, private app data, saves, or entitlements. For the separate
+restricted native-library/asset split workflow see
+[Quest split APKs](quest-import.md#split-apks) and the CLI above. Resource,
+code and feature splits are not supported by that merger.
+
+For issue #102, the RE4 report only establishes that an APK attempt failed.
+Missing OBBs are a hypothesis; the edition/build, exact files, failing step,
+and runtime compatibility remain unknown. Record those details, Frame Control
+and SteamOS versions, and sanitized server/crash errors before diagnosing it.
+`python3 ui/frame_android.py info /path/to/game.apk` inspects the APK locally.
+Successful installation or fixture tests do not establish RE4 compatibility;
+OBBs cannot fix ABI/API, VrApi/OpenXR, entitlement or Android-service failures.

docs/backup-and-recovery.md

@@ -0,0 +1,187 @@
+# Backup and recovery
+
+**Tools → Backup & recovery** copies what a factory reset would lose from the
+Steam Frame to your computer, puts it back afterwards, and gets the headset out
+of Desktop Mode. It runs from Frame Control on a computer, not from the iPhone
+app or the Frame itself.
+
+**Partly tested on a headset.** On a Frame running SteamOS 0.5.6 (build
+20261015.6141207), a full backup saved 26 parts (40.7 MB): 14 games' Proton
+saves, Linux game saves, Steam and desktop settings and 9 Android apps' data,
+with no sign-in files or keys in the archives. Restoring one game's saves on top
+of identical files wrote nothing and left nothing behind. The session check
+reported Game Mode, so **Return to Game Mode** changed nothing. Not tested on a
+headset: a restore after a real factory reset, a restore that replaces files,
+Android data restore. Unit tests and the fake Frame cover those (see
+[Verification](#verification)).
+On 2026-10-24, the real-device reproduction in [issue #142](https://github.com/saphid/frame-control/issues/142)
+confirmed full Plasma Desktop Mode on the same build: the Plasma session target
+was active and the Game Mode target inactive. Desktop Mode also ran gamescope
+for `steamvr-plasma.service`, so the old process check incorrectly reported
+Game Mode. SteamOS's `steamosctl switch-to-game-mode` restored Game Mode and
+reversed the target states; battery stayed at 99%, and the rollback timer and
+shared lock were cleaned up. After #143 passed CI, the corrected code was
+tested in another full Plasma session under a three-minute rollback timer.
+`ui/frame_backup.py session` reported Desktop Mode despite gamescope, and
+`ui/frame_backup.py game-mode` invoked the same guarded Return function used by
+the button. Game Mode became active and a second call made no switch. Battery
+remained at 99%; the timer and lock were removed. The literal desktop button
+was not clicked in this test, and older SteamOS builds remain fixture-tested.
+
+## Back up
+
+Choose **Game saves**, **Steam and desktop settings** and **Android app data**
+(all three by default), then **Back up now**. **See what's included** lists each
+part and its size first. Backing up only reads the headset.
+
+Each backup is a folder named after the time it started:
+
+```
+~/Documents/Frame Control Backups/2026-10-23-142530/
+  manifest.json
+  saves/saves-1234.tar.gz          one per game
+  saves/saves-linux.tar.gz
+  settings/settings-steam.tar.gz
+  settings/settings-system.tar.gz
+  android/org.example.game.tar.gz  one per Android app
+```
+
+`manifest.json` records the headset's name, SteamOS version and BUILD_ID, every
+file with its size and SHA-256, and each archive's SHA-256. It also lists what
+was skipped and why. A backup is written under a hidden `.…partial` name and
+renamed when complete, so a cut-off backup never shows up as one.
+
+### What's saved
+
+| Part | From the headset (`~` is `/home/steamos`) | Restored? |
+|---|---|---|
+| Windows game saves | `~/.local/share/Steam/steamapps/compatdata/<appid>/pfx/drive_c/users/steamuser/` → `AppData/Roaming`, `AppData/Local`, `AppData/LocalLow`, `Documents`, `Saved Games`. Wine's own folders in them (`Temp`, `Microsoft`, `D3DSCache`, `CrashDumps`) are left out. Sideloaded Windows games (non-Steam shortcuts) have prefixes here too | Yes |
+| Linux game saves | `~/.config/unity3d`, `~/.local/share/godot/app_userdata`: where Unity and Godot games save by default | Yes |
+| Steam controller layouts | `userdata/<account>/241100/remote/controller_config`, `steamapps/common/Steam Controller Configs/<account>/config` | Yes |
+| Steam library settings | `userdata/<account>/config/localconfig.vdf`, `shortcuts.vdf`, `grid/` (custom artwork) | Kept for reference |
+| Desktop settings | `~/.config/kdeglobals`, `kwinrc`, `kxkbrc` (keyboard layout), `konsolerc`, `dolphinrc` | Yes |
+| SteamVR settings | `~/.config/openvr/config/steamvr.vrsettings` | Kept for reference |
+| Android app data | Each Frame Control Android app's private data, through the existing `backup-data` helper ([sidequest.md](sidequest.md#private-app-data-backups)) | Yes |
+
+"Kept for reference" files are in the backup but not put back automatically:
+Steam and SteamVR rewrite them while they run, and an old `shortcuts.vdf` would
+point at apps that aren't installed after a reset. Open the backup folder to
+copy one by hand if you need it.
+
+### What's never copied
+
+- **Steam sign-in:** `steam.token`, `config/config.vdf`, `loginusers.vdf`,
+  `registry.vdf` and `ssfn*` files.
+- **Keys and passwords:** `~/.ssh`, `~/.gnupg`, keyrings and KWallet, any
+  `*.token`, `*.key` or `*.pem` file, Tailscale state and proxy settings
+  (`secrets.env`). These are refused by name wherever they turn up, including
+  inside a game's folder, and a restore refuses them too.
+- Games, Proton and the Steam runtimes: reinstall them from Steam.
+- Steam Cloud's own folders (`userdata/<account>/<appid>`), shader caches and
+  screenshots (**Tools → Capture & Live** saves those to Pictures).
+- Android apps themselves, their OBB files and shared storage (`/sdcard`).
+- Symbolic links (never followed), and single files over 2 GiB.
+
+Backups aren't encrypted. Game folders can still hold a launcher's login, and
+Android app data can hold an app's, so keep backups private.
+
+Android apps that are open are skipped (the helper needs the app closed); close
+them and back up again.
+
+## Restore after a factory reset
+
+1. Set up the headset again: Developer Mode, **Set Up Connection**, sign in to
+   Steam with the same account.
+2. Reinstall your games, and **start each once** so Proton creates its folders.
+3. Reinstall your Android apps from Frame Control.
+4. **Tools → Backup & recovery → Restore…** on a backup. Frame Control checks
+   each part against the headset and says what it would do: how many files it
+   replaces and how many are new.
+5. Tick the parts to restore and **Restore selected**. It asks before replacing
+   anything.
+
+Parts that can't go back yet are skipped, not failed, with the reason:
+
+| Reason | What to do |
+|---|---|
+| Install the game first | Install it from Steam, then restore |
+| Start the game once | Proton hasn't made its folders yet; start the game, quit, restore |
+| Sign in to Steam first | Controller layouts go under your account's folder |
+| Install the app first / close the app first | Android app data needs the app installed and closed |
+| The backup file doesn't match its checksum | The archive changed since it was made |
+
+A restore writes only the files in the parts you chose, and only inside that
+part's folders: it never deletes a file, and a save archive can't write outside
+its game. Before replacing a file it copies the current one to
+`~/.local/share/frame-control/restore-previous/<time>/` on the headset. Files
+already identical are left alone. Android app data goes through the existing
+`restore-data` helper, which keeps the previous data folder beside it.
+
+## Stuck in Desktop Mode
+
+On the Frame, Game Mode is gamescope running Steam, and the Linux desktop
+normally runs *inside* it as one panel (`steamos-nested-desktop`, see
+[how-the-frame-works.md](how-the-frame-works.md#the-layer-cake)). If that panel
+is what you see, you're already in Game Mode: close it from the Steam dashboard.
+
+Full Desktop Mode is a different session. **Check** reads the main user's
+systemd session targets over SSH: `gamescope-session.target` and
+`plasma-workspace-wayland.target`. Game Mode requires the former active and the
+latter inactive; Desktop Mode requires the reverse. This takes precedence over
+process names: full Desktop Mode can run gamescope for its VR overlay, and
+Game Mode can run a nested Plasma panel. Check changes nothing.
+
+Conflicting, transitional, failed or unreadable targets produce **unknown**.
+On older images where both targets are explicitly absent, the fallback accepts
+only gamescope without Plasma/nested desktop as Game Mode, or Plasma without
+gamescope/nested desktop as Desktop Mode. Mixed processes remain unknown.
+The SDDM autologin file is still reported as a login preference; it cannot
+establish which session is running.
+
+After confirmation, **Return to Game Mode** runs exactly
+`steamosctl switch-to-game-mode` when available, or the older
+`holo-session-select gamescope` / `steamos-session-select gamescope` command.
+It closes the desktop and anything open in it. Frame Control never edits the
+SDDM files itself, and runs no switch when the headset is in Game Mode, when
+its mode is unknown, or when no supported switch command is installed. A
+refused command reports an error; a request being sent does not verify that
+the new session has started.
+
+### Manual fallback
+
+If the button can't help, or the headset isn't reachable:
+
+1. **Restart it:** hold Power about 10 seconds until the light goes off, then
+   power on. On the Steam Deck, **Switch to Desktop** starts a one-shot
+   Desktop Mode session, so a restart brings Game Mode back. That the Frame
+   behaves the same is **inferred**, not tested.
+2. **Over SSH** (Developer Mode on), run Valve's switch yourself:
+   `ssh frame steamosctl switch-to-game-mode` (verified on SteamOS 0.5.6).
+   Older images may instead provide `steamos-session-select gamescope` or
+   `holo-session-select gamescope`.
+3. **Boot menu:** hold Power 10 seconds, then power on while holding the AUX
+   button on top of Power. Choose `Current`, or `Previous` to start the other
+   SteamOS slot; both keep your data. Details and the further options
+   (`Repair Steam Installation`, `Erase User Data`, a full re-image) are in
+   [how-the-frame-works.md](how-the-frame-works.md#facts-worth-knowing) and
+   [recovery-and-images.md](recovery-and-images.md). Back up first if you can:
+   `Erase User Data` is a factory reset.
+
+## Verification
+
+`tests/test_backup.py` runs the headset-side script (`ui/frame_backup_remote.py`)
+for real against a folder laid out like the Frame's home, with only SSH faked:
+which paths are picked, that sign-in files and keys never are (also inside game
+folders), links never followed, the manifest and its checksums, restore checks
+after a reset (game not installed, no Proton folders yet, not signed in), that a
+restore replaces only its own files and keeps the old ones, unsafe archives
+(`..`, absolute paths, links, other games' folders) writing nothing, backup
+names that try to leave the backups folder, and the exact Game Mode command.
+`tests/e2e/test_recovery_kit.py` backs up a Proton save from the fake Frame through
+the server, deletes it and restores it. Neither involves a real headset.
+
+Isolated session tests in the same suite reproduce full Plasma plus gamescope,
+Game Mode with and without the nested desktop, conflicting/transitional targets,
+missing targets on older builds, failed/timed-out systemd reads, selector
+compatibility, and the confirmed Return action with SSH mocked. Run them with
+`python3 -m unittest discover -s tests -p test_backup.py -v`.

docs/battery-health.md

@@ -0,0 +1,59 @@
+# Battery and health monitoring
+
+Open **Control Center → Battery & thermal health**, or expand **System
+information**, to read the Frame's charge, charging state, signed battery
+power, battery temperature and driver-reported health. Optional readings show
+charge cycles, full charge capacity, design capacity and full / design capacity.
+The existing battery chip also shows charging state and temperature.
+
+These are read-only readings from the Linux host's `/sys/class/power_supply`,
+not Android's container battery view. The probe prefers the documented Frame
+fuel gauge, `max1720x_bat_7-36`, over other battery nodes, excludes peripheral
+(`scope=Device`) and absent batteries, and otherwise uses a deterministic
+battery fallback. The UI shows the selected source path.
+
+| Reading | Linux attribute | Interpretation |
+|---|---|---|
+| Charge | `capacity` | Integer 0–100 percent; zero is a real reading |
+| Charging state | `status` | Charging, Full, Discharging or Not charging; missing/unknown states stay unavailable |
+| Battery power | `voltage_now × current_now` | Microvolts and microamps converted to signed watts; positive means charging on the Frame |
+| Temperature | `temp` | Tenths of a degree Celsius, including valid negative readings |
+| Battery health | `health` | Driver status such as Good or Overheat; not a wear percentage |
+| Charge cycles | `cycle_count` | Driver-reported count, including zero |
+| Full/design capacity | `charge_full`, `charge_full_design` | Microamp-hours converted to mAh |
+| Full / design capacity | Ratio of those two capacities | Fuel-gauge estimate; not a diagnosis or a guaranteed runtime |
+| Time estimate | `time_to_full_now`, `time_to_empty_now` | Seconds; displayed only for the corresponding charging/discharging state |
+
+Unavailable means the field is absent, unreadable or invalid. One missing
+sensor does not hide the others. Zero design capacity cannot produce a ratio. Time estimates outside 1 second
+to 7 days and battery temperatures outside −273.15 to 200 °C are rejected
+as invalid readings; these bounds are not thermal warning thresholds.
+The ratio may exceed 100% because full capacity is a gauge estimate, so the app
+does not clamp it or invent a wear warning. The app does not estimate health
+from charge percentage or assign temperature thresholds. Existing thermal
+alerts use the kernel's own hot/critical trip points.
+
+A connected charger does not necessarily mean charging: the Frame can still
+drain under load or sit idle near full charge. A 100% capacity reading alone
+does not prove the driver reports Full. Missing status is explicitly unknown;
+near-zero measured battery power with a charger is shown as not charging.
+Failed, stale or disconnected status samples clear Control Center readings.
+
+**No charge controls are provided.** Frame's SteamOS charge-limit backend is
+unsupported; see [charge-limit research](charge-limit.md). Monitoring never
+writes to power supplies, pauses charging, changes current or sets a limit.
+
+## Verification
+
+`tests/test_battery.py` uses temporary sysfs-like files for conversion,
+malformed/missing values, permission failures, source selection and partial
+sensor support. `tests/control_center.cjs` exercises charging states, optional
+metrics and failed/stale/disconnected sample handling. These tests do not
+connect to a headset. On 2026-10-24, the PR's uninstalled parser was also
+piped over SSH to a real Frame running SteamOS 0.5.6 (build
+`20261015.6141207`). Its read-only sysfs result selected
+`max1720x_bat_7-36` and reported 99% charge, Not charging, 24.9 °C,
+Good driver health, 14 cycles, 2,920 mAh full and 2,700 mAh design capacity
+(108.1% fuel-gauge estimate). The Control Center UI was not run against this
+headset; Windows and macOS were not tested. Optional fields are not claimed to
+be available on every firmware build.

docs/changelog.md

@@ -0,0 +1,9 @@
+# Changelog
+
+## Unreleased
+
+- Battery monitoring now selects the Frame fuel gauge predictably, handles
+  missing or invalid readings, and shows optional cycle count, full/design
+  capacity and estimated capacity health in Control Center. Unknown charging
+  status stays explicit. Monitoring is read-only; charge limits remain
+  unsupported on Frame. The read-only parser was checked on a real Frame; the UI was not.

docs/charge-limit.md

@@ -0,0 +1,168 @@
+# Battery charge limit (80%): research
+
+**Question:** can Frame Control set an 80% battery charge limit on the Frame
+over SSH or adb, safely?
+
+**Verdict: don't build it.** Valve's supported mechanism (the one Steam's own
+charge-limit setting uses on the Deck) is not configured for the Frame. The
+only control the Frame has is a vendor charger attribute that Valve's own
+charging daemon also manages. Research as of 2026-10-23, confirmed with the
+read-only checks below on a Frame running SteamOS 0.5.6 (build 20261015.6141207):
+
+- `steamosctl get-max-charge-level` fails with `UnknownInterface: ...BatteryChargeLimit1`.
+- `/usr/share/steamos-manager/devices/` has `[battery_charge_limit]` only for
+  the Steam Deck, ROG Ally, ROG Xbox Ally and MSI Claw, not the Frame.
+- Power supplies: `max1720x_bat_7-36` (Battery, driver `max1720x`),
+  `pm8550b-charger` (driver `qcom,pm8550b-charger`) and the USB-C `tcpm-source-psy-…`.
+  No `charge_control_end_threshold` anywhere; `pm8550b-charger` has
+  `charging_enable` and `charging_pause`, both `root`-only (`-rw-r--r--`).
+- `deckard-charger.service` (Deckard Battery Charger service) is enabled and running.
+
+For safe read-only readings in Control Center, see [battery and health
+monitoring](battery-health.md). It does not provide charging controls.
+
+## How Steam does it on other devices
+
+- Steam's **Settings → Power → Battery Charge Limit** shipped to the Deck in
+  SteamOS 3.7.8 (beta client 2025-05-08)
+  ([GamingOnLinux](https://www.gamingonlinux.com/2025/05/steamos-3-7-7-beta-brings-a-battery-charge-limit-option-and-improved-lenovo-legion-go-s-support/)).
+- Steam calls SteamOS Manager on the session bus:
+  `com.steampowered.SteamOSManager1.BatteryChargeLimit1`, with properties
+  `MaxChargeLevel` (`i`, read/write; `-1` resets to the default) and
+  `SuggestedMinimumLimit` (`i`, read-only). The CLI is
+  `steamosctl get-max-charge-level` / `set-max-charge-level` /
+  `suggested-minimum-charge-limit`. Source: `data/interfaces/com.steampowered.SteamOSManager1.xml`
+  and `steamos-manager/src/bin/steamosctl.rs` in
+  [holo/steamos-manager](https://gitlab.steamos.cloud/holo/steamos-manager),
+  read at commit `83981ab` (2026-10-21).
+- The root daemon writes the value to sysfs only if the device's TOML in
+  `data/devices/` has a `[battery_charge_limit]` section. Two methods exist
+  (`steamos-manager/src/power.rs`, `BatteryChargeLimitMethod`):
+  - `hwmon_attribute`: the Deck writes `max_battery_charge_level` on
+    `steamdeck_hwmon` (`data/devices/steam-deck.toml`).
+  - `acpi_sb`: ROG Ally, MSI Claw and others write the standard
+    `charge_control_end_threshold` on the ACPI battery
+    (`/sys/bus/{platform,acpi}/drivers/…battery…/PNP0C0A:00/…/power_supply/*/`).
+    On ARM there's no ACPI, so this path can't match there either.
+- With no `[battery_charge_limit]` section, the interface fails with
+  `UnknownInterface` (Steam can still show its toggle on unsupported hardware:
+  [steam-for-linux#12044](https://github.com/ValveSoftware/steam-for-linux/issues/12044)).
+
+## What the Frame has
+
+- **Upstream `data/devices/steam-frame.toml`** (matched by
+  `dt.compatible = "qcom,sm8650"`, variant `Deckard`) configures GPU clocks
+  and performance profiles only. It has **no `[battery_charge_limit]`**, so
+  SteamOS Manager on the Frame has no charge-limit backend. Its git history
+  (2026-09-10 to 2026-10-12) never added one.
+- **Battery driver:** the Frame's battery is
+  `/sys/class/power_supply/max1720x_bat_7-36`, and the charger is a
+  `tcpm-source-psy-…` USB-PD supply ([how-the-frame-works.md](how-the-frame-works.md)).
+  Both were verified 2026-09-25, and `ui/frame_status.py` `battery()` and
+  `power_source()` read them. The Maxim MAX1720x is a **fuel gauge** and
+  can't control charging. Mainline `drivers/power/supply/max1720x_battery.c`
+  exposes only read-only properties (capacity, voltage, current, temp,
+  charge_full…), with no `charge_control_end_threshold`. Valve's build is
+  patched: it reports `time_to_full_now`, which mainline doesn't have. Even
+  so, a charge stop would have to come from the separate charger IC, not this
+  node.
+- **Not the qcom_battmgr path.** Some other SM8650/SM8750 handhelds get
+  `charge_control_end_threshold` from Qualcomm's `qcom_battmgr`
+  (pmic_glink) driver, clamped at 55% or above. A third-party distro enabled
+  Steam's limit on those by patching steamos-manager
+  ([armada-os/armada#758](https://github.com/armada-os/armada/pull/758)). The
+  Frame's battery isn't exposed by `qcom_battmgr`, so that doesn't carry over.
+  (Unverified: whether a `qcom_battmgr` node also exists on the Frame. The
+  read-only checks below answer this.)
+- **What third parties found:**
+  [y0usaf/frame-charge](https://github.com/y0usaf/frame-charge) reports that
+  the Frame has no `charge_control_end_threshold` and falls back to a vendor
+  `charging_pause` attribute. It also reports that `constant_charge_current`
+  changes on its own, which it attributes to Valve's `deckard_charge_daemon`
+  (`deckard-charger.service`). By its own README, that tool has only run its
+  read-only `status` on a Frame and has **not** been tested against real
+  charging. Two questions are still open: whether pausing stops the current,
+  and whether Valve's daemon undoes it.
+
+## Why not build it now
+
+- **No supported endpoint.** The only Valve-supported interface,
+  `BatteryChargeLimit1`, isn't backed on the Frame. Writing sysfs ourselves
+  would bypass Steam and SteamOS Manager, and it needs root (`sudo -S` with
+  the user's password).
+- **A rival owner.** Valve's charge daemon already adjusts charging
+  parameters. Toggling `charging_pause` underneath it could be undone without
+  warning, fight it in a loop, or leave charging paused.
+- **Stuck at a low charge.** If the app or the Frame dies while charging is
+  paused, the Frame could sit at a low charge on the charger. Whether a
+  reboot clears `charging_pause` is unknown.
+- **The UI would mislead.** Steam's setting (if it shows at all) wouldn't
+  reflect our limit.
+- **adb doesn't help.** Wi-Fi adb (`frame:5555`) reaches the Lepton Android
+  container only. USB-C adb reaches the Linux side as `steamos` (non-root, the
+  same as SSH, [ssh.md](ssh.md)). Neither adds a charging-control route.
+  Android's `dumpsys battery` in Lepton is a container view, not the hardware.
+
+**Revisit when** a SteamOS update adds `[battery_charge_limit]` to
+`steam-frame.toml` (or `steamosctl get-max-charge-level` stops returning
+`UnknownInterface` on the Frame). Then the feature is just a SteamOS Manager
+call:
+
+- Read: `steamosctl get-max-charge-level`
+- Set: `steamosctl set-max-charge-level 80`
+- Undo: `steamosctl set-max-charge-level -- -1`
+
+That runs as `steamos` with no sudo. It's the same value Steam's own
+Settings → Power shows, so both stay in sync.
+
+## Headset checks (read-only first)
+
+Run these over SSH as `steamos`. Steps 1–4 only read.
+
+```sh
+# 1. Does SteamOS Manager offer the interface on this build?
+steamosctl get-max-charge-level; steamosctl suggested-minimum-charge-limit
+busctl --user introspect com.steampowered.SteamOSManager1 \
+  /com/steampowered/SteamOSManager1 | grep -i -A3 ChargeLimit
+grep -n battery_charge_limit /usr/share/steamos-manager/devices/*frame* 2>/dev/null
+
+# 2. Which power supplies exist, and which drivers back them?
+for d in /sys/class/power_supply/*; do
+  echo "== $d ($(cat $d/type)) driver=$(basename "$(readlink -f $d/device/driver)" 2>/dev/null)"
+  ls $d
+done
+
+# 3. Any charge-control attributes, with their values and permissions?
+ls -l /sys/class/power_supply/*/{charge_control_*,charging_pause,charging_enable,constant_charge_current*,charge_behaviour} 2>/dev/null
+grep -H . /sys/class/power_supply/*/{charge_control_*,charging_pause,charging_enable,constant_charge_current*,charge_behaviour} 2>/dev/null
+
+# 4. What is Valve's charger daemon, and what does it touch?
+systemctl status deckard-charger.service --no-pager
+systemctl cat deckard-charger.service
+journalctl -b -u deckard-charger.service --no-pager | tail -50
+```
+
+If step 1 succeeds on some build, test `steamosctl set-max-charge-level 80`
+on a charger at a charge above 80%. Watch `current_now` on the
+`max1720x_bat_*` node fall to about 0, then `steamosctl set-max-charge-level -- -1` and
+confirm charging resumes. Do this on a supervised Frame only. If only step 3
+finds a vendor attribute, **stop**: don't write it, and leave the question
+with Valve.
+
+## Sources
+
+- steamos-manager source, commit `83981ab` (2026-10-21):
+  `data/devices/steam-frame.toml`, `data/devices/steam-deck.toml`,
+  `data/interfaces/com.steampowered.SteamOSManager1.xml`,
+  `steamos-manager/src/power.rs`, `steamos-manager/src/manager/user.rs`.
+  [gitlab.steamos.cloud/holo/steamos-manager](https://gitlab.steamos.cloud/holo/steamos-manager)
+- Mainline [`max1720x_battery.c`](https://github.com/torvalds/linux/blob/master/drivers/power/supply/max1720x_battery.c)
+- [ValveSoftware/steam-for-linux#12044](https://github.com/ValveSoftware/steam-for-linux/issues/12044):
+  the Steam toggle shows on unsupported hardware
+- [armada-os/armada#758](https://github.com/armada-os/armada/pull/758):
+  `qcom_battmgr` threshold on other SM8650/SM8750 devices
+- [y0usaf/frame-charge](https://github.com/y0usaf/frame-charge): third-party,
+  untested on real charging
+- [GamingOnLinux: SteamOS 3.7.7 beta charge limit](https://www.gamingonlinux.com/2025/05/steamos-3-7-7-beta-brings-a-battery-charge-limit-option-and-improved-lenovo-legion-go-s-support/)
+- Repo: [how-the-frame-works.md](how-the-frame-works.md) (battery and
+  charger nodes), [ssh.md](ssh.md) (adb scope), `ui/frame_status.py`

docs/devices.md

@@ -97,6 +97,12 @@ The app rereads the gateway every 5 seconds and Tailscale's state every
 
 ## The connection, stage by stage
 
+When a connection fails, the header pill keeps its compact offline state and
+retry countdown; its tooltip and connection dialog contain the full reason.
+Devices shows a short reason in the headset row (with the full reason in its
+tooltip) and a wrapping recovery explanation in the selected headset's details.
+**Use this headset** also selects that headset's details.
+
 The connector runs in the server (`frame_link.Link`) and moves through:
 
 1. **Checking this computer's network**: gateway, Wi-Fi, this computer's IP, Tailscale.

docs/evidence/clip-gui-export-2026-10-24.json

@@ -0,0 +1,38 @@
+{
+  "date_utc": "2026-10-24T07:54:37Z",
+  "frame_control_tag": "v0.4.16",
+  "steamos_version": "0.5.6",
+  "steamos_build": "20261015.6141207",
+  "host": "lxso2",
+  "interface": "source UI served by a temporary private Frame Control server, opened in T3 Code's desktop browser",
+  "action": "Clicked the visible Export button for Steam's retained real saved clip in Capture & Live",
+  "clip_id": "10230640/clips/clip_13009719723623972864_20261024_072115",
+  "api_observed": {
+    "post_clips_export_http": 200,
+    "get_job_http": 200,
+    "get_clips_http": 200
+  },
+  "ui_result": "Saved clip_13009719723623972864_20261024_072115.mp4 to ~/Videos/SteamFrame; button changed to Export again",
+  "output": {
+    "path": "~/Videos/SteamFrame/clip_13009719723623972864_20261024_072115.mp4",
+    "bytes": 159829,
+    "sha256": "f8a476eefb2bde7ba5cb464632ec9b952eea3ab1610b5bed2098bf1f11d62cf1",
+    "matches_previously_fully_decoded_export": true,
+    "duration_seconds": 10.288532,
+    "video": "H.264 1920x1080",
+    "audio": "AAC stereo"
+  },
+  "cleanup": {
+    "temporary_server_stopped": true,
+    "shared_device_lock_released": true,
+    "battery_percent_after": 99,
+    "desktop_mode_active_after": false,
+    "test_title_created": false,
+    "steam_source_clip_retained": true
+  },
+  "limits": [
+    "The test used the source UI, not a packaged desktop installer.",
+    "The retained source clip was nearly black; visible gameplay capture remains unverified.",
+    "Perceptual audio/video sync, long clips, trims and automatic copying were not tested."
+  ]
+}

docs/evidence/desktop-battery-comfort-2026-10-24.json

@@ -0,0 +1,95 @@
+{
+  "date": "2026-10-24",
+  "command": "scripts/frame-power-sample.sh --count 2 --interval 1",
+  "exitCode": 0,
+  "stopped": null,
+  "lockPolicy": "Existing sampler checked local and remote /tmp/frame-test.lock before reading; no lock acquired, bypassed or removed. Read-only run only.",
+  "samples": [
+    {
+      "time": 1792828506.4317346,
+      "osBuild": "20261015.6141207",
+      "elapsedSeconds": 0.057539,
+      "battery": {
+        "battery.percent": {
+          "value": 99,
+          "unit": "%",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.status": {
+          "value": "Not charging",
+          "unit": "state",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.watts": {
+          "value": -0.06,
+          "unit": "W",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.tempC": {
+          "value": 24.0,
+          "unit": "C",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        }
+      }
+    },
+    {
+      "time": 1792828507.4357972,
+      "osBuild": "20261015.6141207",
+      "elapsedSeconds": 1.061612,
+      "battery": {
+        "battery.percent": {
+          "value": 99,
+          "unit": "%",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.status": {
+          "value": "Not charging",
+          "unit": "state",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.watts": {
+          "value": -0.05,
+          "unit": "W",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        },
+        "battery.tempC": {
+          "value": 24.0,
+          "unit": "C",
+          "source": "/sys/class/power_supply/max1720x_bat_7-36",
+          "state": "available"
+        }
+      }
+    }
+  ],
+  "limitations": [
+    "No real low-charge or thermal condition induced.",
+    "No native notification delivery verified.",
+    "No worn-headset or native package tests.",
+    "Read-only parser/transport check; no background monitor or power-saving claim."
+  ],
+  "browserCheck": {
+    "page": "Production ui/index.html served statically; API calls intentionally unavailable",
+    "viewport": {
+      "width": 1280,
+      "height": 800
+    },
+    "bridge": "Synthetic desktop notification bridge; no native OS notification sent",
+    "result": "Initially unchecked and visible only after desktop host/bridge setup. Checkbox enabled through browser. Synthetic 12%, Discharging, -4 W samples at 0/30/60 seconds produced one bridge request, an in-page status and a toast. No horizontal overflow.",
+    "apiLimit": "Static server returned expected 404/501 API errors; not an end-to-end live desktop connection test."
+  },
+  "offlineValidation": [
+    "test_desktop_battery_comfort.py: 2 tests, production JS with monotonic fake clock and notification bridge",
+    "test_comfort*.py: 25 tests",
+    "test_battery.py: 7 tests",
+    "test_power*.py: 36 tests (loopback HTTP test run outside socket-restricted sandbox)",
+    "test_ui_workspace.py: 1 Python wrapper / Node workspace suite",
+    "test_ui_review.py: 1 Python wrapper / 9 Node regression tests, including switch reset and retained cooldown"
+  ]
+}

docs/evidence/panel-discovery-2026-10-24.md

@@ -0,0 +1,65 @@
+# Panel discovery investigation, 2026-10-24
+
+Base: v0.4.16 (`040581a`). Scope: issue #73, Desktop Capture and Control.
+
+## Evidence and change
+
+Issue #73 reports SteamOS 0.4.5 with its desktop visibly running, without a
+Frame Control version or steps. The maintainer's 2026-10-12 comment identifies
+the duplicate `loadPanels` UI function fixed in 0.4.3 and requests the exact
+remaining message and SteamOS build if it persists. There is no reporter
+follow-up. At this base, the functions are distinct and the existing Node
+regression checks their uniqueness and the Desktop GET request.
+
+Read-only source inspection found a remaining diagnostic ambiguity:
+`read_props()` returns `{}` for failed/timed-out X queries and missing root
+properties. `panels()` treated that like a confirmed empty focusable-window
+list. With no detected Plasma process it claimed no panel was open; with Plasma
+it claimed SteamOS was not listing the desktop. Neither claim follows from an
+unreadable list.
+
+The change checks for the presence of `GAMESCOPE_FOCUSABLE_WINDOWS` before
+those claims. An absent list now reports unknown panel state, suggests checking
+SteamVR and retrying/Headset view, and asks for the exact message and SteamOS
+version if persistent. Missing-tool and whole-run deadline explanations retain
+precedence. No new probes, retries, timeouts, input or capture routes are added.
+
+## Real-device boundary
+
+A preliminary read-only SSH inspection returned SteamOS 0.5.6, BUILD_ID
+`20261015.6141207`, battery 99%, discharging, and X0/X1 socket names. It made
+no headset changes. The shared lock was absent at that moment.
+
+The subsequent atomic `mkdir /tmp/frame-test.lock` failed with `File exists`.
+The guarded command exited with status 3 before the session, X-property or
+panel-helper probes ran. The other task's lock was left alone. No application
+was installed, started, stopped or focused; no headset settings changed.
+
+That implementation probe was blocked by the occupied shared device. The
+coordinator later supplied a separate narrow read-only observation on SteamOS
+0.5.6, BUILD_ID `20261015.6141207`, at battery 99%, with the shared lock absent
+and both `xprop` and `xwininfo` installed:
+
+- In **Game Mode**, `DISPLAY=:0 xprop -root GAMESCOPE_FOCUSABLE_WINDOWS
+  GAMESCOPE_FOCUSED_WINDOW` returned both properties **present but empty**.
+- On `DISPLAY=:1`, both properties were reported **not found**.
+
+This observation distinguishes a confirmed empty list on `:0` from absent
+properties on `:1`. It does **not** reproduce #73's Desktop Mode report on
+SteamOS 0.4.5, and it does **not** test this PR's code on the headset. It is a
+coordinator-supplied observation, separate from the blocked implementation probe
+above; no new headset probe was run for this follow-up.
+
+Remaining limit: there is no reproduction establishing a further
+capture/discovery fix for the reported Desktop Mode/build combination. This PR
+improves a demonstrated diagnostic error; it must not close #73 as a verified
+new capture fix.
+
+## Offline verification
+
+Focused Python regressions distinguish absent, focus-only, failed/timed-out X
+queries, confirmed empty and desktop-running lists. Existing tests cover
+missing tools, alternate displays, successful discovery and the 12-second
+deadline. The production page's Node behavior test verifies that both Capture
+and Control preserve the unreadable-list advice. These use fake X/HTTP/DOM
+boundaries and do not prove real SteamOS 0.4.5 capture or physical input.

docs/evidence/power-desktop-2026-10-24.json

@@ -0,0 +1,36 @@
+{
+  "date": "2026-10-24",
+  "base": "c7489a8 (v0.4.14)",
+  "feature": "Desktop Tools power and heat observations",
+  "automated": {
+    "targeted": "python3 -m unittest discover -s tests -p 'test_power*.py': 35 passed",
+    "uiAndResourceGuard": "node --test tests/power_desktop.cjs: 7 passed",
+    "desktopApp": "node --test app/test/*.test.js: 37 passed",
+    "packaging": "Materialized ui/scripts resources selected by app/package.json; isolated Python -I imported frame_power, constructed remote payload including frame_status, and read idle status. Missing resource detection tested. Shared phone bundle import passed.",
+    "syntax": "Python compilation, sampler shell syntax and git diff --check passed",
+    "fullSuite": "python3 -m unittest discover -s tests -v: 1363 tests, OK (skipped=15), 153.274 seconds",
+    "transientFailure": "An earlier full run had one nested sandbox-test failure: the existing OneServer second-server child exited -11 (SIGSEGV), expected 1. Isolated sandbox rerun passed (6 tests), then the complete suite passed. No unrelated server-lifecycle code was changed."
+  },
+  "browser": {
+    "environment": "T3 collaborative Chromium preview, Linux, local Python Handler server; synthetic observation subprocess at accelerated one-second intervals; normal headset SSH disabled during start/stop/download verification",
+    "observations": [
+      "Opened #powerReport and verified labeled duration selector, disabled Stop/downloads before start and accessible sample progress.",
+      "Started a synthetic observation and observed 11 of 12 samples in progress; completion allowed another start.",
+      "Started again, observed progress, stopped, and saw 7 of 12 samples retained with explicit incomplete state and original frame alias.",
+      "Clicked HTML download and saw the UI acknowledge the request; T3's download list did not record the blob download, so filesystem save was not verified.",
+      "Fetched all three authenticated export endpoints in the browser: HTML 200 (7599 characters), JSON 200 (2618 characters, 7 samples), CSV 200 (977 characters); each retained the stop reason."
+    ]
+  },
+  "realFrame": {
+    "lock": "ssh frame 'mkdir /tmp/frame-test.lock' succeeded before real-device probe; this task removed only that owned empty lock with rmdir after verification",
+    "probe": "Ran the production desktop Observation using strict, batch SSH to frame. The first attempt exposed a missing structured reason on early remote lock refusal; fixed and reran successfully.",
+    "result": "0 of 12 samples; running=false; stopped='Smoke session active (/tmp/frame-test.lock); no sensors read'. Exported HTML included the same incomplete reason.",
+    "scope": "Lock refusal only. No successful real sensor session, installation, app launch/stop, power control or thermal control was performed for this feature."
+  },
+  "limitations": [
+    "Native Electron installers were not built or launched; resource staging and build-hook contracts were tested.",
+    "One latest report is retained only in server memory. Starting again, restarting the server or quitting discards it; the UI warns users to download first.",
+    "Stopping ends only the owned local SSH process. The bounded remote reader discovers closure on its next write; immediate remote cancellation is not guaranteed.",
+    "Phone-hosted observation starts are unsupported; the shared server bundle still imports without desktop sampler resources."
+  ]
+}

docs/evidence/power-export-2026-10-24.json

@@ -0,0 +1,34 @@
+{
+  "date": "2026-10-24",
+  "scope": "Read-only three-sample HTML export and browser download check; no installs, app launches, or remote process-control commands",
+  "preflight": {
+    "smokeLock": "absent",
+    "version": "0.5.6",
+    "build": "20261015.6141207"
+  },
+  "command": "scripts/frame-power-sample.sh --count 3 --interval 1 --html /tmp/frame-power-export-check.html",
+  "exitCode": 0,
+  "sampleCount": 3,
+  "metricCount": 91,
+  "unavailableGroups": [
+    "proximity"
+  ],
+  "browser": {
+    "engine": "T3 collaborative Chromium preview",
+    "widths": [
+      1280,
+      390
+    ],
+    "jsonDownloadMatches": true,
+    "csvDownloadMatches": true,
+    "csvDataRows": 276,
+    "pageScripts": 0,
+    "horizontalOverflow": "confined to focusable table region"
+  },
+  "limits": [
+    "No real-device Ctrl+C cancellation test; local child termination and retained samples verified with subprocess fixtures",
+    "No screen-reader, Windows or macOS verification",
+    "No controlled baseline, load or worn-headset testing",
+    "Sensor accuracy not established"
+  ]
+}

docs/evidence/power-sampler-2026-10-24.json

@@ -0,0 +1,149 @@
+{
+  "date": "2026-10-24",
+  "osVersion": "0.5.6",
+  "osBuild": "20261015.6141207",
+  "commands": [
+    "scripts/frame-power-sample.sh --count 3 --interval 1",
+    "scripts/frame-power-sample.sh --count 1 --csv"
+  ],
+  "jsonSampleCount": 3,
+  "elapsedSeconds": [
+    0.078011,
+    1.088542,
+    2.107291
+  ],
+  "stopped": null,
+  "unavailableGroups": [
+    [
+      "proximity"
+    ],
+    [
+      "proximity"
+    ],
+    [
+      "proximity"
+    ]
+  ],
+  "selectedSummary": {
+    "battery.percent": {
+      "unit": "%",
+      "sources": [
+        "/sys/class/power_supply/max1720x_bat_7-36"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": 99,
+      "max": 99,
+      "mean": 99.0,
+      "first": 99,
+      "last": 99
+    },
+    "battery.status": {
+      "unit": "state",
+      "sources": [
+        "/sys/class/power_supply/max1720x_bat_7-36"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "states": [
+        "Not charging"
+      ]
+    },
+    "battery.tempC": {
+      "unit": "C",
+      "sources": [
+        "/sys/class/power_supply/max1720x_bat_7-36"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": 26.400000000000002,
+      "max": 26.400000000000002,
+      "mean": 26.4,
+      "first": 26.400000000000002,
+      "last": 26.400000000000002
+    },
+    "battery.watts": {
+      "unit": "W",
+      "sources": [
+        "/sys/class/power_supply/max1720x_bat_7-36"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": -0.12,
+      "max": -0.02,
+      "mean": -0.07,
+      "first": -0.02,
+      "last": -0.07
+    },
+    "cpu.percent": {
+      "unit": "%",
+      "sources": [
+        "/proc/stat"
+      ],
+      "available": 2,
+      "unavailable": 1,
+      "min": 8.7,
+      "max": 11.0,
+      "mean": 9.85,
+      "first": 11.0,
+      "last": 8.7
+    },
+    "fan.pwmRaw": {
+      "unit": "raw",
+      "sources": [
+        "/sys/class/hwmon/hwmon50/pwm1"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": 41,
+      "max": 41,
+      "mean": 41.0,
+      "first": 41,
+      "last": 41
+    },
+    "fan.slg4ax46073v.fan1_input": {
+      "unit": "RPM",
+      "sources": [
+        "/sys/class/hwmon/hwmon50/fan1_input"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": 8624,
+      "max": 8638,
+      "mean": 8628.666667,
+      "first": 8638,
+      "last": 8624
+    },
+    "proximity.raw": {
+      "unit": "raw",
+      "sources": [
+        "/sys/bus/iio/devices/iio:device2/in_proximity_raw"
+      ],
+      "available": 0,
+      "unavailable": 3,
+      "states": []
+    },
+    "rail.max34417_9_10.vph.power1": {
+      "unit": "W",
+      "sources": [
+        "/sys/class/hwmon/hwmon53/power1_input"
+      ],
+      "available": 3,
+      "unavailable": 0,
+      "min": 4.656299,
+      "max": 4.804066,
+      "mean": 4.705555,
+      "first": 4.656299,
+      "last": 4.804066
+    }
+  },
+  "csvRows": 92,
+  "csvSummaryMetrics": 91,
+  "csvHasExplicitUnavailable": true,
+  "limits": [
+    "Read-only short transport/parser check; no controlled baseline or worn/load/battery experiment.",
+    "Proximity unavailable; numeric thermistors are not proof of sensor accuracy.",
+    "No settings, services, device files or application state changed; no remote installation.",
+    "No smoke lock at preflight or sampler checks; advisory checks cannot exclude a concurrent lock appearing during a read."
+  ]
+}

docs/evidence/windows-vm-2026-10-24.md

@@ -0,0 +1,151 @@
+# Windows VM and real Frame test, 2026-10-24
+
+The v0.4.10 installer could enumerate windows/screens and encode a synthetic
+Media Foundation stream, but every desktop capture failed at pipeline parsing:
+`no property "capture-api" in element "d3d11screencapturesrc"`.
+MSYS2's GStreamer 1.28.8 package disables WGC. After the fix, the same installed
+bundle captured the actual Windows desktop with Desktop Duplication and sent
+H.264 to a real Frame: 219 sent frame records, 215 decoded and drawn before the
+snapshot. Individual windows are explicitly unavailable with this bundle.
+
+The base was `e9cbb8fd5555f5cfceeba1babadf2d7d35dcd3be` (`v0.4.10`, origin/main,
+including merged #121), in isolated branch `t3/test-windows-vm-headset`.
+
+## Evidence
+
+- [Capture before the fix](windows-vm-2026-10-24/capture-before.json): five
+  synthetic H.264 frames and five JPEG frames; zero desktop/window frames,
+  with the missing-property error for both codecs.
+- [Actual bundled properties](windows-vm-2026-10-24/plugin-properties.json):
+  `monitor-handle` exists; `capture-api`, `window-handle`, `show-border` do not.
+  [MSYS2 package build](https://github.com/msys2/MINGW-packages/blob/master/mingw-w64-gst-plugins-bad/PKGBUILD)
+  sets `-Dd3d11-wgc=disabled`. Upstream
+  [installs those properties conditionally](https://github.com/GStreamer/gstreamer/blob/main/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11screencapturesrc.cpp).
+- [Capture after the fix](windows-vm-2026-10-24/capture-after.json): the real
+  display produces five H.264 and five JPEG frames. Window sources are hidden
+  with an explicit reason, and the display selects `capture_api=dxgi`.
+- [Raw locked headset session](windows-vm-2026-10-24/headset-session.json):
+  Windows helper, Media Foundation encoder, reverse SSH tunnel, production
+  panel launcher and shared viewer. The image below was captured from that
+  viewer's own X window on the Frame, rather than the VM's console.
+- [Windows tests](windows-vm-2026-10-24/windows-tests.txt) and
+  [guest system details](windows-vm-2026-10-24/windows-system.txt).
+
+![Windows VM desktop decoded in the Frame's own viewer](windows-vm-2026-10-24/headset-view.png)
+
+## Host and VM prerequisites
+
+lxso2: Intel Core i7-8700, 12 logical CPUs, VT-x/KVM; Docker 29.1.3 and Compose
+2.40.3. Before starting: 31 GiB RAM, 15 GiB available; 147 GiB free disk.
+Swap was already full. No other VM or service workload was started or stopped.
+Docker listed no Windows VM, and ports 2222/8006/13389 were unused.
+
+The execution sandbox hid KVM and denied Docker/network access. Checks outside
+it found `/dev/kvm`, `/dev/net/tun` and the Docker daemon. Direct user access to
+KVM was denied, but a disposable Docker container with `--device /dev/kvm`
+opened it successfully; no host permissions changed.
+
+Created only `frame-winvm-priority3`, labelled
+`frame-control.task=priority3-windows-test`: 4 vCPUs, 8 GiB guest RAM, 32 GiB
+growable disk, no restart, 150-second stop timeout. SSH 2222 and console 8006
+bind only 127.0.0.1; RDP is unpublished. No GPU passthrough. Image:
+`dockurr/windows@sha256:16fd7c39a3e48bb946d29c59dc6015942e5b900a1fa5d7e5552053bfc48ee2ea`
+(Windows for Docker v6.06, QEMU v11.1.1).
+
+The container downloaded Windows 11 from Microsoft, with no activation changes.
+It took about 16 minutes to reach the first desktop. Guest build 26200.8037,
+Red Hat VirtIO GPU DOD driver 100.103.104.30200. The old WindowsProductName
+registry field still says Windows 10 Pro; the actual desktop/setup is Windows
+11. After installing the app, the 32 GiB disk had about 9.3 GB free.
+
+Official `Frame-Control-Setup-x64.exe` v0.4.10 SHA-256:
+`30165bc5aa39f941cacc697d195dc5c30b01ad0b9ffb472da8a18a5220549202`.
+Its installer exited 0. The VM stream used an intermediate Python/UI-only
+fix with the released DLL bundle and bundled Python 3.12.14. A later CI failure
+showed that probing GStreamer through a separately loaded DLL could see a
+different, uninitialized instance. The final fix probes optional properties
+through the capture DLL itself. Windows CI checks that native change; the VM
+stream was not repeated with the final DLL.
+
+OEM setup added OpenSSH Server, PowerShell and a dedicated public login key;
+password authentication is disabled. Its config needed an explicit
+`AuthorizedKeysFile C:/ProgramData/ssh/administrators_authorized_keys` before
+key login worked. The default informational share was replaced with a private
+writable staging share inside this container. These were test-VM setup steps,
+not app defects. Host setup files and the stopped VM disk are retained under
+`/tmp/frame-winvm-priority3/`; no private keys are committed or printed.
+The Frame test key was generated inside Windows and its private key stayed
+there. Only its public key was temporarily authorized on the Frame. After
+testing, the guest key and scheduled task were removed; `docker stop -t 150`
+shut down the dedicated VM. Inspection confirmed `exited`, restart `no`
+(container exit 143; logs show the ACPI shutdown signal, waiting for Windows,
+and `Shutdown completed!`). The disk is retained
+for reuse; the VM is not running.
+
+## Checks
+
+- Baseline PC-focused suite: 24 tests passed, one native class skipped.
+- After fix: full Linux unittest suite **1260 tests, OK, 15 skipped**, 144.366 s;
+  focused final PC suite **27 tests, OK, one native class skipped**. The C
+  controller's frozen 600-state trace ran on Linux.
+- Actual Windows installer bundle with the intermediate Python/UI fix:
+  **33 tests, OK, four skipped** (no C compiler, Linux PipeWire test, two
+  CI-only x264 tests). Its GObject property probe, host/encoder check and
+  x264-absence check ran. The final native probe is checked in the PR's
+  Windows CI build, not by this VM run.
+- Browser check with the real production HTML/JavaScript and mocked Windows API
+  responses: DXGI whole-screen Show remains available, the limitation appears
+  once, WGC window sources retain Show, off hides controls, and the limitation
+  text is escaped. This used a static asset server, without headset API access.
+- `node --test app/test/*.test.js`: passed, three test files.
+- `node --test site/test/*.test.mjs`: passed, one test file.
+- The first full Linux run inside the sandbox failed (11 failures, 139 errors),
+  including loopback socket `PermissionError`. The successful full runs were
+  outside that socket restriction.
+- An initial guest test archive omitted `apk-catalog`, causing one import
+  error; the complete archive produced the 33-test passing Windows run.
+
+Raw local logs: `/tmp/frame-windows-{pc,app,site}-tests.log`,
+`/tmp/frame-windows-full-tests-unrestricted.log`,
+`/tmp/frame-windows-full-fixed-tests.log`, and
+`/tmp/frame-winvm-priority3/`. The committed artifacts above preserve the
+capture, Windows test and headset evidence independently of those local files.
+
+## Shared Frame session and cleanup
+
+Read-only checks first: SteamOS 0.5.6, BUILD_ID `20261015.6141207`, battery 99%,
+Not charging (another supply reports Full). The lock was free.
+
+Both attempts acquired `/tmp/frame-test.lock` atomically before any key or
+viewer changes, and removed only the lock acquired by this task. The first,
+35-second attempt failed because the test wrapper sent CRLF script input and
+left SSH stdin open. Production already sends script bytes and closes stdin;
+correcting the wrapper resolved both. Its key was removed and lock released.
+
+The successful session held the lock **03:09:36–03:10:05 UTC (29 seconds)**.
+It used a dedicated `pc-view-priority3` profile and port range 47960–47964,
+leaving existing viewers/profiles alone. The app's Windows `PCView` captured
+`display:65537`, 1280×800, Light preset (30 fps ceiling), and opened panel
+`valve.steam.desktopgame.2001396898`. The viewer reported H.264 software decode,
+218 received frames, 215 decoded/drawn before the snapshot (219 sent records).
+
+This mostly idle, roughly ten-second sample reported 19 fps and content delay
+p50/p95 51.6/75.2 ms. These are observations, not a performance-target pass.
+
+Cleanup stopped the helper and tunnel, closed the own viewer, removed its two
+possible profile paths and log, then removed the exact public-key line. The
+`authorized_keys` SHA-256 was identical before/after. A follow-up login from
+Windows with that key failed with exit 255. Separate checks found no task-owned
+viewer processes, the profile absent, and the shared lock released. Battery
+remained 99%; the sampled gamescope focus properties matched before/after.
+No reboot, global settings changes, game launch or Steam/SteamVR stop occurred.
+
+## Limits
+
+This verifies a Windows VM's desktop capture, Media Foundation encoding and
+real Frame viewer decode/rendering. It does not verify physical-PC hardware
+encoding, WGC or individual-window capture, mixed DPI, multiple displays,
+physical laser alignment/clicks, keyboard layouts, resize/minimise, busy-scene
+performance, bitrate/encoder restarts, or worn-headset comfort. No input was
+injected during the real Frame session. The installed app’s Tools navigation was not exercised; its streaming
+controller, tunnel and viewer were exercised directly. No independent review was performed.

docs/evidence/windows-vm-2026-10-24/capture-after.json

@@ -0,0 +1,53 @@
+{
+  "python": "3.12.14 (main, Sep 24 2026, 17:57:31) [MSC v.1944 64 bit (AMD64)]",
+  "resources": "C:\\Users\\frame\\AppData\\Local\\Programs\\Frame Control\\resources",
+  "elements": {
+    "d3d11screencapturesrc": true,
+    "mfh264enc": true,
+    "jpegenc": true,
+    "x264enc": false
+  },
+  "windowCaptureReason": "Individual windows are unavailable in this build. Choose a whole screen instead.",
+  "windows": [],
+  "displays": [
+    {
+      "src": "display:65537",
+      "name": "Display 1",
+      "x": 0,
+      "y": 0,
+      "w": 1280,
+      "h": 800,
+      "capture_api": "dxgi"
+    }
+  ],
+  "runs": [
+    {
+      "source": "test",
+      "codec": "h264",
+      "frames": 5,
+      "pipeline": "videotestsrc name=source is-live=true pattern=ball ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360,format=NV12 ! mfh264enc name=enc low-latency=true bframes=0 gop-size=60 bitrate=1000 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,alignment=au ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 154
+    },
+    {
+      "source": "test",
+      "codec": "jpeg",
+      "frames": 5,
+      "pipeline": "videotestsrc name=source is-live=true pattern=ball ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360 ! jpegenc name=enc quality=80 ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 7336
+    },
+    {
+      "source": "display:65537",
+      "codec": "h264",
+      "frames": 5,
+      "pipeline": "d3d11screencapturesrc show-cursor=true monitor-handle=65537 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360,format=NV12 ! mfh264enc name=enc low-latency=true bframes=0 gop-size=60 bitrate=1000 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,alignment=au ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 65
+    },
+    {
+      "source": "display:65537",
+      "codec": "jpeg",
+      "frames": 5,
+      "pipeline": "d3d11screencapturesrc show-cursor=true monitor-handle=65537 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360 ! jpegenc name=enc quality=80 ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 113339
+    }
+  ]
+}

docs/evidence/windows-vm-2026-10-24/capture-before.json

@@ -0,0 +1,96 @@
+{
+  "python": "3.12.14 (main, Sep 24 2026, 17:57:31) [MSC v.1944 64 bit (AMD64)]",
+  "resources": "C:\\Users\\frame\\AppData\\Local\\Programs\\Frame Control\\resources",
+  "elements": {
+    "d3d11screencapturesrc": true,
+    "mfh264enc": true,
+    "jpegenc": true,
+    "x264enc": false
+  },
+  "windows": [
+    {
+      "src": "window:131836",
+      "id": 131836,
+      "title": "Administrator: C:\\WINDOWS\\system32\\cmd.exe - powershell  -noprofile -executionpolicy bypass -file \\\\host.lan\\data\\bootstrap.ps1",
+      "app": "Windows",
+      "w": 1115,
+      "h": 628,
+      "x": 51,
+      "y": 52
+    },
+    {
+      "src": "window:327926",
+      "id": 327926,
+      "title": "Administrator: Install",
+      "app": "Windows",
+      "w": 979,
+      "h": 512,
+      "x": 85,
+      "y": 78
+    },
+    {
+      "src": "window:65856",
+      "id": 65856,
+      "title": "Program Manager",
+      "app": "Windows",
+      "w": 1280,
+      "h": 800,
+      "x": 0,
+      "y": 0
+    }
+  ],
+  "displays": [
+    {
+      "src": "display:65537",
+      "name": "Display 1",
+      "x": 0,
+      "y": 0,
+      "w": 1280,
+      "h": 800
+    }
+  ],
+  "runs": [
+    {
+      "source": "test",
+      "codec": "h264",
+      "frames": 5,
+      "pipeline": "videotestsrc name=source is-live=true pattern=ball ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360,format=NV12 ! mfh264enc name=enc low-latency=true bframes=0 gop-size=60 bitrate=1000 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,alignment=au ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 154
+    },
+    {
+      "source": "test",
+      "codec": "jpeg",
+      "frames": 5,
+      "pipeline": "videotestsrc name=source is-live=true pattern=ball ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360 ! jpegenc name=enc quality=80 ! appsink name=out sync=false max-buffers=2 drop=false",
+      "last_bytes": 7336
+    },
+    {
+      "source": "display:65537",
+      "codec": "h264",
+      "frames": 0,
+      "pipeline": "d3d11screencapturesrc capture-api=wgc show-cursor=true show-border=true monitor-handle=65537 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360,format=NV12 ! mfh264enc name=enc low-latency=true bframes=0 gop-size=60 bitrate=1000 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,alignment=au ! appsink name=out sync=false max-buffers=2 drop=false",
+      "error": "no property \"capture-api\" in element \"d3d11screencapturesrc\""
+    },
+    {
+      "source": "display:65537",
+      "codec": "jpeg",
+      "frames": 0,
+      "pipeline": "d3d11screencapturesrc capture-api=wgc show-cursor=true show-border=true monitor-handle=65537 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360 ! jpegenc name=enc quality=80 ! appsink name=out sync=false max-buffers=2 drop=false",
+      "error": "no property \"capture-api\" in element \"d3d11screencapturesrc\""
+    },
+    {
+      "source": "window:131836",
+      "codec": "h264",
+      "frames": 0,
+      "pipeline": "d3d11screencapturesrc capture-api=wgc show-cursor=true show-border=true window-handle=131836 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360,format=NV12 ! mfh264enc name=enc low-latency=true bframes=0 gop-size=60 bitrate=1000 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,alignment=au ! appsink name=out sync=false max-buffers=2 drop=false",
+      "error": "no property \"capture-api\" in element \"d3d11screencapturesrc\""
+    },
+    {
+      "source": "window:131836",
+      "codec": "jpeg",
+      "frames": 0,
+      "pipeline": "d3d11screencapturesrc capture-api=wgc show-cursor=true show-border=true window-handle=131836 ! video/x-raw,framerate=30/1 ! queue name=raw_queue leaky=downstream max-size-buffers=1 max-size-bytes=0 max-size-time=0 ! identity name=gate ! videoconvert ! videoscale add-borders=false ! video/x-raw,width=640,height=360 ! jpegenc name=enc quality=80 ! appsink name=out sync=false max-buffers=2 drop=false",
+      "error": "no property \"capture-api\" in element \"d3d11screencapturesrc\""
+    }
+  ]
+}

docs/evidence/windows-vm-2026-10-24/plugin-properties.json

@@ -0,0 +1,65 @@
+{
+  "gstreamer": "1.28.8",
+  "plugins": [
+    "coreelements",
+    "videotestsrc",
+    "videoconvertscale",
+    "app",
+    "jpeg",
+    "videoparsersbad",
+    "d3d11",
+    "mediafoundation"
+  ],
+  "packages": [
+    "mingw-w64-ucrt-x86_64-gst-plugins-bad 1.28.8-2",
+    "mingw-w64-ucrt-x86_64-gst-plugins-bad-libs 1.28.8-2",
+    "mingw-w64-ucrt-x86_64-gstreamer 1.28.8-1"
+  ],
+  "elements": {
+    "d3d11screencapturesrc": {
+      "name": "The name of the object",
+      "parent": "The parent of the object",
+      "blocksize": "Size in bytes to read per buffer (-1 = default)",
+      "num-buffers": "Number of buffers to output before sending EOS (-1 = unlimited)",
+      "typefind": "Run typefind before negotiating (deprecated, non-functional)",
+      "do-timestamp": "Apply current stream time to buffers",
+      "automatic-eos": "Automatically EOS when the segment is done",
+      "monitor-index": "Zero-based index for monitor to capture (-1 = primary monitor)",
+      "monitor-handle": "A HMONITOR handle of monitor to capture",
+      "show-cursor": "Whether to show mouse cursor",
+      "crop-x": "Horizontal coordinate of top left corner for the screen capture area",
+      "crop-y": "Vertical coordinate of top left corner for the screen capture area",
+      "crop-width": "Width of screen capture area (0 = maximum)",
+      "crop-height": "Height of screen capture area (0 = maximum)"
+    },
+    "d3d12screencapturesrc": null,
+    "mfh264enc": {
+      "name": "The name of the object",
+      "parent": "The parent of the object",
+      "qos": "Handle Quality-of-Service events from downstream",
+      "min-force-key-unit-interval": "Minimum interval between force-keyunit requests in nanoseconds",
+      "bitrate": "Bitrate in kbit/sec",
+      "rc-mode": "Rate Control Mode",
+      "adaptive-mode": "Adaptive Mode",
+      "vbv-buffer-size": "VBV(HRD) Buffer Size in bytes (0 = MFT default)",
+      "max-bitrate": "The maximum bitrate applied when rc-mode is \"pcvbr\" in kbit/sec",
+      "quality-vs-speed": "Quality and speed tradeoff, [0, 33]: Low complexity, [34, 66]: Medium complexity, [67, 100]: High complexity",
+      "cabac": "Enable CABAC entropy coding",
+      "sps-id": "The SPS id to use",
+      "pps-id": "The PPS id to use",
+      "bframes": "The maximum number of consecutive B frames",
+      "gop-size": "The number of pictures from one GOP header to the next. Depending on GPU vendor implementation, zero gop-size might produce only one keyframe at the beginning (-1 for automatic)",
+      "threads": "The number of worker threads used by a encoder, (0 = MFT default)",
+      "content-type": "Indicates the type of video content",
+      "qp": "QP applied when rc-mode is \"qvbr\"",
+      "low-latency": "Enable low latency encoding",
+      "min-qp": "The minimum allowed QP applied to all rc-mode",
+      "max-qp": "The maximum allowed QP applied to all rc-mode",
+      "qp-i": "QP applied to I frames",
+      "qp-p": "QP applied to P frames",
+      "qp-b": "QP applied to B frames",
+      "ref": "The number of reference frames",
+      "d3d11-aware": "Whether device can support Direct3D11 interop"
+    }
+  }
+}

docs/evidence/windows-vm-2026-10-24/windows-system.txt

@@ -0,0 +1,18 @@
+
+WindowsProductName WindowsVersion OsBuildNumber
+------------------ -------------- -------------
+Windows 10 Pro     2009           26200        
+
+
+
+Name                              DriverVersion     Status
+----                              -------------     ------
+Red Hat VirtIO GPU DOD controller 100.103.104.30200 OK    
+
+
+
+       Used       Free
+       ----       ----
+23951253504 9314816000
+
+

docs/evidence/windows-vm-2026-10-24/windows-tests.txt

@@ -0,0 +1,79 @@
+python.exe : test_original_mac_congestion_and_recovery 
+(test_pc_controller.ControllerTrace.test_original_mac_congestion_and_recovery) ... skipped 'C 
+compiler not installed; native build jobs cover this trace'
+At line:12 char:1
++ & $python -B -m unittest discover -s tests -p 'test_pc*.py' -v 2>&1 | ...
++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    + CategoryInfo          : NotSpecified: (test_original_m...ver this trace':String) [], Remote 
+   Exception
+    + FullyQualifiedErrorId : NativeCommandError
+ 
+test_controller_is_inert_after_close 
+(test_pcview.AdapterTests.test_controller_is_inert_after_close) ... ok
+test_dxgi_only_bundle_captures_displays_without_optional_wgc_properties (test_pcview.AdapterTests.
+test_dxgi_only_bundle_captures_displays_without_optional_wgc_properties) ... ok
+test_idle_source_is_not_a_stall (test_pcview.AdapterTests.test_idle_source_is_not_a_stall) ... ok
+test_library_path_prepend_adds_no_empty_entry 
+(test_pcview.AdapterTests.test_library_path_prepend_adds_no_empty_entry) ... ok
+test_linux_uses_only_portal_fd_and_node 
+(test_pcview.AdapterTests.test_linux_uses_only_portal_fd_and_node) ... ok
+test_malformed_viewer_input_is_dropped_not_fatal 
+(test_pcview.AdapterTests.test_malformed_viewer_input_is_dropped_not_fatal) ... ok
+test_pc_card_receives_window_capture_limitation 
+(test_pcview.AdapterTests.test_pc_card_receives_window_capture_limitation) ... ok
+test_pc_reuses_launcher_and_namespaces_panel_ids 
+(test_pcview.AdapterTests.test_pc_reuses_launcher_and_namespaces_panel_ids) ... ok
+test_portal_input_clamps_and_releases_held_state 
+(test_pcview.AdapterTests.test_portal_input_clamps_and_releases_held_state) ... ok
+test_refused_windows_focus_never_clicks_the_covering_app 
+(test_pcview.AdapterTests.test_refused_windows_focus_never_clicks_the_covering_app) ... ok
+test_session_end_releases_native_input_only_once 
+(test_pcview.AdapterTests.test_session_end_releases_native_input_only_once) ... ok
+test_stats_keep_capture_time_and_bound_records 
+(test_pcview.AdapterTests.test_stats_keep_capture_time_and_bound_records) ... ok
+test_windows_release_and_negative_monitor_origin 
+(test_pcview.AdapterTests.test_windows_release_and_negative_monitor_origin) ... ok
+test_windows_sources_follow_actual_wgc_capabilities 
+(test_pcview.AdapterTests.test_windows_sources_follow_actual_wgc_capabilities) ... ok
+test_windows_uses_wgc_and_media_foundation 
+(test_pcview.AdapterTests.test_windows_uses_wgc_and_media_foundation) ... ok
+test_never_offered_off_windows_even_when_turned_on 
+(test_pcview.GatingTests.test_never_offered_off_windows_even_when_turned_on) ... ok
+test_off_by_default_starts_nothing (test_pcview.GatingTests.test_off_by_default_starts_nothing) 
+... ok
+test_only_windows_gets_the_pc_host (test_pcview.GatingTests.test_only_windows_gets_the_pc_host) 
+... ok
+test_server_enable_action (test_pcview.GatingTests.test_server_enable_action) ... ok
+test_turning_off_stops_streams_and_the_helper 
+(test_pcview.GatingTests.test_turning_off_stops_streams_and_the_helper) ... ok
+test_turning_on_checks_for_the_bundled_libraries 
+(test_pcview.GatingTests.test_turning_on_checks_for_the_bundled_libraries) ... ok
+test_expiry_and_stop_before_redeem (test_pcview.GrantsTests.test_expiry_and_stop_before_redeem) 
+... ok
+test_source_bound_retry_ack_and_stop 
+(test_pcview.GrantsTests.test_source_bound_retry_ack_and_stop) ... ok
+test_agent_reports_its_host_and_encoder 
+(test_pcview.NativeTests.test_agent_reports_its_host_and_encoder) ... ok
+test_auth_and_real_h264_stats (test_pcview.NativeTests.test_auth_and_real_h264_stats) ... skipped 
+'x264 is only in CI test bundles, not the installer'
+test_bundled_pipewire_context_needs_no_system_modules 
+(test_pcview.NativeTests.test_bundled_pipewire_context_needs_no_system_modules) ... skipped 
+'Linux PipeWire client libraries'
+test_installer_bundle_leaves_out_gpl_x264 
+(test_pcview.NativeTests.test_installer_bundle_leaves_out_gpl_x264) ... ok
+test_last_raw_picture_survives_a_closed_gate 
+(test_pcview.NativeTests.test_last_raw_picture_survives_a_closed_gate) ... skipped 'x264 is only 
+in CI test bundles, not the installer'
+test_native_property_probe_checks_the_instantiated_element 
+(test_pcview.NativeTests.test_native_property_probe_checks_the_instantiated_element) ... ok
+test_card_says_experimental_and_what_is_unverified 
+(test_pcview.PageTests.test_card_says_experimental_and_what_is_unverified) ... ok
+test_opt_in_is_remembered_with_the_client_preferences 
+(test_pcview.PageTests.test_opt_in_is_remembered_with_the_client_preferences) ... ok
+test_tool_link_is_windows_only_and_marked_experimental 
+(test_pcview.PageTests.test_tool_link_is_windows_only_and_marked_experimental) ... ok
+
+----------------------------------------------------------------------
+Ran 33 tests in 1.684s
+
+OK (skipped=4)

docs/family-comfort.md

@@ -6,6 +6,45 @@ This is Frame Control code using Python, Steam and SteamVR already on the Frame.
 
 ![Family and comfort controls in the desktop app](img/comfort-desktop.png)
 
+## Desktop low-battery alert without a session
+
+In the desktop app, open **Tools → Family & comfort** and check **Alert on this
+computer at 15% or less**. This separate option does not start a session, install
+a worker or change the headset. It starts off whenever the page opens and turns
+off when you switch headsets. The choice is only for the current open page.
+
+It consumes the battery parser already used by normal status refreshes (also
+shared by the read-only power sampler). It adds no SSH calls, timers, sensor
+reads, third-party push or heat thresholds. Normal automatic status refreshes
+pause while the page is hidden, so this is **not a background or safety monitor**.
+Keep the app visible and connected. Use **Enable / test notifications** to check
+system delivery; operating-system settings may block notifications.
+
+Two fresh readings, at least 20 seconds and at most 90 seconds apart, must show
+15% or less, driver state `Discharging`, and signed battery power below −0.5 W.
+This avoids alerting on plugged-in idle readings, which can report discharging.
+Missing, invalid, stale or interrupted readings break confirmation. Disconnect,
+a failed status request, hiding the page or toggling the option also breaks
+confirmation. Unknown readings never mean zero charge.
+
+An alert appears in the page and requests a native desktop notification once
+per low-charge episode. Two readings at 20% or more rearm it, and at least ten
+minutes must pass between alerts (including across headset switches). A single
+recovery spike cannot rearm it. Toggling off/on does not clear the episode latch.
+Notification failure stays visible in the page and does not retry on every
+refresh. While an active family session has battery alerts enabled, that session
+handles battery alerts instead. Multiple app windows have independent state;
+this does not coordinate notifications between computers or windows.
+
+A read-only check on 2026-10-24, build **20261015.6141207**, received two samples
+at 99%, `Not charging`, approximately −0.06 W and 24 °C. No low-battery condition
+was induced, no notification was sent to the real headset, and no headset state
+was changed. The sampler's local and remote smoke-lock checks allowed the run;
+no lock was acquired or removed. Deterministic tests exercise low charge,
+recovery, missing readings, idle drain, timing and notification denial. See
+[recorded evidence](evidence/desktop-battery-comfort-2026-10-24.json). Native OS
+notification display, worn use and macOS/Windows packaging were not verified.
+
 ## Sessions
 
 Set a limit of 1–240 minutes, optional break and check-in intervals, then

docs/file-transfer.md

@@ -15,6 +15,10 @@ depends on SSH working through the `frame` alias from `scripts/connect.sh`.
 | KDE Connect | KDE Connect on both | Guess | There's a macOS build of KDE Connect, but whether it's present or installable on the Frame wasn't confirmed. It would give you clipboard sync, file send, and remote input. Worth checking on-device. |
 | microSD | Physical card | Confirmed that the slot exists ([Wikipedia](https://en.wikipedia.org/wiki/Steam_Frame)) | Offline fallback. |
 
+Screenshots and Steam clips have their own buttons on **Tools → Capture &
+Live**, and **Settings → Copy to this computer** copies new ones here
+automatically: see [recording.md](recording.md#copying-new-ones-automatically).
+
 ## Clipboard
 
 `scripts/paste-to-frame.sh` sends the Mac clipboard (or stdin) to the
@@ -36,3 +40,34 @@ desktop has to be running in the headset. It's text only, and pastes over about
 
 A simpler fallback: `ssh frame 'cat > ~/clip.txt'` < file, then open it in the
 headset.
+
+### In Frame Control
+
+**Tools → Type on the headset** (also on Home, and press `T` anywhere) has the
+clipboard next to the keyboard and trackpad, both ways:
+
+- **Send text** or **Send this computer's clipboard** puts text on the headset's
+  clipboard, as above.
+- **Copy the headset's clipboard** brings it back: copy something in a desktop
+  app on the Frame, then press it, and paste on your computer. It calls
+  Klipper's `getClipboardContents` on the same D-Bus bus, and sends the text
+  back as base64, so accents, emoji and line breaks arrive unchanged. The
+  desktop app and the iPhone app put it on their own clipboard. With the server
+  in a browser, the server sets the clipboard of the computer it runs on:
+  `pbcopy` on macOS, PowerShell's `Set-Clipboard` (or `clip.exe`) on Windows,
+  `wl-copy`, `xclip` or `xsel` on Linux.
+
+It's text only, and copying back takes up to 1 MB; a bigger clipboard is
+refused with a message, so send big things as a file. An empty clipboard, or
+one holding an image, says so. Neither the server nor its log ever records what
+was on the clipboard.
+
+**Verified on a Frame, 2026-10-24:** SteamOS 0.5.6, build
+`20261015.6141207`. With a temporary nested desktop open, Frame Control sent
+a 47-character test marker to Klipper, then **Copy the headset's clipboard**
+read it through `getClipboardContents` and set a Linux PC's X11 clipboard.
+Reading that PC clipboard returned the exact marker. The prior headset
+clipboard was restored and the test desktop was closed. The PC side used a
+temporary X display on lxso2; macOS and Windows clipboard backends, a user's
+copy action in a headset app, and image/size error cases remain untested on a
+real headset. The fake Frame (`tests/fakeframe`) covers the protocol cases.

docs/frame-control.md

@@ -25,7 +25,7 @@ settings, reports), **Tools** (in the headset: your computer's windows, the medi
 player and the panel switcher; then sending files and text, Flatpaks, remote and
 power), **Devices** (your headsets and their addresses), and **Control** (the
 searchable Control Center, metrics, supported settings and headset guidance).
-Keys 1–6 switch between them. The gear in the header (key 7) opens **Settings**:
+Keys 1–6 switch between them, and `T` opens Type on the headset. The gear in the header (key 7) opens **Settings**:
 privacy and updates, library artwork and the assistant. The battery chip opens
 the headset's details: storage, memory, temperature, Wi-Fi, uptime and SteamOS
 build. Files can be dropped anywhere in the window. A
@@ -49,11 +49,27 @@ counts them while they run.
   gamescope's flat layer instead.
 - **Screenshots** you take in the headset with Steam's shortcut: browse them and
   save them to `~/Pictures/SteamFrame`.
+- **Record** what the headset shows, with its sound, to an `.mp4` in
+  `~/Videos/SteamFrame`, and **Steam clips**: export clips and background
+  recordings from Steam's game recording at any length, without re-encoding.
+  See [recording.md](recording.md). Not tested on a headset yet.
+- **Backup & recovery** (Tools): copy game saves, settings and Android app data
+  to `~/Documents/Frame Control Backups/<time>/` with a checksummed manifest,
+  restore chosen parts after a factory reset, and **Return to Game Mode** when
+  the headset is stuck in Desktop Mode. Sign-in files and keys are never copied.
+  Not tested on a headset yet. See [backup-and-recovery.md](backup-and-recovery.md).
 - **Battery** with charging state: charge rate in watts, time to full or empty,
   charger type and wattage (for example USB-C PD 20 W), and battery temperature.
 - **Status**: storage, memory, temperature, Wi-Fi, uptime, and whether SteamVR,
   the desktop, Lepton and xrdp are running.
 - **Library** shelf with Steam cover art and a Play button (`steam://rungameid`).
+- **Force quit** a game that has stopped responding: Steam games, sideloaded
+  titles, non-Steam shortcuts and Android apps. **Running now** at the top of
+  Games lists what's running; each game's own **Force quit…** (on its library
+  tile, or in a sideloaded title's ⋯ menu) and the Control Center's **Force quit
+  a game** card do the same. Each asks first, because unsaved progress is lost.
+  Steam is asked to quit the game, then its processes get SIGTERM and SIGKILL;
+  see [steam-games.md](steam-games.md#force-quitting-a-running-game).
 - **Get games**: every game you own with its Steam Frame rating (Verified,
   Playable, Unsupported, Unknown). Install on Frame downloads it to the headset
   with live progress. Search the Steam store with prices and Frame ratings; Buy
@@ -80,8 +96,14 @@ counts them while they run.
   their own Android app. A game's `.zip`, folder or `.exe` becomes a title in
   the Steam library (Valve's Devkit Game path, with Proton or the Steam Linux
   Runtime picked from the program's header), listed under **Sideloaded titles**
-  with Launch and Remove; see [sideloading.md](sideloading.md). Send typed text, or your computer's clipboard, to the
-  Frame clipboard.
+  with Launch and Remove; see [sideloading.md](sideloading.md).
+- **Type on the headset** (on Home, in Tools, in the Control Center, or press
+  `T`): use your computer's keyboard and mouse, or a phone's touchscreen, in the
+  Frame's apps through KDE Connect, and move clipboard text both ways. Send
+  typed text or your computer's clipboard to the headset, or copy the headset's
+  clipboard back: copy in a desktop app on the Frame, then **Copy the headset's
+  clipboard**. The clipboard needs the desktop panel open in the headset; it's
+  text only, up to 1 MB. See [file-transfer.md](file-transfer.md#clipboard).
 - **Mac in the headset** (macOS): show any Mac window, or a whole screen, as
   its own panel in the headset. Place it with the SteamVR dashboard, click and
   scroll with the laser, and type on the Mac. Streams hardware H.264 through
@@ -127,6 +149,12 @@ GPU time is render time, not GPU utilisation. The temperature is the hottest
 readable sensor. Thermal trip warnings use per-zone kernel hot/critical limits,
 not a guessed universal temperature threshold.
 
+**Force quit a game** lists what's running only when you choose **Check what's
+running**, and says so when nothing is. Each **Force quit…** names the game and
+warns that unsaved progress will be lost before anything is sent; it uses the
+selected headset, refuses a second quit while one is running, and drops the
+list when you switch headsets.
+
 **Audio** controls the default output sink through the existing `/api/volume`
 endpoint. Moving its slider prepares a value; **Apply volume** sends it. **Mute**
 and **Unmute** send explicit mute states. The UI captures the selected headset,
@@ -220,8 +248,8 @@ Google publishes no arm64 Linux platform-tools. Set Up Connection runs
 `ui/frame_connect.py` in your terminal emulator (GNOME Terminal, Konsole, xterm
 and others). The log is at
 `~/.config/Frame Control/logs/server.log`. Running `ui/server.py` in a browser
-instead of the app, sending the clipboard needs `wl-clipboard` (Wayland) or
-`xclip` (X11).
+instead of the app, sending the clipboard, or copying the headset's to this
+computer, needs `wl-clipboard` (Wayland), `xclip` or `xsel` (X11).
 
 ## Building
 

docs/frame-doctor.md

@@ -0,0 +1,177 @@
+# Frame doctor
+
+Run `scripts/frame-doctor.sh` from a checkout on macOS or Linux to diagnose
+first-time setup, pairing and common Frame failures without applying repairs.
+It needs Bash, Python 3 and OpenSSH on the computer, and Python 3 on the Frame.
+Windows users can run `python scripts/frame_doctor.py` with Python and OpenSSH
+installed; the desktop app does not bundle this command.
+
+```sh
+scripts/frame-doctor.sh
+scripts/frame-doctor.sh --alias bedroom --lan frame.local
+scripts/frame-doctor.sh --alias frame --lan 192.168.1.40
+```
+
+Use only addresses belonging to your intended headset. The command tries the
+existing `frame` SSH alias first (Tailscale if setup configured it that way),
+then `frame.local`, then USB-C at `10.86.200.233`. `--alias`, `--lan` and `--usb`
+override those defaults. It reports the successful path without printing its
+address. It neither discovers other devices nor enables Tailscale.
+
+The existing alias supplies the user, port, keys and known-hosts file. LAN and
+USB overrides preserve its `HostKeyAlias`, or its configured hostname if no
+alias was set. A first connection therefore needs trusted setup first. The
+doctor never accepts a new host key, deletes a saved key, generates keys or
+sends a pairing request. It uses your trusted OpenSSH configuration; OpenSSH
+can evaluate `Match exec` conditions in that configuration. Proxy commands,
+jumps, local commands, forwarding and connection sharing are disabled for
+these direct diagnostic connections.
+
+## Reading the result
+
+Each of the eleven runbook sections has one line: `OK`, `WARN`, `BROKEN` or
+`UNKNOWN`. `OK` means only that the stated check passed, not that the whole
+feature works. Optional features that are off may produce a warning.
+
+| Section | Read-only evidence and limits |
+|---|---|
+| 1. Boot and crash history | Previous-boot kernel-oops signatures; one day of coredump history. An oops alone does not prove an unclean reset. |
+| 2. Wi-Fi | NetworkManager's wlan0 state, without SSIDs or connection profiles. |
+| 3. Displays and SteamVR | DSI timeout signatures in the recent kernel journal; no display, compositor or game is launched. |
+| 4. Steam and storage | Free space in home and `devkit-game`, including separate mounts; missing Steam install marker. No CRC scan or restart. |
+| 5. Idle sleep and keep-awake | Existing keep-awake unit state; never takes ownership or changes idle timers. |
+| 6. Remote wake | WoWLAN state, without arming it or testing suspend. Wake with the power button. |
+| 7. Lepton | Recent port-clash, binder and data-clearing signatures; no Android/container commands. |
+| 8. Chromium XR | Crash history; no browser profile or environment inspection. |
+| 9. KDE Connect | Process presence; absence is normal when sharing is off. |
+| 10. Streaming and capture | ffmpeg crash history; no capture or encoder is started. |
+| 11. Panels | Always `UNKNOWN`: placement requires the user's visual confirmation. |
+
+Journal samples are capped at 2,000 entries; current-boot samples cover the
+last ten minutes. This can miss older or high-volume failures. Empty,
+inaccessible or permission-limited journals are `UNKNOWN`, never zero errors.
+Commands time out individually, and each SSH probe is bounded to 90 seconds.
+
+Exit codes: **0** if all reported checks are OK; **1** for warnings, broken or
+unknown checks after connecting; **2** if no authenticated SSH path exists or
+local SSH setup is unavailable. Panel verification currently means a connected
+run normally exits 1. Automation should read the labelled checks rather than
+treating a warning as proof the headset is unusable.
+
+## Read-only repair plan and before/after reports
+
+```sh
+scripts/frame-doctor.sh --plan --save-report before.json
+# Review the plan with the headset user. Any manual action is separate.
+scripts/frame-doctor.sh --plan --compare-before before.json --save-report after.json
+```
+
+`--plan` prints advice; it never executes repair commands or prompts for approval.
+There is no automatic repair mode. Advice about Wi-Fi, display timeouts, low
+storage, a missing Steam install marker or keep-awake requires the exact
+recognized section, severity and evidence. Other warnings request local review;
+unknown evidence never justifies a repair. A signature or missing marker alone
+does not establish a cause. Restart risk, rising counters or unknown counters
+block all section-specific plans and direct you to the recovery runbook.
+Nothing changes passwords, headset security, pairing, services or power settings.
+
+Reports are optional **local** JSON files containing only fixed diagnostic
+summaries, a format version and an opaque SSH-target configuration fingerprint.
+The fingerprint binds comparisons to the same alias, identity/routing
+configuration and fallback addresses; it does not prove physical headset
+identity or that the headset was not replaced behind that configuration. Keep
+using trusted SSH host keys. Report creation is exclusive (existing files and
+symlinks are refused), with owner-only permissions on POSIX. Protect reports
+using your local account permissions on Windows. Choose a fresh output filename
+for each run. Doctor never writes a report on the headset.
+
+`--compare-before` validates a bounded baseline before connecting and refuses
+changed target configuration. It prints each section's before/after status and
+prints both fixed evidence messages when they differ, even if the status
+stayed the same. Changes are observations, not proof a repair worked or caused them;
+recent journal windows can simply age out. There is no intervening repair by
+doctor, freshness guarantee, or authenticated report signature. If either run
+skipped deeper checks, comparison is blocked and no improvement is claimed.
+Unreachable or invalid probes produce no new baseline or comparison. Malformed
+baseline/target mismatch/report-write errors exit **2**; otherwise normal
+diagnostic exit codes apply. No saved report is needed for ordinary diagnostics.
+
+## First-time setup and pairing
+
+- **No SSH response:** wake the headset with its power button. Check the cable
+  or Steam Settings → Internet, then enable Developer Mode. Sleep and network
+  failure can look alike; a timeout cannot distinguish them.
+- **Key rejected:** open **Set Up Connection** in Frame Control. In the headset,
+  open Steam Settings → Developer → **Pair new host**, then approve setup's
+  request. The doctor only checks whether devkit port 32000 responds; that
+  does not prove pairing mode is open or the service is healthy.
+- **Unknown or changed identity:** verify the intended headset through setup
+  or Devices → **Check its key**. Do not delete `known_hosts` to bypass this.
+- **No devkit response:** check Developer Mode and the address. See
+  [SSH setup](ssh.md) for the manual fallback. The doctor cannot turn SSH on.
+
+No password is requested. Enter any password required by the separate setup
+flow only in its local terminal; never paste it into an issue or report.
+
+## Restart safety and recovery
+
+Before deeper checks, and again afterwards, the doctor samples Steam and
+SteamVR `NRestarts` and health-check tracker sizes two seconds apart. Rising
+counters stop diagnostics immediately. Nonempty health-check trackers also stop
+deeper checks even when stable, since a short sample could miss a slower loop.
+Missing counters or counters that reset stop deeper checks as `UNKNOWN`. Stable
+counters with empty trackers still cannot rule out a slower restart loop.
+
+The [historical runbook from PR #33](https://github.com/saphid/frame-control/blob/cce3d940302054ab5246c92d740afaefc4e58d38/docs/frame-doctor.md)
+is the source for these section numbers and observed signatures (September
+2026 builds). Its section 4 describes freezing and verifying health-check
+trackers before prolonged recovery during a live loop. That changes headset
+state, so this read-only implementation stops and directs you there instead.
+The optional plan and baseline comparison are a guarded next step for issue
+#34; automatic fixes and full recovery automation remain unimplemented. Review
+build-specific recovery instructions with the person using the headset; a repair can remove data.
+
+Never reload `ath12k`, suspend remotely, kill gamescope to diagnose a loop,
+reset or force power off during extraction/repair, or write passwords to disk.
+The doctor never restarts services, signals processes, repairs Steam, changes
+WoWLAN/standby settings, takes keep-awake ownership, installs anything or writes
+a remote report. Only `--save-report` creates a local file. Nothing needs
+restoring on the headset after its checks. Manual/device tests must
+follow the [shared-device lock and battery procedure](testing.md#headset-smoke-test).
+
+## Privacy and verification
+
+Only fixed diagnostic summaries leave the remote probe. Raw journals, process
+arguments, environment variables, SSH errors, account IDs, network addresses,
+SSIDs, keys and tokens are not printed. No telemetry or HTTP request is sent;
+the only pairing-service probe is a TCP connection. SSH produces normal access
+logs. Review summaries before sharing them; feature availability can still be
+personal information. Redirecting stdout or using `--save-report` saves a report
+only if you choose it.
+Treat the target fingerprint as private metadata; it is a hash, not encryption.
+
+Unit tests use mocked boundaries. `scripts/e2e.sh test_doctor` covers asleep,
+disk-full, SSH/devkit-off and missing-key faults against the fake Frame. Its
+stable restart counters are explicitly simulated, not proof about SteamOS.
+On 2026-10-24 the script ran read-only against a real Frame, SteamOS build
+`20261015.6141207`. It verified the configured SSH alias and key login,
+then reported `WARN Restart safety`: nonempty health-check trackers. It
+correctly skipped all eleven deeper sections and exited 1. No raw logs,
+addresses or keys were printed, and no repair or restart was attempted.
+This verifies the safety stop on that device; the deeper checks are not
+claimed as headset-tested.
+
+Follow-up verification on 2026-10-24: `--plan --save-report` and then
+`--plan --compare-before` ran read-only on the same real Frame. Both reported
+nonempty health-check trackers, skipped deeper checks and exited 1. The plan
+was blocked and the comparison reported `risk -> risk` without claiming
+improvement. No install, launch, stop or repair was performed; this validates
+the guarded report path, not the deeper checks or any manual repair.
+
+The follow-up's 17 focused offline tests passed. All five doctor fake-Frame
+tests passed, including a disk-full baseline followed by fault removal and a
+fresh comparison. The final evidence-output change also passed that comparison
+test again. Because zsh is unavailable on this host, the repository's images
+were built and its Compose harness run directly under the isolated project
+`frame-doctor-plan-34`; its containers and volumes were removed afterwards.
+These storage changes were fake fault controls, not doctor repairs.

docs/game-storage.md

@@ -0,0 +1,91 @@
+# Game storage
+
+Open **Tools → Game storage** for a read-only snapshot of the headset's user
+filesystem and Steam libraries. Refresh after an installation, download or move.
+The page never moves, deletes or modifies content, starts Steam, requests root,
+or recursively scans game files. It works through the existing SSH connection.
+
+## What the numbers mean
+
+- **Total, free and used** come from `statvfs` on the headset user's home and
+  each library path. Free is space available to that user; reserved blocks mean
+  used + free can be less than total. These are filesystem sizes, not advertised
+  drive capacity, and do not include separate system partitions.
+- Libraries come from `~/.local/share/Steam/steamapps/libraryfolders.vdf` plus
+  the default Steam library. Modern nested and older numbered-path records are
+  accepted; canonical duplicate paths are shown once. No drive is mounted.
+- Two paths can share one filesystem. Their capacity must **not** be added.
+  An unmounted drive whose mount directory still exists can report the parent
+  filesystem's capacity: the page labels this as the filesystem containing the
+  path, rather than claiming the removable drive is connected.
+- Game sizes are Steam's `SizeOnDisk` records in `appmanifest_<appid>.acf`, sorted
+  largest first, with unknown sizes last. A missing, negative or invalid size
+  is **Unknown**, while an explicit zero remains zero. Records may be stale,
+  including during downloads or moves; they do not measure allocated blocks.
+- Games/apps and runtimes/tools have separate subtotals of **known recorded**
+  sizes. Runtime classification uses names (Proton, Steam Linux Runtime,
+  Steamworks Common, FEX and Lepton Development), so it is only a convenience.
+  Additional apps or runtimes may fall in the game/app group.
+- Saves, Proton prefixes, shaders, workshops, downloads, Android apps,
+  sideloaded games, media and OS files are **unmeasured other usage**. The page
+  does not subtract manifest totals from filesystem usage to invent a size for
+  them. Recorded content is not an exhaustive storage breakdown.
+
+Permission denied, missing/disconnected paths, unavailable filesystem reads,
+invalid metadata and partial inventories are reported separately. A failed read
+is never proof of an empty library. If library discovery fails, other libraries
+may be missing from the view. Refresh clears the old results immediately; a
+headset switch clears the snapshot and ignores late replies from the old device.
+
+## Moving a game safely
+
+Use Steam's own **Settings → Storage** on the headset (or in desktop Steam):
+choose the source drive, select the games and choose **Move**, then pick a
+Steam-supported destination. A second Steam library must already be available.
+Steam may withhold Move or a destination when it cannot perform the operation.
+Let Steam finish, follow Steam's errors/recovery prompts, then Refresh here.
+Do not manually delete files to make room or interrupt an in-progress move.
+
+[Valve's moving guide](https://help.steampowered.com/en/faqs/view/4BD4-4528-6B2E-8327#move)
+was read in a browser on 2026-10-24 and documents this UI. This is an instructional
+handoff: the page does not send a URI or silently open a UI on the headset.
+The guide's separate Windows instructions for moving the entire Steam client
+are outside this feature's scope.
+
+### Why Frame Control does not automate moving
+
+The repository's Valve devkit tools register and launch developer titles; no
+supported game-move operation is provided there. The existing Steam CEF bridge
+uses internal client APIs, which are not a verified supported contract for a
+move transaction. [Valve's public ISteamApps reference](https://partner.steamgames.com/doc/api/ISteamApps) provides install-directory
+and installed-depot queries but no documented move transaction with completion,
+cancellation, rollback and error guarantees. The public support guide describes
+the user-operated Storage UI, rather than such an automation interface.
+
+Consequently this feature adds no move endpoint or guessed internal Steam call,
+manifest rewrite, copy/delete fallback, or custom rollback. Automating a move
+requires a supported interface and verified behaviour for full disks, disconnects,
+running games, downloads, cancellation and Steam restart first.
+
+## Verification and limits
+
+`tests/test_storage.py` runs the actual probe against temporary Steam metadata
+and filesystem/error fixtures. It covers multiple libraries, duplicate paths,
+zero/unknown/invalid sizes, corrupt manifests, unreadable directories and files,
+missing discovery/drives, reserved capacity and read-only file preservation.
+A loopback HTTP test executes the real guarded endpoint with SSH mocked.
+`tests/storage.cjs` runs the production renderer, navigation and refresh handlers
+with DOM/transport boundaries faked, including escaping, offline errors,
+out-of-order refreshes and headset switches. It runs through unittest discovery.
+
+The production storage component was rendered with synthetic data at 390px and
+900px widths; both fit without horizontal overflow. This checks component
+layout, not the full connected application or headset browser.
+
+On 2026-10-24 the uninstalled storage parser was piped read-only over SSH
+to a real Frame running SteamOS build `20261015.6141207`. It reported
+710.4 GiB free on the user filesystem, one available Steam library, 29
+readable app manifests, zero unknown sizes and zero parse/permission issues.
+No game names or raw metadata were printed in the test report. The
+connected UI, removable media, Steam's Move UI and an actual game move were
+not tested. UI and error-state fixtures remain synthetic.

docs/how-the-frame-works.md

@@ -96,5 +96,6 @@ ssh frame 'cat /opt/steamvr/resources/webinterface/dashboard/localization/dashbo
 - Remote access from anywhere: [tailscale.md](tailscale.md)
 - Floating windows in space: [panels.md](panels.md)
 - Recovery images, what's in them, testing without the headset: [recovery-and-images.md](recovery-and-images.md)
+- Backing up saves and settings, restoring after a reset, leaving Desktop Mode: [backup-and-recovery.md](backup-and-recovery.md)
 - Frame Control on iPhone (the server running on the Frame itself): [iphone.md](iphone.md)
 - What's still unverified: [open-questions.md](open-questions.md)

docs/iphone.md

@@ -102,8 +102,9 @@ app installed opens its App Store page.
 Things iOS asks the first time: **Local Network** (tap Allow, or the app can't
 see the Frame), and **Paste** when you send the iPhone's clipboard (tap Allow
 Paste, or set Settings → Apps → Frame Control → Paste from Other Apps → Allow).
-Sending text to the Frame's clipboard needs the desktop panel open in the
-headset, as on the desktop app.
+Sending text to the Frame's clipboard, or copying the Frame's to the phone
+(**Type on the headset → Copy the headset's clipboard**), needs the desktop
+panel open in the headset, as on the desktop app.
 
 Not yet exercised: Android display changes through podman (no Android app was
 running), a real sleep/restart/shut down on the Frame, and a physical iPhone.

docs/mac-in-headset.md

@@ -4,7 +4,8 @@ Frame Control can show any Mac window, or a whole Mac screen, as its own panel
 in the Steam Frame. You place each panel anywhere in the room with the SteamVR
 dashboard. The laser clicks and drags, the thumbstick scrolls, and you type on
 the Mac's own keyboard. Find it under **Tools → Mac in the headset** (macOS
-only).
+only). On Windows there's an experimental port,
+[PC in the headset](pc-in-headset.md).
 
 The confidence labels are the same as in [ssh.md](ssh.md).
 

docs/open-questions.md

@@ -143,6 +143,15 @@ check in the headset:
 - Keys from SteamVR's on-screen keyboard.
 - Whether Flathub Chromium decodes H.264 (otherwise use Compatible).
 
+## Battery charge limit (2026-10-23)
+
+Can an 80% charge limit be set over SSH or adb? **Not safely yet.** SteamOS
+Manager's `BatteryChargeLimit1` (the interface Steam's own setting uses) has
+no backend in the Frame's device config, and the battery node is a
+`max1720x` fuel gauge with no `charge_control_end_threshold`. Research and
+read-only headset checks are in [charge-limit.md](charge-limit.md). Not tested
+on a headset.
+
 ## Unconfirmed claims made in these docs
 
 - `/home` and `/etc` persist across Frame OS updates. This is inferred from

docs/pc-in-headset.md

@@ -0,0 +1,155 @@
+# PC in the headset (Experimental)
+
+**Tools → PC in the headset**, on Windows only. It's the Windows version of
+[Mac in the headset](mac-in-headset.md): a whole screen on your PC
+becomes its own SteamVR panel in the Frame. Individual windows are available only
+with streaming libraries built with Windows Graphics Capture (WGC); the shipped
+MSYS2 libraries disable WGC, so this build explains that limitation and offers
+whole screens. Place the panel with the dashboard's Float
+in World, Move and Size, point and click with the laser, scroll with the
+thumbstick, and type on the PC's keyboard.
+
+**It's experimental.** A Windows 11 VM has captured its real desktop with
+Desktop Duplication and encoded it with Media Foundation and JPEG. Physical PCs,
+hardware encoding and physical laser input remain unverified. See
+[the dated evidence](evidence/windows-vm-2026-10-24.md) for results and limits.
+Reports are welcome through the
+[feedback form](https://frame-control.pages.dev/feedback/).
+
+## Turning it on
+
+It's off by default. Until you tick **Turn on PC in the headset** on the card,
+Frame Control starts no helper, loads none of the streaming libraries and lists
+no windows. The choice is remembered on this computer. Turning it off ends
+every stream, closes the viewers in the headset and stops the helper.
+
+The card and its Tools link only appear in the Windows app. On macOS the card
+is Mac in the headset, as before; on Linux and the iPhone app there's no card.
+
+## How it works
+
+The ported pieces are from [PR #38](https://github.com/saphid/frame-control/pull/38).
+Frame Control owns the host helper, input, authentication, streaming protocol,
+panel launcher and adaptation. It doesn't need Sunshine, OBS or any other
+streaming app. GStreamer is bundled as ordinary libraries.
+
+| | Windows |
+|---|---|
+| Capture | GStreamer's `d3d11screencapturesrc`: Desktop Duplication for whole screens in the shipped build; Windows.Graphics.Capture by window (HWND) or screen (HMONITOR) when that implementation is present |
+| Encoding | Media Foundation's H.264 encoder (`mfh264enc`), low latency, no B-frames. Whether it uses the GPU depends on the PC; **not verified** |
+| Input | `SendInput`, mapped through the source's bounds, with per-monitor DPI awareness |
+
+API references:
+[Windows capture](https://learn.microsoft.com/en-us/windows/uwp/audio-video-camera/screen-capture),
+[GStreamer WGC](https://gstreamer.freedesktop.org/documentation/d3d11/d3d11screencapturesrc.html),
+[Media Foundation encoder](https://gstreamer.freedesktop.org/documentation/mediafoundation/mfh264enc.html).
+
+It needs Windows 10 or 11 with Desktop Duplication and a Media Foundation
+H.264 encoder (Windows "N" editions need the Media Feature Pack). WGC-enabled
+builds can also capture individual windows. Clicks and
+keys can't reach administrator apps or the sign-in screen, which an ordinary
+process can't drive. If Windows won't bring the chosen window to the front,
+input is refused rather than sent to the app covering it: bring the window
+forward, then Stop and Show again. Minimised or closed windows stop sending
+pictures. Protected video isn't supported. Mac in the headset's "own display
+per window" is Mac-only.
+
+The pieces it shares with Mac in the headset:
+
+- `ui/frame_macview.py` owns the SSH tunnel, reconnects, quality presets and
+  panel launch. `ui/frame_pcview.py` picks the Windows helper
+  (`ui/frame_pc_agent.py`, `ui/frame_pc_capture.py`, `desktop/capture.c`) and
+  holds the on/off switch. `/api/macview` is the endpoint for both.
+- `ui/mac-view.html` is the one viewer in the headset. Its frame header, H.264
+  and JPEG payloads, reconnect handshake, clock sync, timing reports and input
+  messages are unchanged.
+- `desktop/controller.c` is a C port of the Mac helper's Swift rate controller,
+  for the Windows helper. The Mac keeps its Swift original;
+  `tests/test_pc_controller.py` checks the port against a frozen 600-state
+  trace from it. Capture is gated before encoding, so encoded frames are never
+  dropped, and an idle window's last picture still goes out once the link
+  clears.
+- Stream records use the Mac helper's JSON schema (`ui/frame_stream_stats.py`),
+  so the benchmark's analysis is shared.
+
+## Packaging
+
+The Windows installer carries `resources/desktop/bundle`: `pc-host.dll` (our
+adapter and the controller), the GStreamer plugins it uses (`coreelements`,
+`videotestsrc`, `videoconvertscale`, `app`, `jpeg`, `videoparsersbad`,
+`d3d11`, `mediafoundation`) and the DLLs they depend on, all from MSYS2's
+UCRT64 packages. `libraries.json` records the GStreamer version, the plugins,
+each copied DLL and the exact package versions; licence texts are in
+`licenses/`.
+
+MSYS2's `gst-plugins-bad` build disables `d3d11-wgc`. The presence of
+`d3d11screencapturesrc` alone does not prove WGC support: its `capture-api`,
+`window-handle` and `show-border` properties are conditional. The helper queries
+those properties on the instantiated element, advertises only supported
+sources, and omits all three properties for the DXGI whole-screen pipeline.
+It never substitutes a screen crop for an unavailable window capture.
+
+The x264 encoder is **not** in the installer. It's GPL, and Windows encodes
+with Media Foundation, so only CI's test builds include it
+(`desktop/build.py --with-x264`). The macOS and Linux installers are unchanged.
+
+From a source checkout on Windows, build the bundle from an MSYS2 UCRT64 shell
+with the packages listed in `.github/workflows/pc-host.yml`:
+
+```sh
+python desktop/build.py              # what the installer ships
+python desktop/build.py --with-x264  # for the native tests
+```
+
+A missing bundle is reported on the card; nothing is downloaded on first use.
+
+The Linux adapter from #38 (desktop portal, PipeWire, VA-API) is in the tree,
+because it shares `capture.c` and the controller, and CI still builds and tests
+it. The app never offers it and the Linux installers don't include it.
+
+## Measuring
+
+The Mac benchmark accepts the PC host:
+
+```sh
+python scripts/macview-bench.py run --pc --scenario test --label pc-test
+python scripts/macview-bench.py run --pc --scenario capture --source window:12345 --label windows-window
+```
+
+`capture` needs a window or screen id from the helper's `/windows` or
+`/displays`. CPU sampling isn't available on PC hosts. See
+[Mac in the headset](mac-in-headset.md) for the targets and shaping options.
+
+## What's verified
+
+- **Verified in CI, this PR:** on `windows-latest`, the native adapter builds
+  and a real x264 synthetic stream passes the ticket, reconnect, timing and
+  input-echo tests through the helper. The Windows installer builds with the
+  bundle, and its bundled Python loads the bundle, starts the helper and
+  confirms x264 isn't in it. Unit tests check the Windows-only, off-by-default
+  gating, the card and the Tools link on macOS, Windows and Linux.
+- **Verified, #38, 2026-09-28, real Frame on SteamOS BUILD_ID 20260925.6191901:**
+  the PC helper (ARM64, on the Frame itself, x264 test pattern) streamed
+  through a Mac SSH relay into the shared viewer: 400 frames at 39.3 fps,
+  content latency p50/p95 15.1/28.6 ms, synthetic input p50 76.6 ms, at
+  revision `cd20243`. The frame-rate and late-frame targets failed. This
+  proves the helper and the viewer work together; it isn't Windows capture or
+  a real PC link.
+  [Raw result](../bench/results/2026-09-28-cd20243-pc-agent-frame-arm64-final.json),
+  [earlier probe](../bench/results/2026-09-28-c5fc552-dirty-pc-agent-frame-arm64-hairpin.json).
+- **Verified, #38, on a Mac:** the C controller matched all 600 states of the
+  Swift controller's congestion and recovery trace.
+- **Verified, 2026-10-24:** Windows 11 VM build 26200.8037 on lxso2, using
+  the v0.4.10 installer with this fix, captured its actual desktop and streamed
+  H.264 to Frame BUILD_ID `20261015.6141207`: 219 sent frame records, 215 decoded
+  and drawn before the snapshot. The own-panel screenshot shows the Windows
+  desktop. This short, mostly idle run does not establish performance targets.
+  [Evidence, raw traces and cleanup](evidence/windows-vm-2026-10-24.md).
+- **Not verified:** Windows.Graphics.Capture, physical-PC capture, hardware
+  Media Foundation encoding, encoder restarts when the bitrate
+  changes, mixed-DPI and multi-monitor input alignment, window resize and
+  minimise, non-US keyboard layouts, physical laser input, and how it performs
+  in a worn headset. No numbers are claimed for these. Not tested with a
+  worn headset. See the dated VM evidence for the separate automated checks.
+- **Not reviewed independently.** #38 tried an independent review that never
+  completed.

docs/power-and-heat.md

@@ -0,0 +1,224 @@
+# Read-only power and heat measurements
+
+Issue [#52](https://github.com/saphid/frame-control/issues/52) starts with
+measurement. `scripts/frame-power-sample.sh` is a bounded, on-demand sampler
+over the existing `ssh frame` alias. It needs Python 3 on both computers and
+an already paired, awake, reachable Frame. It uses strict SSH host-key checking
+and batch mode; it never pairs, prompts for a password or changes SSH security.
+
+```sh
+# Twelve samples, five seconds apart (about 55 seconds), JSON report:
+scripts/frame-power-sample.sh > power.json
+
+# Five-minute observation: samples at 0, 5, ... 300 seconds:
+scripts/frame-power-sample.sh --count 61 --interval 5 > baseline.json
+
+# Long-form CSV samples; JSON summary goes separately to stderr:
+scripts/frame-power-sample.sh --count 12 --interval 5 --csv > power.csv 2> summary.json
+```
+
+Count is limited to 1–720; interval to finite values from 1–60 seconds. These
+are target start-to-start intervals, not guarantees: read latency can delay a
+sample. Wall-clock `time` and monotonic `elapsedSeconds` record actual timing.
+The first sample has no CPU utilization: two valid `/proc/stat` observations
+are required. CPU utilization then covers the interval between observations,
+averaged across the machine, rather than the utilization of one process.
+
+## Start, stop and open an accessible report
+
+From a source checkout with Python 3 and your already trusted `ssh frame`
+connection, start a local observation:
+
+```sh
+scripts/frame-power-sample.sh --count 12 --interval 5 --html power-report.html
+```
+
+Progress is printed on your computer as each sample arrives. Wait for completion,
+or press **Ctrl+C once** to stop local collection and save the samples already
+received. Open `power-report.html` in your browser using its Open File command.
+The file is self-contained and works offline: no server, scripts, external
+resources, account or upload. It includes a table with named metrics, source
+paths, units, minimum/mean/maximum/last values, and available/unknown counts.
+Keyboard users can focus the table region to scroll through its columns.
+Charging states and entirely unavailable sensor families remain explicit.
+Use **Download JSON samples and summary** or **Download CSV samples** to save
+raw measurements. The HTML also embeds those measurements; review it before
+sharing. No automatic browser launch occurs.
+
+HTML sessions are limited to `count × interval <= 600` seconds, with a 30-second
+transport allowance and at most twelve seconds of local child/pipe cleanup. The default
+12 samples at five-second intervals take about 55 seconds. Existing output files
+are never overwritten; choose a new filename for each run. `--html` cannot be
+combined with `--csv`. The desktop flow below uses the same sampler and renderer.
+
+Stop, timeout, SSH failure or a smoke-test lock marks the report incomplete;
+earlier received samples remain downloadable. Exit status is 75 for incomplete
+reports, 0 for completion. A connection that cannot start may instead return 1
+without an HTML file. Empty reports clearly show zero samples, not a successful
+measurement. If saving the file fails, received JSON is printed on stdout as a
+recovery path. Do not treat a partial report as a full baseline.
+
+Stopping terminates only this command's local SSH child. It sends no remote
+process-control command. The bounded remote Python reader exits when it next
+writes to the closed connection (normally at the next sample, up to one interval
+later); it can still read sensors before discovering the disconnect. Stop is
+not an immediate headset-side cancellation guarantee. The reader still checks
+the smoke-test lock before every sample. No lock is acquired or removed by this
+flow, and no power, thermal, service, password or security controls are exposed.
+
+## Desktop Tools → Power & heat report
+
+In the packaged desktop app, connect to an already paired Frame, open **Tools →
+Power & heat report**, choose **1 minute** (12 samples) or **5 minutes** (60 samples),
+and select **Start observation**. Samples arrive every five seconds, starting at
+zero (about 55 or 295 seconds total). Progress shows received samples and the
+original headset alias. There is at most one observation per local app server;
+viewing progress never starts another SSH connection. No terminal, checkout,
+extra dependency or password is needed.
+
+Use **Stop and keep samples** to end local collection. Disconnect, timeout,
+app shutdown or switching to another headset also ends collection. Switching
+network addresses for the same headset does not retarget an existing observation:
+it keeps its captured SSH route and may finish incomplete if that route fails.
+As with the CLI, only the owned local SSH child is terminated. The remote reader
+is bounded and discovers a closed connection on its next write. Desktop sessions
+have a 30-second transport allowance and bounded child cleanup. Stream lines are
+limited to 262,144 characters, sample events to the requested count, and the receive queue
+to count + 2 events; desktop SSH stderr is discarded rather than stored unbounded.
+The existing smoke lock is checked locally before start and remotely before each
+sample; this feature never creates, bypasses or removes that lock.
+
+**Download HTML report**, **Download JSON** and **Download CSV** save local
+snapshots through the browser/app download mechanism. Open the downloaded HTML
+in your browser to view the offline table and its embedded JSON/CSV downloads.
+Snapshots taken before completion explicitly say incomplete. Desktop CSV includes
+`collection.state`, `collection.requestedSamples` and `collection.receivedSamples`
+metadata rows with the original headset alias in the source column, even when no
+sensor sample arrived. CSV text fields, including the alias, are escaped if they
+begin with a spreadsheet formula prefix. JSON records the alias and device ID;
+HTML names the alias.
+
+Only the latest observation is retained in server memory, including partial
+samples after stop or disconnect. **Download before starting another observation,
+restarting the server or quitting the app**: those discard the previous report.
+Page reloads retain server state. Download requests include an observation ID, so
+an old page cannot silently download or stop a replacement observation. Reports
+are not uploaded or automatically opened, and may contain device identifiers,
+OS builds and sensor paths. Review before sharing. The phone-hosted UI does not
+support starting observations.
+
+## What it reads
+
+- Battery percentage, driver charging state, signed battery watts and battery
+  temperature, using the same parser as Frame Control's battery details.
+  Positive battery watts mean charging on the Frame fuel gauge; negative means
+  discharge. `Not charging` alone does not prove a charger is connected.
+- CPU utilization from `/proc/stat`; GPU clock from the known Frame devfreq path.
+- Named thermal zones in °C, with zone names retained. A thermal zone is not
+  automatically a CPU sensor; there is no inferred “CPU temperature” or safe
+  temperature threshold.
+- hwmon power channels, labels and driver names in watts. `vph` is the measured
+  system rail, not power at the wall. CPU `apc*` and GPU `gfx` rails are separate
+  readings; do not sum all channels as if they were independent power consumers.
+- Fan RPM and the Frame fan driver's raw `pwm1`. No generic percentage conversion
+  is assumed. The historical Frame driver reported a percent-like value of 41.
+- Named IIO board temperatures, PM8550B input/charge current in amps, and raw
+  VCNL4000 proximity if the account can read it. Raw proximity has no inferred
+  worn/unworn threshold.
+
+Each metric includes its unit, source path and availability state. Missing,
+unreadable or invalid values are JSON `null`, not zero. A missing sensor family
+is also listed in each sample's `unavailableGroups`; CSV adds unavailable group
+rows. Numeric zero remains a valid reading. The OS build is recorded per sample
+when `/etc/os-release` is readable; hostnames, addresses, machine IDs, process
+lists, logs, screenshots and application inventories are not collected.
+
+The JSON report contains raw samples and a summary per metric: available and
+unavailable counts, numeric minimum/maximum/arithmetic mean/first/last, or the
+observed charging states. Means exclude unavailable readings. They are sample
+means, not time-weighted energy or battery-runtime estimates. Different sample
+availability and intervals must be considered when comparing sessions.
+
+Numeric validity does not establish sensor accuracy. Historical readings
+already showed an apparently absent/broken right-display thermistor near
+−16 °C. This firmware also reports one charger-lite die sensor at −60 °C.
+Those raw numbers remain visible for diagnosis; neither should be used to
+infer cooling performance or safety. This tool does not diagnose heat, explain
+a spike, predict battery health, or promise power savings.
+
+## Safety and shared-device use
+
+Only file reads under `/proc`, `/sys` and `/etc/os-release` run on the Frame.
+The Python sources are sent on SSH stdin and not installed on the headset.
+There is no sudo, OpenVR initialization, service call, settings write, process
+control, journal query, wake, suspend or reboot. No daemon, telemetry upload or
+automatic measurement is added. Redirects above write only to your computer.
+The observer itself uses a little CPU and SSH traffic, so label baseline
+conditions and avoid interpreting very small changes as savings.
+
+The sampler checks `/tmp/frame-test.lock` on the computer before SSH, and on
+the Frame before any probe and before each sample. If a smoke session is active,
+it exits 75. A lock appearing mid-run stops the next sample, retains earlier
+samples, sets `stopped`, and exits 75. It never removes or acquires another
+session's lock. This is an advisory check, not an atomic lease: a smoke session
+can start during a file read. Coordinate sessions and defer measurement when
+timing overlaps. It does not block someone else from starting a smoke test.
+
+SSH failures/timeouts return a nonzero exit and an explanation, without
+presenting a zero or an old report as a successful measurement. Fully missing
+sensors can still produce a successful report with explicit unavailable states.
+On a connection failure, partial samples buffered on the headset can be lost.
+
+## Evidence and remaining work
+
+Read-only checks on **2026-10-24**, SteamOS **0.5.6**, build
+**20261015.6141207**, confirmed battery, CPU ticks, thermal zones, rail power,
+fan, GPU clock, board temperatures and charger current through the final
+sampler. Proximity was unavailable. Both JSON and CSV paths were exercised;
+see [the recorded results](evidence/power-sampler-2026-10-24.json).
+No smoke lock was present at the preflight or sampler checks. No settings,
+services, application state or device files were changed. This short run is
+a parser/transport check, not a controlled baseline or a worn-headset test.
+
+The original planning document is in commit `fe132e3` (2026-09-29). It recorded
+an off-head, charging idle baseline of about 4.71 W, CPU zones around 40–45 °C,
+and about 8,350 fan RPM on build 20260925.6191901. Those conditions and firmware
+differ from the current check; comparisons do not establish a regression.
+
+This change completes only the sampler portion of “Plan: leave it on, but
+cheaply.” Controlled worn/home-space, streaming/game load and unplugged
+baselines, and the cause of the 2026-09-28 95 °C spike, remain uninvestigated.
+Quiet mode, compositor changes, CPU/fan/charging changes and remote-wake tests
+are separate work. No controls are offered here. Follow the shared-device
+procedure in [testing.md](testing.md#headset-smoke-test) for future experiments.
+
+The accessible HTML export was checked on the same build on **2026-10-24**:
+three streamed samples, 91 metric summaries and 276 CSV data rows. Chromium
+preview checks at 1280 px and 390 px confirmed the table stays in its scroll
+region; both browser downloads matched the original samples. See
+[export evidence](evidence/power-export-2026-10-24.json). Ctrl+C retention and
+local process cleanup were tested with local subprocess fixtures, not on the
+real headset. Screen-reader, Windows and macOS checks were not performed.
+
+Offline validation:
+
+```sh
+python3 -m unittest discover -s tests -p 'test_power*.py' -v
+bash -n scripts/frame-power-sample.sh
+python3 -m py_compile scripts/frame_power_sample.py scripts/frame_power_report.py
+```
+
+Fixtures cover units, signed and zero values, missing/malformed/permission-denied
+readings, named/discovered channels, unknown charging state, CPU warmup,
+summary counts, CSV quoting, strict SSH transport and smoke-lock interruption.
+
+Export fixtures also cover HTML escaping, download round trips, zero versus unknown,
+stream completion/failure, smoke-lock stop, timeout, Ctrl+C retention, local child
+cleanup, duration bounds and refusing to overwrite reports.
+
+Desktop validation on **2026-10-24** covered API start/stop, a synthetic browser
+observation with partial exports, shared-module resource staging under isolated
+Python and missing-resource build guards. A real Frame probe under this task's
+owned smoke lock correctly returned zero samples with an explicit incomplete
+reason; no successful live sensor baseline or native installer run was performed.
+See [desktop evidence and limitations](evidence/power-desktop-2026-10-24.json).

docs/privacy.md

@@ -203,9 +203,11 @@ and display name of the headset being tried (whole, whatever their case), and
 then any name ssh gives after "hostname", "host" or "to", become `<host>`; a Windows home folder's
 whole name (spaces and apostrophes included) becomes `<user>`, and ssh's
 whole `user@host:` field (spaces, `DOMAIN\user` and full domain names
-included) becomes `<user>@<host>:`; then the scrubbing below. A host name ssh mentions
-in some other wording can still get through, so check the log lines in **Show
-exactly what's included** before sending. A failure that repeats on every
+included) becomes `<user>@<host>:`; then the scrubbing below. Whole display names
+are hidden even when they contain a scrubber token such as `<host>` or overlap
+ssh's wording. Those overlaps also preserve redaction of URLs, home folders,
+and keys. A host name ssh mentions in some other wording can still get through,
+so check the log lines in **Show exactly what's included** before sending. A failure that repeats on every
 retry is written at most once every 5 minutes.
 
 Everything is scrubbed like error details and limited to what fits in the
@@ -287,3 +289,12 @@ then every 6 hours: the latest release's `update.json` on GitHub, or
 `api.github.com/repos/saphid/frame-control/releases/latest` if that fails.
 Those requests carry no id. To stop it, set
 `FRAME_CONTROL_NO_UPDATE_CHECK=1`. See [releasing.md](releasing.md).
+
+## Screenshots and clips
+
+Copying screenshots and Steam clips to your computer, by hand or with
+**Settings → Copy to this computer**, goes straight from the headset to your
+computer over the same SSH connection as everything else. Nothing is uploaded
+anywhere. What automatic copying has copied is listed, by file id, in
+`auto-sync.json` in Frame Control's data folder; see
+[recording.md](recording.md#copying-new-ones-automatically).

docs/recording.md

@@ -0,0 +1,183 @@
+# Recording and Steam clips
+
+Frame Control can record what the headset shows, with its sound, and save it as
+an `.mp4` on your computer. It can also export the clips and background
+recordings from Steam's own game recording, at any length, as one `.mp4` each.
+Both are on **Tools → Capture & Live**. Everything is saved to
+`~/Videos/SteamFrame`, next to the screenshots in `~/Pictures/SteamFrame`.
+Nothing needs installing on the computer or on the Frame: the work is done by
+the `ffmpeg` that SteamOS ships.
+
+**Recording and Steam clip export have each been tested on a headset.** On a Frame
+running SteamOS 0.5.6 (build 20261015.6141207), Record and Stop saved an
+8-second 1080p H.264 recording with AAC sound to the computer, Stop took about a
+second, and nothing was left running or stored on the Frame. A later test on
+that build created a saved clip with Steam's own recorder and exported it with
+Frame Control's production export function. The parts we're least sure of are
+listed under [What hasn't been checked](#what-hasnt-been-checked).
+
+## Record
+
+Press **Record** next to **Live**. The button turns into **Stop**, and a line
+under the viewer counts the time. Press **Stop**: the recording is finished on
+the Frame, converted to `.mp4` there (without re-encoding) and copied to
+`~/Videos/SteamFrame/rec-<date>-<time>.mp4`. The line says when it's saved.
+
+- **What's in it**: the same picture as **Live**, SteamVR's copy of the headset
+  view (one undistorted 1920×1080 eye, from `/dev/video99`), at 30 fps and
+  8 Mbit/s, encoded with x264 (the Frame's hardware encoder crashes `ffmpeg`).
+  The sound is what the headset plays: the monitor of PipeWire's default
+  output, read through its PulseAudio server (`-f pulse -i @DEFAULT_MONITOR@`).
+  The microphone isn't recorded.
+- **Without sound**: before each recording Frame Control checks for a fraction
+  of a second that `ffmpeg` can read that audio. If it can't, the recording goes
+  ahead as video only, and the page and the saved message say so.
+- **Limits**: a recording stops by itself after 20 minutes and is saved as if
+  you'd pressed Stop. It needs about 2.9 GB free on the Frame to start (room for
+  a full-length recording twice, while it's converted), and checks the space on
+  your computer before copying. One recording runs at a time.
+- **Where it waits on the Frame**: `~/.cache/frame-control/video/`, not `/tmp`,
+  which is a RAM disk on SteamOS. It's deleted once copied.
+- **If the connection drops or the app quits** while recording, the Frame
+  stops `ffmpeg` cleanly when the SSH channel closes: it types `q` into
+  `ffmpeg`'s input, as at its keyboard, and kills it if it's still there 10
+  seconds later. Not a signal: SteamOS's `ffmpeg` 7.0 catches SIGTERM and
+  SIGINT and carries on recording. A recording that was never copied is
+  deleted when the next one starts.
+
+Recording and **Live** can run together; both read the same device.
+
+## Steam clips
+
+**Steam clips** lists what Steam's game recording has kept on the Frame: saved
+clips and background recordings, newest first, with the game, length and size.
+**Export** joins one into a single `.mp4` in `~/Videos/SteamFrame`, named after
+its folder (for example `clip_620_20261020_202134.mp4`), however long it is.
+Steam's own export is reported to stop at about 60 seconds. Exports run in the
+background; ones already on your computer are marked.
+
+How it works: Steam keeps each recording as MPEG-DASH segments, one folder per
+recording session.
+
+```
+~/.local/share/Steam/userdata/<account>/gamerecordings/
+  video/bg_<appid>_<YYYYMMDD>_<HHMMSS>/                 background recording
+  clips/clip_<appid>_<YYYYMMDD>_<HHMMSS>/video/bg_<...>/ a saved clip
+      session.mpd
+      init-stream0.m4s  chunk-stream0-00001.m4s  chunk-stream0-00002.m4s ...
+      init-stream1.m4s  chunk-stream1-00001.m4s ...
+```
+
+Each stream's `init-stream` segment followed by its chunks, in number order, is
+a playable fragmented MP4 of that stream. On the Frame, `ui/frame_clips.py`
+builds those files and has `ffmpeg` put the video and audio into one `.mp4`
+with `-c copy`, so nothing is re-encoded and it takes seconds. The result is
+copied to the computer and deleted from the Frame. The export needs free space
+on the Frame of about twice the recording's size while it runs.
+
+The listing doesn't rely on the folder names: any folder under `clips/` or
+`video/` (up to four levels down) holding `init-stream*.m4s` counts. A stream
+missing its init segment or its chunks is left out. Missing chunk numbers are
+shown as "pieces missing"; the rest still exports.
+
+## Copying new ones automatically
+
+**Settings → Copy to this computer** copies new screenshots and Steam clips
+here on their own. It's off until you turn it on, with a switch each for
+screenshots and Steam clips. While a headset is connected, Frame Control looks
+about once a minute and copies what's new with the same code as **Save** and
+**Export**: screenshots to `~/Pictures/SteamFrame`, clips to
+`~/Videos/SteamFrame`.
+
+- **Only what's new.** It copies what you take after turning it on, so the
+  shots and clips already on the headset don't all arrive at once. **Copy
+  everything now** copies everything that isn't on this computer yet, once.
+- **Deleted stays deleted.** What it has copied is remembered, per headset, in
+  `auto-sync.json` in Frame Control's data folder, so a file you delete here
+  isn't copied again (**Copy everything now** would bring it back).
+- **Saved clips only.** Steam's background recording is a rolling buffer, not
+  something you chose to keep, so it isn't copied; export it by hand. A clip
+  Steam wrote to in the last 30 seconds is still being saved and waits for the
+  next look.
+- **It gives way.** It waits while an install, an export, a recording or
+  anything else is running on the headset, and stops between files if one
+  starts. While a copy is running, switching headsets waits for it, as it does
+  for an export. When the headset can't be reached it waits longer each time,
+  up to 15 minutes, and starts over once it answers.
+- **When this computer is full** (under 512 MB free, or a copy runs out of
+  space) it pauses and says so in Settings and above the lists. Free some space
+  and press **Resume**.
+- **With several headsets** it copies from the one you're connected to.
+
+Settings shows when it last checked, how many files it last copied and when,
+and the last problem it had. The screenshot and clip lists say when it's on.
+
+## For developers
+
+`ui/frame_clips.py` holds the logic, so other features can reuse it (automatic
+copying, in `ui/frame_autosync.py`, does):
+
+- `list_clips(run_frame)` and `export_clip(id, run_frame, run, fetch)` are the
+  computer's side; the server passes how to reach the Frame.
+- `list_recordings(userdata)` and `export(userdata, id)` are the Frame's side,
+  run as `python3 - list` / `python3 - export ID` with the file on stdin.
+- `Recorder` runs one recording from Start to the copy.
+- `parse_id` checks a clip id (`<account>/<clips|video>/<folder>...`, plain
+  names only, no `.` or `..`) before it reaches a path or a shell.
+
+The API, with the same guards as every other request:
+
+| Request | Does |
+|---|---|
+| `GET /api/record` | The recording's state: `idle`, `starting`, `recording` (with `elapsed`, `audio`, `limit`), `stopping`, `saving`, `saved` (with `file`) or `failed` (with `error`) |
+| `POST /api/record {"action": "start"\|"stop"}` | Start or stop |
+| `GET /api/clips` | Steam's recordings on the Frame, each with `saved` |
+| `POST /api/clips/export {"id"}` | Starts an export; poll `/api/job` |
+| `POST /api/open {"what": "videos"}` | Opens `~/Videos/SteamFrame` |
+| `GET /api/autosync` | Automatic copying: `screenshots`, `clips`, `since` (the watermark), `checked`, `copied`, `copied_time`, `error`, `paused`, `waiting` (clips still being written) |
+| `POST /api/autosync {"action": "settings", "screenshots", "clips"}` | Turn either on or off; turning it on sets `since` to now |
+| `POST /api/autosync {"action": "now"\|"resume"}` | Copy everything not here yet, once; or resume after running out of space |
+
+They aren't available when the server runs on the Frame itself (the iPhone
+app), since they save to a computer.
+
+Tests: `tests/test_clips.py`, and `tests/test_autosync.py` for automatic
+copying (with a fake headset). They run the recording's shell under bash with a
+stand-in `ffmpeg`, so Stop, the time limit and the clean-up are tested as they
+run on the Frame. Where `ffmpeg` is installed, they also make a 65-second DASH
+recording with Steam's file names and export it with the real `ffmpeg`.
+
+## Real Steam clip verification and remaining checks
+
+On 2026-10-24, v0.4.15 on build `20261015.6141207` recorded a ten-second
+reserved test session through Steam's own game recorder, saved it as a clip,
+then exported it with `frame_clips.export_clip`, the same implementation used
+by the desktop API. The 159,829-byte MP4 decoded completely: 10.29 seconds,
+1920×1080 H.264 video and stereo AAC audio (SHA-256
+`f8a476eefb2bde7ba5cb464632ec9b952eea3ab1610b5bed2098bf1f11d62cf1`).
+All 616 decoded video frames and the decoded audio matched Steam's source
+segments. Recording mode was restored
+to off; the reserved title and its processes were removed, the shared test lock
+was released, and the battery remained at 99%. The Steam source clip was kept.
+
+The inspected frame is nearly black in both Steam's source and the export, so
+this establishes file creation and faithful export, **not visible gameplay
+capture**. On v0.4.16, the literal desktop **Export** button was also clicked
+against that retained real Steam clip in the source UI on lxso2. The job
+completed and saved `~/Videos/SteamFrame/clip_13009719723623972864_20261024_072115.mp4`;
+its 159,829 bytes and SHA-256 matched the previously decoded export exactly.
+The temporary server stopped, the shared device lock was released, and the
+headset remained in Game Mode at 99% battery. See
+[`docs/evidence/clip-gui-export-2026-10-24.json`](evidence/clip-gui-export-2026-10-24.json)
+for the narrow proof. This did not exercise the packaged desktop installer.
+Remaining checks include:
+
+- Perceptual audio/video sync and audible content. Frame Control's separate
+  **Record** path stamps camera and audio inputs with the wall clock because
+  they otherwise count from different clocks.
+- Long saved clips, trims starting partway through a Steam recording, and the
+  packaged desktop app's **Export** button. One real saved clip's directory
+  layout was checked; the parser remains deliberately loose for other layouts.
+- How much x264 at 1080p30 costs the Frame while a game is running.
+- Automatic copying: that 30 seconds without a write is a safe sign Steam has
+  finished saving a clip, and how a once-a-minute listing feels on the Frame.

docs/recovery-and-images.md

@@ -4,6 +4,9 @@ Where to get the Steam Frame's operating system, what's inside it, and how to
 run it for testing without the headset. For recovering a Frame that won't boot,
 see the boot menu and boot-loop entries in
 [how-the-frame-works.md](how-the-frame-works.md#facts-worth-knowing).
+To keep your game saves, settings and Android app data through a factory reset
+(`Erase User Data`) or a re-image, and to get out of Desktop Mode, see
+[backup-and-recovery.md](backup-and-recovery.md).
 
 ## Downloads
 

docs/releasing.md

@@ -14,7 +14,10 @@ count. So a build reaches people only when you publish it, after testing it.
 
    `.github/workflows/release.yml` builds macOS, Windows and Linux, and
    attaches everything to a **draft** release for that tag. Nobody is
-   offered a draft.
+   offered a draft. Editing a draft while installers are uploading can make
+   GitHub temporarily show its tag as `untagged-…`. The workflow finds that
+   draft by its exact version title, restores the tag association and retries
+   the affected upload; it refuses ambiguous matches.
 
 2. Download the draft's installers and test them. An installed copy of the
    previous version won't offer the draft, so install it directly.

docs/scripts.md

@@ -7,6 +7,10 @@ run on Linux. On Windows, use the app.
 
 ## Minimum typing on the headset
 
+If setup or pairing fails, run `scripts/frame-doctor.sh` from this checkout.
+It checks existing SSH access without requesting passwords, pairing or applying
+repairs. See the [Frame doctor guide](frame-doctor.md) for results and next steps.
+
 Valve's own developer docs say SSH, ADB, and RDP are all turned on through a
 **UI toggle**. You don't need a terminal, `passwd`, or `systemctl`. The only
 thing you type on the headset is a password you choose.

docs/sideloading.md

@@ -30,7 +30,8 @@ it.) A dialog shows:
 
 Install copies it to the Frame and registers it with Steam; progress shows in
 the bar and the activity log. **Sideloaded titles** lists what's installed,
-with Launch and Remove. **Copy to ~/Downloads instead** keeps the old
+with Launch, Remove and, for a game that has stopped responding, **Force
+quit…** in its ⋯ menu ([how](steam-games.md#force-quitting-a-running-game)). **Copy to ~/Downloads instead** keeps the old
 behaviour for a zip that isn't a game.
 
 From a terminal:

docs/steam-games.md

@@ -101,6 +101,62 @@ Store search uses `store.steampowered.com/api/storesearch/?term=…&cc=…`. It
 returns nothing without `cc`, so Frame Control takes the country from
 `SteamClient.User.GetIPCountry()` on the Frame.
 
+## Force quitting a running game
+
+**Running now**, at the top of Games, lists what's running on the Frame: Steam
+games, sideloaded titles, non-Steam shortcuts and Android apps. A game's library
+tile, a sideloaded title's ⋯ menu and the Control Center's **Force quit a game**
+card have **Force quit…** too. Each asks first ("Unsaved progress will be
+lost"); from a game's own menu it checks that the game is running and says so if
+it isn't. SteamVR (app 250820, and its beta 1009850) is never listed or quit:
+on the Frame it shows the headset view, so quitting it isn't a way out of a game.
+
+`ui/frame_running.py` does the work on the Frame, piped over SSH with
+`frame_steam.py` as its DevTools client:
+
+```sh
+scp ui/frame_steam.py ui/frame_running.py frame:/tmp/
+ssh frame 'python3 /tmp/frame_running.py list'       # {"running": [{appid, gameid, name, kind, ...}]}
+ssh frame 'python3 /tmp/frame_running.py quit 620'   # {"name", "method", "message"}
+```
+
+1. **What's running.** Steam starts every game, shortcut and devkit title under
+   its `reaper`, as `reaper SteamLaunch AppId=<id> -- <command>`, and the reaper
+   stays the parent of the game's processes. So a running game is one of your
+   own processes whose program is named `reaper`, with `SteamLaunch` and an
+   `AppId=` before `--`; the game is that reaper's process tree. Steam's own list
+   (`SteamUIStore.RunningApps`) and Android apps whose Lepton container is up
+   (`podman ps`) are added. Names come from `appStore`, else the app manifest,
+   the Android app's `meta.json` or the devkit title's folder.
+2. **Steam first.** `SteamClient.Apps.TerminateApp(<game id>, false)`, the
+   call Steam's own Stop makes for Android apps ([vr-apks.md](vr-apks.md)). The
+   game id is the appid, or `(appid << 32) | 0x02000000` for a non-Steam
+   shortcut. An Android app's container is also stopped, as the Apps tab's Stop
+   does (`podman stop -t 5 lepton-steamlaunch-<instance>`).
+3. **Then signals.** If the game's processes are still there after 5 seconds,
+   they get SIGTERM, deepest first; whatever is left 3 seconds later gets
+   SIGKILL, the reaper last, so nothing it holds is orphaned unsignalled. A pid
+   is only signalled while its start time still matches, so a reused pid is safe.
+
+Nothing is found by name. These are never signalled, even inside a game's tree:
+init, the helper itself and every process above it (the SSH session), other
+users' processes, and anything named `steam`, `steamwebhelper`, `gamescope`,
+`gamescope-wl`, `gamescopereaper`, `gamescope-session`, `sshd`, `sshd-session`,
+`ssh-agent`, `systemd`, `dbus-daemon`, `dbus-broker`, `pipewire`,
+`pipewire-pulse`, `wireplumber`, `plasmashell`, `kwin_wayland`, `kwin_x11`,
+`Xwayland`, `sddm`, `vrserver`, `vrcompositor`, `vrmonitor`, `vrdashboard`,
+`vrwebhelper` or `vrstartup`, with everything under them.
+
+**Not tested on a headset.** The reaper command line is how Steam launches games
+on Linux desktops and the Steam Deck, **inferred** for the Frame.
+`SteamUIStore.RunningApps` comes from Steam's client code as plugin loaders use
+it and hasn't been seen on the Frame's build; without it, the reapers alone
+decide. `TerminateApp` with a shortcut's game id is the call Steam's Stop was
+seen making for an Android app (docs/vr-apks.md); for Steam games it is
+**inferred**. Unit tests (`tests/test_force_quit.py`) cover the parsing, the
+process selection and the escalation; the fake Frame launches its games under a
+stand-in `reaper` so `tests/e2e/test_running.py` force quits a real process tree.
+
 ## Not yet checked
 
 - Free-to-play games: `steam://install` should stop at state 3 (free license)

docs/streaming.md

@@ -144,7 +144,7 @@ capture it.
 
 ## Input: type and point in the Frame from the Mac or iPhone
 
-**Built: Home → Keyboard and trackpad**, in every version of Frame Control
+**Built: Home → Type on the headset** (or press `T`), in every version of Frame Control
 (Mac, Windows, Linux, iPhone and iPad), with nothing to install on the device
 you're holding. On a phone the panel is a trackpad (drag to move, tap to click,
 two fingers to scroll, two-finger tap to right-click) plus a text field that
@@ -285,6 +285,13 @@ How (**verified 2026-09-29**, SteamOS 0.4.1, build 20260925.6191901):
   [#73](https://github.com/saphid/frame-control/issues/73) (SteamOS 0.4.5, desktop
   open but not found). The likely cause there was the page itself: a second
   `loadPanels` (the panel switcher's) replaced the Desktop view's, fixed in #84.
+  If the `GAMESCOPE_FOCUSABLE_WINDOWS` property cannot be read, discovery now
+  reports that the panel list is unreadable and whether a panel is open is
+  unknown. A failed X connection or missing property is not evidence that the
+  desktop is closed. Check that SteamVR is running, retry or use Headset view;
+  if it persists, report the exact message and SteamOS version. The confirmed
+  empty-list advice is retained when the property is present but empty.
+  [2026-10-24 investigation and verification limits](evidence/panel-discovery-2026-10-24.md).
 - Tested from the iPhone app (Simulator): a tap on the Desktop view focused a
   text box in the panel and the text field typed into it; a trackpad move went
   exactly (+40, +25).

docs/testing.md

@@ -12,6 +12,12 @@ A fourth, a SteamOS VM, may come later ([issue #6](https://github.com/saphid/ste
 
 ## Unit tests
 
+The read-only power/heat sampler has fixture and transport tests in
+`tests/test_power_sample.py`. Run
+`python3 -m unittest discover -s tests -p test_power_sample.py -v`.
+See [power-and-heat.md](power-and-heat.md) for sampling, smoke-lock behavior and
+real-device verification limits.
+
 ```sh
 python3 -m unittest discover -s tests
 ```
@@ -44,6 +50,23 @@ them on macOS, Windows and Linux. They don't pick up `tests/e2e`.
 
 ## The fake Frame
 
+Frame doctor has focused offline tests in `tests/test_frame_doctor.py` and
+fake-Frame fault tests in `tests/e2e/test_doctor.py`:
+
+```sh
+python3 -m unittest discover -s tests -p test_frame_doctor.py -v
+scripts/e2e.sh test_doctor
+```
+
+They cover privacy filtering, host-key preservation, restart safety and missing
+journal evidence, plus asleep, full-title-storage, SSH/devkit-off and missing-key
+faults. The plan/report tests cover exact-evidence advice, blocked plans,
+private exclusive baselines, malformed input, target mismatches and comparisons
+without repair claims. The fake-Frame storage test records a full-disk baseline,
+clears only the fake fault and compares a fresh run. The fake's doctor-only
+`systemctl show` responses assume stable restart counters and inactive keep-awake; unsupported queries fail. These tests do not
+exercise a real SteamOS user manager or touch a headset.
+
 `tests/fakeframe/` builds a container that stands in for the headset, and a
 second one for the computer Frame Control runs on. `scripts/e2e.sh` builds
 both, starts them with `docker compose`, runs `tests/e2e` in the host
@@ -76,8 +99,8 @@ its guards want.
 | `sshd` with key and password logins, `rsync`, `python3` | Real |
 | Valve's steamos-devkit-service on port 32000 and its hooks, vendored unmodified in `tests/fakeframe/steamos-devkit-service` | Real; only its `dbus` import (for mDNS through systemd-resolved) is a stand-in that logs the registration |
 | Valve's devkit-utils, copied over by Frame Control itself | Real |
-| **fakesteam**: `~/.steam/steam.pid`, `steam.token` and the `steam.pipe` FIFO; answers `approve-ssh-key`, `create-shortcut`, `run-game`, `list-shortcuts` and `delete-shortcut` with the response files devkit-utils waits for; takes `steam://rungameid`, `install` and `store` URLs | Fake |
-| DevTools on `127.0.0.1:8080` with a `SharedJSContext` target. The JavaScript Frame Control sends runs for real in Node against stand-in `SteamClient`, `appStore` and `downloadsStore` objects (`cef_shim.js`), so async functions, optional chaining and `Map`s behave as in Steam's CEF | The JS engine is real; the objects are fake |
+| **fakesteam**: `~/.steam/steam.pid`, `steam.token` and the `steam.pipe` FIFO; answers `approve-ssh-key`, `create-shortcut`, `run-game`, `list-shortcuts` and `delete-shortcut` with the response files devkit-utils waits for; takes `steam://rungameid`, `install` and `store` URLs. Games it really runs start under a stand-in `reaper SteamLaunch AppId=<id> -- <command>` (bash with that command line), so force quit finds a real process tree | Fake |
+| DevTools on `127.0.0.1:8080` with a `SharedJSContext` target. The JavaScript Frame Control sends runs for real in Node against stand-in `SteamClient`, `appStore` and `downloadsStore` objects (`cef_shim.js`), so async functions, optional chaining and `Map`s behave as in Steam's CEF. `SteamUIStore.RunningApps` lists launches that haven't exited; `TerminateApp` ends only launches that never ran a process, so a running program needs Frame Control's signals | The JS engine is real; the objects are fake |
 | `steam`, `wpctl`, `flatpak`, `podman`, `nmcli`, `qdbus6`, `gamescopectl`, SteamOS's `steamos-enable-sshd` helper, and Lepton's launcher | Stubs that record their calls |
 | Battery, charger and thermal zones under `/sys/class` | Files the supervisor writes. `/sys` is read-only in a container and Docker's AppArmor profile refuses writes under it, so each folder is a volume mounted twice: over `/sys/class/...` for `frame_status.py` to read, and under `/var/lib/fakeframe/sys` for the supervisor to write |
 | `vrserver` and `plasmashell` | Renamed `sleep` processes, so the status page and the clipboard find them |
@@ -164,6 +187,43 @@ does). A cleanup that fails counts as a failed step. Results go to
 screen; it exits 0 when every step passed, 1 if one failed, 2 if the headset
 isn't reachable.
 
+Smoke process cleanup runs before and after title removal and during the
+initial/final leftover sweeps. It targets only the reserved `fc_smoke_arm64`,
+`fc_smoke_x86_64`, `fc_smoke_exe` IDs and their legacy `fc-smoke-` equivalents.
+On the target, `tests/smoke/stop_processes.py` requires the SSH user's uid and
+an exact title directory in `/proc` cwd/exe or an individual absolute command
+argument; similarly named folders and shell command substrings do not count.
+Deleted cwd/exe paths still count, so a process left after file removal can be
+found. It sends SIGTERM, waits up to three seconds, then uses SIGKILL with
+another three-second bound, rescanning for survivors. PID handles prevent PID
+reuse from signalling another process. Linux Python 3.9+ with pidfd support
+is required; missing support, signal errors and survivors fail the
+cleanup step. Stopped PIDs are recorded in the results JSON.
+If the initial leftover cleanup fails, the run skips installs and pairing and
+records the failure instead of overwriting an active test title.
+
+This deliberately does not stop shared Wine/Proton services by name or prefix,
+Steam, SteamVR, process groups or arbitrary descendants. A process that drops
+all title-path evidence cannot safely be attributed and is outside this
+check. Unreadable `/proc` fields provide no ownership evidence; other readable
+fields are still checked, and a wholly unattributable process is left alone.
+Real Frame verification, 2026-10-24, SteamOS build `20261015.6141207`: the
+fixed Python smoke entry point passed all 13 steps under the shared device lock.
+The `fc_smoke_exe` launch ran under Proton Experimental (ARM64), and its
+remove step stopped five test-owned wrapper/Proton PIDs before removing the
+title; the following process sweep found none. The final cleanup found no
+test titles or processes, the test desktop was closed, and the battery
+remained at 99%. The `scripts/frame-smoke.sh` zsh wrapper could not run
+on lxso2 because zsh is absent; `python3 tests/smoke/frame_smoke.py` ran
+the same entry point instead.
+The local regression suite runs real Linux processes in temporary fake title
+directories (including deleted folders and a TERM-resistant wrapper); it checks
+exit, escalation and survival of unrelated processes without SSH or a headset:
+
+```sh
+python3 -m unittest discover -s tests -p test_smoke_cleanup.py -v
+```
+
 `--pair` asks the devkit service to pair a new RSA key, which needs someone
 in the headset to open **Settings → Developer → Pair new host** and approve
 it; the key is checked and then taken out of `authorized_keys` again.
@@ -187,11 +247,36 @@ refuses ids with a hyphen (`missing/invalid arguments`), which the fake had
 accepted. The fake now refuses them the same way, and Frame Control makes ids
 Steam accepts.
 
+## PC panel host tests
+
+PC in the headset (Experimental, Windows only). `tests/test_pcview.py` checks
+that only Windows gets the PC host and that it starts nothing until turned on,
+the Tools link and card wording, source-bound tickets, reconnect/Stop
+revocation, input release, source-coordinate mapping and use of the existing
+panel launcher. `tests/test_pc_controller.py` checks the C rate controller
+against a frozen trace of the Mac's Swift one.
+
+The `PC host libraries` workflow builds the native adapter on Windows (and
+the unshipped Linux adapter on Ubuntu x64 and ARM64), then runs a real x264
+synthetic stream through the HTTP/WebSocket agent. x264 is GPL, so only these
+CI builds include it (`desktop/build.py --with-x264`); the release workflow
+tests the installer's own bundle with its bundled Python and checks x264 isn't
+in it. `FRAME_PC_REQUIRE_NATIVE=1` and `FRAME_PC_REQUIRE_X264=1` make a missing
+bundle or encoder fail CI instead of skipping.
+
+These automated CI checks do not capture a desktop, exercise Media Foundation
+or a GPU, or check laser alignment. A [Windows test VM](#windows-test-vm) run
+on 2026-10-24 captured its actual desktop with Desktop Duplication, encoded
+with Media Foundation and streamed to a real Frame. It found MSYS2 disables
+WGC: an element name alone does not prove its optional capture properties
+exist. Native property-probe tests and source-selection regressions now cover
+that boundary. [Dated evidence and limits](evidence/windows-vm-2026-10-24.md);
+[what's verified](pc-in-headset.md#whats-verified).
+
 ## Windows test VM
 
-The unit tests run on Windows in CI, but the app itself doesn't. Anything that
-depends on the Windows desktop (Remote Desktop, the installer, the bundled
-Python, file dialogs) needs a real Windows machine. This is a Windows 11 VM in a
+Windows CI runs the unit tests and checks installer contents. Desktop capture,
+installer launch and interactive behavior need a Windows machine. This is a Windows 11 VM in a
 [dockur/windows](https://github.com/dockur/windows) container on a Linux machine
 with KVM, driven from the Mac with `scripts/windows-vm.sh`.
 
@@ -211,7 +296,14 @@ Setting it up, once, on the Linux machine:
   `~/.ssh/id_ed25519_winvm` on the Mac) in
   `C:\ProgramData\ssh\administrators_authorized_keys`.
 - Give it 4 cores, 8 GB of memory and a 32 GB disk. That's enough for the app
-  and the tests.
+  and the tests. Inspect free memory/disk, KVM access and existing VMs before
+  starting; leave other VMs alone. The first install can take tens of minutes
+  (the 2026-10-24 run took about 16 minutes to reach the desktop), rather than
+  the 1–2 minute startup of an already installed guest.
+- For PC streaming, check the actual bundled capture properties. MSYS2's
+  GStreamer build disables WGC: this app falls back to Desktop Duplication for
+  whole screens and explains why individual windows are unavailable. A VM
+  capture test does not prove physical GPU encoding or laser alignment.
 
 Using it, with `WINVM_HOST` set to the Linux machine's ssh alias:
 
@@ -267,6 +359,17 @@ connect it to the Frame and follow Remote Desktop through to the Frame's
 desktop ([what it does](streaming.md#a-see-and-control-the-frame-from-the-mac)).
 `frame-key` left `authorized_keys` byte-for-byte as it was.
 
+## Force quit
+
+`tests/test_force_quit.py` feeds `ui/frame_running.py` made-up process tables:
+the `reaper SteamLaunch AppId=` parsing, naming from Steam, manifests, Android
+`meta.json` and devkit folders, and a Frame's worth of Steam, gamescope, SteamVR,
+sshd and session processes that must never be signalled. Processes that ignore
+SIGTERM, survive SIGKILL or exit and have their pid reused check the escalation.
+The Control Center's confirmation, duplicate and headset-switch handling run in
+`tests/control_center.cjs`. `tests/e2e/test_running.py` force quits real process
+trees on the fake Frame. None of it has run on a headset.
+
 ## Owned media player
 
 `tests/test_media.py` covers layout evidence and overrides, OU eye ordering,
@@ -314,3 +417,47 @@ Chromium rendering and the same helper through HTTP. Close the switcher after
 testing. [The recorded device checks](panels.md#frame-controls-panel-switcher)
 cover actual focus, HTTP guards and an OpenXR sample transition, and separately
 identify the unverified Steam-game, spatial layout, reboot and laser behaviors.
+
+## Backup and recovery kit
+
+`tests/test_backup.py` runs the headset-side script `ui/frame_backup_remote.py`
+for real against a temporary folder laid out like the Frame's home, with only
+SSH faked: path selection and the secrets it must never copy, the manifest and
+checksums, restore checks after a reset, restore writing only its own files,
+unsafe archives and backup names, and the exact Game Mode command.
+`tests/e2e/test_recovery_kit.py` backs up and restores a Proton save on the fake
+Frame through the server. See [backup-and-recovery.md](backup-and-recovery.md#verification).
+A full backup and an identical-file Proton save restore were checked on a
+real Frame running build `20261015.6141207`; an after-reset restore and
+Android data restore remain unverified. See the linked device evidence.
+
+## Game storage
+
+`python3 -m unittest discover -s tests -p test_storage.py -v` exercises the
+read-only metadata probe, guarded HTTP endpoint and Node renderer/navigation
+regressions. All headset reads are temporary fixtures or mocked SSH. See
+[game storage](game-storage.md#verification-and-limits) for coverage and device
+verification limits. This suite does not move games or contact a headset.
+
+## Battery monitoring
+
+`tests/test_battery.py` covers real file parsing with temporary sysfs-like
+files, source preference, missing/invalid sensors and permission errors.
+`tests/control_center.cjs` covers charging states and optional health fields,
+alongside existing stale/offline handling. No headset is used. See
+[battery monitoring](battery-health.md) for sources, units and limitations.
+
+## Host-key recovery presentation
+
+`python3 -m unittest discover -s tests -p test_link_ui.py -v` runs the page's
+connection/banner/selection functions in Node and checks the recovery CSS guard.
+`test_link.py` covers connection failures and short probe reasons with fake SSH
+and local sockets. Neither suite uses a real headset.
+
+Browser verification on 2026-10-24 used the current page's markup, styles and
+recovery renderers with synthetic changed-key state and two headsets at
+1280×800. It caught a later `.item .s` rule overriding the earlier wrapping
+rule, which the original source-only assertion missed. Check computed wrapping,
+the complete explanation, tooltip punctuation, Refresh bounds and selection
+after **Use this headset** when changing these styles. This fixture does not
+exercise Electron integration or a real SSH identity change.

ios/FrameControl/Web/WebShell.swift

@@ -55,6 +55,7 @@ struct WebShell: UIViewRepresentable {
         },
         notify: (message, request) => call("notify", { message, request }),
         readClipboard: () => call("readClipboard"),
+        writeClipboard: (text) => call("writeClipboard", text),
         setUpConnection: () => call("setUpConnection"),
         open: (what) => call("open", what),
         saveImages: (images) => call("saveImages", images),
@@ -143,6 +144,10 @@ struct WebShell: UIViewRepresentable {
                 replyHandler(true, nil)
             case "readClipboard":
                 replyHandler(UIPasteboard.general.string ?? "", nil)
+            case "writeClipboard":
+                guard let text = arg as? String else { return replyHandler(nil, "Expected text") }
+                UIPasteboard.general.string = text
+                replyHandler(true, nil)
             case "setUpConnection":
                 model.showSetup()
                 replyHandler(nil, nil)

scripts/frame-doctor.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Read-only diagnostics, repair plans and explicit local before/after reports; see docs/frame-doctor.md.
+set -euo pipefail
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+exec python3 "$root/scripts/frame_doctor.py" "$@"

scripts/frame-power-sample.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Read-only, bounded power/heat sampler. See docs/power-and-heat.md.
+set -euo pipefail
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+exec python3 "$root/scripts/frame_power_sample.py" "$@"

scripts/frame_doctor.py

@@ -0,0 +1,398 @@
+"""Read-only doctor. Also sent over SSH on stdin; never installed on the Frame.
+
+Only fixed summaries leave the probe: no raw journals, addresses, account IDs,
+process arguments, environment, key material or HTTP response bodies.
+"""
+import argparse
+import hashlib
+import json
+import os
+from pathlib import Path
+import re
+import shutil
+import socket
+import subprocess
+import sys
+import time
+
+SECTIONS = ('Boot and crash history', 'Wi-Fi', 'Displays and SteamVR',
+            'Steam and storage', 'Idle sleep and keep-awake', 'Remote wake',
+            'Lepton (Android)', 'Chromium XR', 'KDE Connect',
+            'Streaming and capture', 'Panels')
+
+
+def run(args, timeout=4, **kwargs):
+    try:
+        return subprocess.run(args, capture_output=True, text=True, timeout=timeout, **kwargs)
+    except (OSError, UnicodeError, subprocess.TimeoutExpired):
+        return None
+
+
+def command(*args):
+    r = run(list(args))
+    return r.stdout if r is not None and r.returncode == 0 else None
+
+
+def journal(*args):
+    # Even exit 0 can mean the account cannot see the system journal.
+    r = run(['journalctl', '--no-pager', '-q', '-n', '2000', *args])
+    if r is None or r.returncode or r.stderr.strip() or not r.stdout.strip():
+        return None
+    return r.stdout
+
+
+def snapshot():
+    values = []
+    for unit in ('steam', 'steamvr'):
+        s = command('systemctl', '--user', 'show', unit + '.service',
+                    '-p', 'NRestarts', '--value')
+        if s is None or not s.strip().isdigit():
+            return None
+        values.append(int(s.strip()))
+        p = Path('/run/user') / str(os.getuid()) / (unit + '-short-session-tracker')
+        try:
+            values.append(p.stat().st_size)
+        except FileNotFoundError:
+            values.append(0)
+        except OSError:
+            return None
+    return values
+
+
+def guard():
+    first = snapshot()
+    time.sleep(2)
+    second = snapshot()
+    if first is None or second is None:
+        return 'unknown'
+    if any(b > a for a, b in zip(first, second)):
+        return 'loop'
+    if first != second:
+        return 'unknown'  # counters reset or tracker replaced during the sample
+    if second[1] or second[3]:
+        return 'risk'  # avoid a long run even if a short sample missed the loop
+    return 'stable'
+
+
+def signal_check(text, pattern, problem, healthy):
+    if text is None:
+        return ['UNKNOWN', 'Evidence unavailable; consult the runbook locally.']
+    return ['WARN', problem] if re.search(pattern, text, re.I) else ['OK', healthy]
+
+
+def storage():
+    # devkit-game may be a separate mount (including in the fake Frame).
+    try:
+        paths = [Path.home()]
+        games = Path.home() / 'devkit-game'
+        if games.exists():
+            paths.append(games)
+        free = min(shutil.disk_usage(p).free for p in paths)
+        if free < 16 * 1024**2:
+            return ['BROKEN', 'Less than 16 MiB free; review storage in Frame Control before installing.']
+        if free < 256 * 1024**2:
+            return ['WARN', 'Less than 256 MiB free; review storage before large installs.']
+        return ['OK', 'Home and title storage have at least 256 MiB free.']
+    except OSError:
+        return ['UNKNOWN', 'Storage could not be read.']
+
+
+def probe():
+    state = guard()
+    if state != 'stable':
+        return {'guard': state, 'checks': []}
+    kernel = journal('-b', '-k', '--since=-10min')
+    recent = journal('-b', '--since=-10min')
+    previous = journal('-b', '-1', '-k')
+    crashes = command('coredumpctl', 'list', '--no-pager', '--since=-1d')
+    checks = []
+    boot = signal_check(previous, r'Unable to handle kernel|Internal error|Kernel panic',
+                        'Previous boot has a kernel oops; this alone does not prove an unclean reset.',
+                        'No kernel-oops signature in the sampled previous boot.')
+    if crashes is None and boot[0] != 'WARN':
+        boot = ['UNKNOWN', 'Crash history unavailable; inspect boot history locally.']
+    elif crashes is not None and boot[0] != 'WARN' and re.search(r'SIG(SEGV|ABRT)|\b(SEGV|ABRT)\b', crashes):
+        boot = ['WARN', 'Crash records exist in the last day; inspect locally using the runbook.']
+    checks.append(boot)
+    wifi = command('nmcli', '-t', '-f', 'DEVICE,TYPE,STATE', 'device')
+    checks.append(signal_check(wifi if wifi and 'wlan0:wifi:' in wifi else None, r'wlan0:wifi:(unavailable|disconnected|failed)',
+                               'Wi-Fi is unavailable or disconnected; check Steam Settings > Internet. Never reload ath12k.',
+                               'No unavailable/disconnected wlan0 reported; other interfaces may differ.'))
+    checks.append(signal_check(kernel, r'wait for video done',
+                               'Display timeouts observed; follow display recovery before touching Steam.',
+                               'No display-timeout signature in recent kernel sample.'))
+    if checks[-1][0] != 'WARN' and recent is not None and re.search(r'left-over process|steamvr.service: Failed|!modifiers.empty', recent):
+        checks[-1] = ['WARN', 'SteamVR/session failure signature observed; inspect locally before restarting anything.']
+    disk = storage()
+    if disk[0] == 'OK' and not (Path.home() / '.local/share/Steam/.install-complete').exists():
+        disk = ['WARN', 'Steam install marker is missing; do not restart Steam for diagnosis. Consult the runbook.']
+    checks.append(disk)
+    awake = command('systemctl', '--user', 'show', 'fc-keep-awake.service', '-p', 'ActiveState', '--value')
+    checks.append(['UNKNOWN', 'Keep-awake state unavailable.'] if awake is None or not awake.strip() else
+                  ['WARN', 'Keep-awake is active; leave it with its owner.'] if awake.strip() == 'active' else
+                  ['OK', 'Keep-awake is inactive; diagnostics do not inhibit sleep.'])
+    wow = command('iw', 'phy', 'phy0', 'wowlan', 'show')
+    checks.append(['UNKNOWN', 'WoWLAN state unavailable; remote wake is not verified.'] if wow is None else
+                  ['OK', 'WoWLAN is disabled; wake the headset with its power button.'] if 'WoWLAN is disabled' in wow else
+                  ['WARN', 'WoWLAN may be armed; review the runbook. Remote wake is not reliable.'])
+    checks.append(signal_check(recent, r'Listen failed for HOST TCP|binder_user_error|Clearing baked app data',
+                               'Android failure signature observed; inspect Lepton locally before retrying.',
+                               'No known Android failure signature in recent journal sample.'))
+    checks.append(signal_check(crashes, r'chromium|/chrome\b',
+                               'Chromium crash history found; update/relaunch the panel through its normal UI.',
+                               'No Chromium crash signature in available crash history.'))
+    kde = run(['pgrep', '-f', 'frame-control/kdeconnect/root/usr/lib/kdeconnectd'])
+    checks.append(['UNKNOWN', 'KDE Connect process check unavailable.'] if kde is None or kde.returncode not in (0, 1) else
+                  ['OK', 'KDE Connect process found.'] if kde.returncode == 0 else
+                  ['WARN', 'KDE Connect is not running; normal if keyboard/trackpad sharing is off.'])
+    checks.append(signal_check(crashes, r'ffmpeg',
+                               'Capture crash history found; consult software-encoder guidance in the runbook.',
+                               'No ffmpeg crash signature in available crash history.'))
+    checks.append(['UNKNOWN', 'Panel placement needs visual confirmation; open one panel at a time.'])
+    # A short sample is not proof that Steam is healthy. Recheck after collecting.
+    after = guard()
+    return {'guard': after, 'checks': checks if after == 'stable' else []}
+
+
+SSH_OPTIONS = ['BatchMode=yes', 'NumberOfPasswordPrompts=0', 'StrictHostKeyChecking=yes',
+               'UpdateHostKeys=no', 'CheckHostIP=no', 'ConnectTimeout=3', 'ConnectionAttempts=1',
+               'ControlMaster=no', 'ControlPath=none', 'ClearAllForwardings=yes',
+               'PermitLocalCommand=no', 'RemoteCommand=none', 'RequestTTY=no',
+               'ProxyCommand=none', 'ProxyJump=none', 'ForwardAgent=no', 'ForwardX11=no']
+
+
+def ssh_args(alias, host=None, identity=None):
+    args = ['ssh']
+    for opt in SSH_OPTIONS:
+        args += ['-o', opt]
+    if host:
+        args += ['-o', 'HostName=' + host, '-o', 'HostKeyAlias=' + identity]
+    return args + [alias]
+
+
+def failure(text):
+    # Never echo SSH stderr: it can contain addresses, paths or remote text.
+    if 'REMOTE HOST IDENTIFICATION HAS CHANGED' in text:
+        return 'SSH identity changed; use Devices > Check its key after verifying the headset. Do not delete known_hosts.'
+    if 'Host key verification failed' in text:
+        return 'SSH identity is untrusted; verify it through Set Up Connection or Devices > Check its key.'
+    if 'Permission denied' in text:
+        return "SSH key rejected; use Set Up Connection, then Developer > Pair new host in the headset."
+    return 'No SSH response; wake the headset, check the network/cable and enable Developer Mode.'
+
+
+def port_open(host, port):
+    try:
+        with socket.create_connection((host, port), timeout=2):
+            return True
+    except OSError:
+        return False
+
+
+def report(data):
+    state = data.get('guard')
+    if state != 'stable':
+        status = 'BROKEN' if state == 'loop' else 'WARN' if state == 'risk' else 'UNKNOWN'
+        message = {'loop': 'Counters are rising. Stop diagnostics; use the runbook health-check recovery procedure.',
+                   'risk': 'Health-check trackers contain failures. Deeper checks skipped; review the runbook before recovery.'}
+        print(status + ' Restart safety: ' + message.get(state, 'Cannot verify restart counters; deeper checks skipped for safety.'))
+        for i, label in enumerate(SECTIONS, 1):
+            print(f'UNKNOWN {i}. {label}: Skipped until restart safety is verified.')
+        return 1
+    checks = data.get('checks')
+    # Treat the remote endpoint as untrusted. Only accept pairs from our own
+    # fixed vocabulary by matching against the production probe's messages.
+    if not isinstance(checks, list) or len(checks) != len(SECTIONS):
+        print('UNKNOWN Probe: Incomplete diagnostic response; no raw output displayed.')
+        return 1
+    for check in checks:
+        if (not isinstance(check, list) or len(check) != 2 or check[0] not in ('OK', 'WARN', 'BROKEN', 'UNKNOWN')
+                or not isinstance(check[1], str) or check[1] not in MESSAGES):
+            print('UNKNOWN Probe: Unexpected diagnostic response; no raw output displayed.')
+            return 1
+    print('OK Restart safety: No rising counters during short samples; this is not a health guarantee.')
+    for i, (label, (status, message)) in enumerate(zip(SECTIONS, checks), 1):
+        print(f'{status} {i}. {label}: {message}')
+    return int(any(c[0] != 'OK' for c in checks))
+
+
+def valid_data(data):
+    """Validate before saving, comparing or deriving any recommendation."""
+    if (not isinstance(data, dict) or set(data) != {'guard', 'checks'}
+            or data.get('guard') not in ('stable', 'loop', 'risk', 'unknown')):
+        return False
+    checks = data.get('checks')
+    if data['guard'] != 'stable':
+        return checks == []
+    return (isinstance(checks, list) and len(checks) == len(SECTIONS)
+            and all(isinstance(c, list) and len(c) == 2
+                    and c[0] in ('OK', 'WARN', 'BROKEN', 'UNKNOWN')
+                    and isinstance(c[1], str) and c[1] in MESSAGES for c in checks))
+
+
+def repair_plan(data):
+    print('Repair plan (READ-ONLY): no commands executed; no automatic repair is available.')
+    if data['guard'] != 'stable':
+        print('BLOCKED: Restart safety is unverified or unsafe. Needs your hands: review the runbook health-check recovery with the headset user; do not restart services.')
+        return
+    # Each action needs the exact section, severity AND recognized evidence.
+    actions = {
+        (1, 'WARN', 'Wi-Fi is unavailable or disconnected; check Steam Settings > Internet. Never reload ath12k.'):
+            'Needs your hands: check Steam Settings > Internet. Do not reload ath12k.',
+        (2, 'WARN', 'Display timeouts observed; follow display recovery before touching Steam.'):
+            'Needs your hands: inspect the display in-headset and review display recovery before any Steam action.',
+        (3, 'BROKEN', 'Less than 16 MiB free; review storage in Frame Control before installing.'):
+            'Needs your hands: review Game storage and use Steam storage management after choosing what to keep; no files are deleted by doctor.',
+        (3, 'WARN', 'Less than 256 MiB free; review storage before large installs.'):
+            'Needs your hands: review Game storage before installing; choose any storage changes yourself.',
+        (3, 'WARN', 'Steam install marker is missing; do not restart Steam for diagnosis. Consult the runbook.'):
+            'Needs your hands: inspect Steam installation/extraction locally with the runbook. A missing marker does not authorize repair or restart.',
+        (4, 'WARN', 'Keep-awake is active; leave it with its owner.'):
+            'Leave keep-awake with its owner; do not take ownership or change idle settings.',
+    }
+    for i, (status, message) in enumerate(data['checks']):
+        if status == 'OK':
+            continue
+        action = actions.get((i, status, message))
+        if action is None:
+            action = ('Collect missing evidence locally; no repair is justified.' if status == 'UNKNOWN'
+                      else 'Review this signal locally with the runbook; it does not establish a safe automatic fix.')
+        print(f'PLAN {i + 1}. {SECTIONS[i]}: {action}')
+
+
+def compare(before, after):
+    print('Before/after diagnostics: observations only; changes do not prove repair or causation.')
+    print('Restart safety: ' + before['guard'] + ' -> ' + after['guard'])
+    if before['guard'] != 'stable' or after['guard'] != 'stable':
+        print('Comparison blocked: deeper checks were skipped in at least one sample; no improvement claimed.')
+        return
+    for i, label in enumerate(SECTIONS):
+        a, b = before['checks'][i], after['checks'][i]
+        detail = 'unchanged' if a == b else 'evidence changed'
+        print(f'{i + 1}. {label}: {a[0]} -> {b[0]} ({detail})')
+        if a != b:
+            print('  Before evidence: ' + a[1])
+            print('  After evidence: ' + b[1])
+
+
+def load_baseline(path):
+    # Local reports are untrusted too; bound input and never echo file contents.
+    with open(path, 'rb') as stream:
+        raw = stream.read(65537)
+    if len(raw) > 65536:
+        raise ValueError()
+    saved = json.loads(raw)
+    if (not isinstance(saved, dict) or saved.get('version') != 1
+            or not isinstance(saved.get('target'), str)
+            or not re.fullmatch('[a-f0-9]{64}', saved['target'])
+            or not valid_data(saved.get('diagnostics'))):
+        raise ValueError()
+    return saved
+
+
+def main(argv=None):
+    parser = argparse.ArgumentParser(description='Read-only Frame setup diagnostics. Never pairs, repairs or asks for a password.')
+    parser.add_argument('--alias', default='frame', help='Existing trusted SSH alias (default: frame)')
+    parser.add_argument('--lan', default='frame.local', help='LAN fallback host/IP')
+    parser.add_argument('--usb', default='10.86.200.233', help='USB fallback IP; use only with the intended headset connected')
+    parser.add_argument('--plan', action='store_true', help='Print a read-only repair plan from recognized evidence')
+    parser.add_argument('--save-report', metavar='FILE', help='Create a local JSON baseline (never overwrite an existing file)')
+    parser.add_argument('--compare-before', metavar='FILE', help='Compare a saved baseline with this fresh read-only run')
+    args = parser.parse_args(argv)
+    baseline = None
+    if args.compare_before:
+        try:
+            baseline = load_baseline(args.compare_before)
+        except (OSError, ValueError, TypeError, UnicodeError, RecursionError):
+            print('UNKNOWN Baseline: Cannot read a valid doctor report; no comparison performed.')
+            return 2
+    for value in (args.alias, args.lan, args.usb):
+        if not re.fullmatch(r'[A-Za-z0-9][A-Za-z0-9._:-]{0,252}', value):
+            parser.error('Use a plain alias, hostname or IP address.')
+    print('Frame doctor: read-only; no passwords, pairing, repairs or raw logs. Reports are saved only with --save-report.')
+    if not shutil.which('ssh'):
+        print('BROKEN Setup: Install an OpenSSH client, then run Set Up Connection.')
+        return 2
+    config = run(ssh_args(args.alias)[:-1] + ['-G', args.alias])
+    if config is None or config.returncode:
+        print('UNKNOWN Setup: SSH configuration could not be read; check it locally.')
+        return 2
+    settings = dict(line.split(' ', 1) for line in config.stdout.splitlines() if ' ' in line)
+    identity = settings.get('hostkeyalias') or settings.get('hostname', args.alias)
+    # Bind reports to the configured logical SSH target, across LAN/USB fallback.
+    # This is configuration continuity, not proof of physical headset identity.
+    target = hashlib.sha256(json.dumps([args.alias, identity, settings.get('hostname'),
+                                      settings.get('user'), settings.get('port'), args.lan, args.usb]).encode()).hexdigest()
+    if baseline is not None and baseline['target'] != target:
+        print('UNKNOWN Baseline: SSH target configuration differs; comparison refused.')
+        return 2
+    source = Path(__file__).read_text()
+    for label, host in (('configured alias (Tailscale if configured)', None), ('LAN', args.lan), ('USB-C', args.usb)):
+        result = run(ssh_args(args.alias, host, identity) + ['python3 -B - --probe'], timeout=90, input=source)
+        if result is not None and result.returncode == 0:
+            try:
+                data = json.loads(result.stdout)
+                if not valid_data(data):
+                    raise ValueError()
+            except (ValueError, RecursionError):
+                print('UNKNOWN Probe: Invalid response; check Python 3 availability on the headset. No raw output displayed.')
+                return 1
+            print('OK Connection: ' + label + '; verified SSH identity and key login.')
+            code = report(data)
+            if args.plan:
+                repair_plan(data)
+            if baseline is not None:
+                compare(baseline['diagnostics'], data)
+            if args.save_report:
+                try:
+                    # Exclusive create prevents clobbering a baseline or following a symlink.
+                    fd = os.open(args.save_report, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600)
+                    with os.fdopen(fd, 'w') as stream:
+                        json.dump({'version': 1, 'target': target, 'diagnostics': data}, stream)
+                        stream.write('\n')
+                    print('OK Report: Local baseline created; review it before sharing.')
+                except OSError:
+                    print('UNKNOWN Report: Could not create local baseline; existing files are never overwritten.')
+                    return 2
+            return code
+        if result is not None and result.returncode != 255:
+            print('UNKNOWN Probe: SSH connected but diagnostics failed; check Python 3 on the headset.')
+            return 1
+        reason = failure(result.stderr if result is not None else '')
+        print('WARN Connection (' + label + '): ' + reason)
+    # No /register call: an open devkit port cannot prove pairing mode is enabled.
+    hosts = (settings.get('hostname', args.alias), args.lan, args.usb)
+    if any(port_open(host, 32000) for host in hosts):
+        print('WARN Pairing: Devkit port responds. Use Set Up Connection and Developer > Pair new host; no pairing request was sent.')
+    else:
+        print('UNKNOWN Pairing: Devkit port did not respond. Needs your hands: wake headset, enable Developer Mode and check its address.')
+    for i, label in enumerate(SECTIONS, 1):
+        print(f'UNKNOWN {i}. {label}: No authenticated SSH path.')
+    return 2
+
+
+# Derive the output allowlist from literal strings, not remote data. This module
+# has no dynamic diagnostic messages. AST stays stdlib and runs only locally.
+def messages():
+    import ast
+    tree = ast.parse(Path(__file__).read_text())
+    allowed = set()
+    for function in tree.body:
+        if not isinstance(function, ast.FunctionDef) or function.name not in ('probe', 'storage', 'signal_check'):
+            continue
+        for node in ast.walk(function):
+            if (isinstance(node, ast.List) and len(node.elts) == 2
+                    and all(isinstance(e, ast.Constant) and isinstance(e.value, str) for e in node.elts)
+                    and node.elts[0].value in ('OK', 'WARN', 'BROKEN', 'UNKNOWN')):
+                allowed.add(node.elts[1].value)
+            if isinstance(node, ast.Call) and isinstance(node.func, ast.Name) and node.func.id == 'signal_check':
+                allowed.update(arg.value for arg in node.args[2:4] if isinstance(arg, ast.Constant))
+    return allowed
+
+
+if __name__ == '__main__':
+    if sys.argv[1:] == ['--probe']:
+        print(json.dumps(probe()))
+    else:
+        MESSAGES = messages()
+        sys.exit(main())

scripts/frame_power_report.py

@@ -0,0 +1,54 @@
+"""Offline, accessible power report. No network requests or external resources."""
+import base64
+import html
+import json
+
+
+def render(report, csv_text):
+    def esc(value):
+        return html.escape(str(value), quote=True)
+
+    def download(text, mime, filename, label):
+        data = base64.b64encode(text.encode('utf-8')).decode('ascii')
+        return f'<a download="{filename}" href="data:{mime};base64,{data}">{label}</a>'
+
+    rows = []
+    for metric, item in report['summary'].items():
+        numeric = 'mean' in item
+        values = [item.get(key) for key in ('min', 'mean', 'max', 'last')]
+        cells = ''.join(f'<td>{esc(value) if value is not None else "Unknown"}</td>' for value in values)
+        states = ', '.join(item.get('states', [])) or ('Numeric' if numeric else 'Unknown')
+        rows.append(f'<tr><th scope="row">{esc(metric)}</th><td>{esc(item["unit"])}</td>'
+                    f'{cells}<td>{item["available"]} / {item["unavailable"]}</td>'
+                    f'<td>{esc(states)}</td><td>{esc(", ".join(item["sources"]))}</td></tr>')
+    missing = sorted({g for sample in report['samples'] for g in sample['unavailableGroups']})
+    json_text = json.dumps(report, allow_nan=False, indent=2)
+    links = download(json_text, 'application/json', 'frame-power.json', 'Download JSON samples and summary')
+    links += ' · ' + download(csv_text, 'text/csv', 'frame-power.csv', 'Download CSV samples')
+    return f'''<!doctype html>
+<html lang="en"><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1">
+<meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src 'unsafe-inline'; base-uri 'none'; form-action 'none'">
+<title>Frame power and heat report</title>
+<style>body{{font:16px system-ui,sans-serif;line-height:1.5;margin:24px;color:#18212b;background:#fff}}
+a{{color:#0645ad}}a:focus-visible{{outline:3px solid #0645ad;outline-offset:4px}}
+table{{border-collapse:collapse;width:100%;min-width:1100px}}th,td{{padding:8px;text-align:left;border:1px solid #adb5bd}}
+thead th,td{{white-space:nowrap}}th[scope=row]{{min-width:240px;max-width:300px;overflow-wrap:anywhere}}
+td:last-child{{min-width:220px;max-width:300px;white-space:normal;overflow-wrap:anywhere}}
+thead{{background:#edf1f5}}.scroll{{overflow:auto}}h1{{line-height:1.2}}</style>
+<main><h1>Frame power and heat report</h1>
+<p>Headset: {esc(report.get("headset", {}).get("alias", "frame"))}</p>
+<p>{len(report['samples'])} of {report['requestedSamples']} requested samples received; target interval {esc(report['intervalSeconds'])} seconds.</p>
+<p>Collection: {esc(report['stopped'] or 'Completed')}. Results describe only the samples received.</p>
+<p>{links}</p>
+<p>Unknown means missing, unreadable or invalid, never zero. Means exclude unknown values and are not time-weighted.
+Battery watts: positive charging, negative discharge. C means °C, W watts, A amps, MHz megahertz, RPM revolutions per minute.
+Raw readings have no inferred percentage or worn threshold. Rails overlap: do not sum them.</p>
+<p>Unavailable sensor groups in one or more samples: {esc(', '.join(missing) or 'None reported')}.</p>
+<div class="scroll" role="region" aria-label="Metric summary, scroll horizontally for all columns" tabindex="0">
+<table><caption>Received measurements, with units and availability counts</caption>
+<thead><tr><th scope="col">Metric</th><th scope="col">Unit</th><th scope="col">Min</th><th scope="col">Mean</th><th scope="col">Max</th><th scope="col">Last</th><th scope="col">Available / unknown</th><th scope="col">States</th><th scope="col">Sources</th></tr></thead>
+<tbody>{''.join(rows)}</tbody></table></div>
+<p>Sensor accuracy is unverified. Suspect negative thermistors remain visible. No temperature safety limits,
+energy use or battery-runtime estimates are inferred. JSON includes actual timing, OS builds and per-sample availability.</p>
+<p>This file stays on your computer and works offline. Downloaded files contain sensor source paths and OS builds;
+review them before sharing. No settings, services, security or passwords were changed.</p></main></html>'''

scripts/frame_power_sample.py

@@ -0,0 +1,359 @@
+"""Bounded read-only Frame measurements; no device files are written.
+
+The host sends this and frame_status.py over one trusted SSH connection. Only
+battery() and CPU tick helpers are reused: no OpenVR, services or analytics.
+"""
+import argparse
+import csv
+import glob
+import io
+import json
+import math
+from pathlib import Path
+import queue
+import subprocess
+import sys
+import tempfile
+import threading
+import time
+
+LOCK = Path('/tmp/frame-test.lock')
+UNAVAILABLE = 'unavailable: not reported, unreadable or invalid'
+
+
+def read(path):
+    try:
+        return Path(path).read_text().strip()
+    except (OSError, UnicodeError):
+        return None
+
+
+def number(path, scale=1, minimum=None, maximum=None):
+    try:
+        value = int(read(path)) * scale
+        if not math.isfinite(value):
+            return None
+        if minimum is not None and value < minimum or maximum is not None and value > maximum:
+            return None
+        return round(value, 6)
+    except (TypeError, ValueError, OverflowError):
+        return None
+
+
+def snapshot(status, before):
+    if LOCK.exists():
+        raise RuntimeError('Smoke session active (/tmp/frame-test.lock); no sensors read.')
+    ticks = status.cpu_ticks()
+    readings = {}
+
+    def add(key, value, unit, source):
+        readings[key] = {'value': value, 'unit': unit, 'source': source,
+                         'state': 'available' if value is not None else UNAVAILABLE}
+
+    battery = status.battery() or {}
+    for field, unit in (('percent', '%'), ('status', 'state'), ('watts', 'W'),
+                        ('tempC', 'C')):
+        value = battery.get(field)
+        if field == 'status' and value not in ('Charging', 'Discharging', 'Not charging', 'Full'):
+            value = None
+        add('battery.' + field, value, unit, battery.get('source'))
+    add('cpu.percent', status.cpu_percent(before, ticks), '%', '/proc/stat')
+    if before is None:
+        readings['cpu.percent']['state'] = 'unavailable: needs two valid CPU tick samples'
+    add('gpu.clock', number('/sys/class/devfreq/3d00000.gpu/cur_freq', 1e-6, 0),
+        'MHz', '/sys/class/devfreq/3d00000.gpu/cur_freq')
+
+    # Discover by driver name/label, never assume a hwmon index. Keep source
+    # paths and channel numbers to distinguish duplicate labels.
+    for node in sorted(glob.glob('/sys/class/hwmon/hwmon*')):
+        name = read(node + '/name') or Path(node).name
+        for path in sorted(glob.glob(node + '/power*_input')):
+            channel = Path(path).name[:-6]
+            label = read(node + '/' + channel + '_label') or channel
+            add(f'rail.{name}.{label}.{channel}', number(path, 1e-6, 0), 'W', path)
+        for path in sorted(glob.glob(node + '/fan*_input')):
+            add(f'fan.{name}.{Path(path).stem}', number(path, minimum=0), 'RPM', path)
+        # pwm1 on Frame's driver is percent; leave raw to avoid assuming the
+        # generic hwmon 0..255 scale on other drivers or later firmware.
+        if name == 'slg4ax46073v':
+            add('fan.pwmRaw', number(node + '/pwm1', minimum=0), 'raw', node + '/pwm1')
+    for node in sorted(glob.glob('/sys/class/thermal/thermal_zone*')):
+        name = read(node + '/type') or Path(node).name
+        add(f'thermal.{name}.{Path(node).name}', number(node + '/temp', 0.001, -273.15, 200),
+            'C', node + '/temp')
+    for node in sorted(glob.glob('/sys/bus/iio/devices/iio:device*')):
+        for path in sorted(glob.glob(node + '/in_temp_*_input')):
+            add(f'board.{Path(node).name}.{Path(path).stem}', number(path, 0.001, -273.15, 200),
+                'C', path)
+        for field in ('iin', 'ichg'):
+            path = node + '/in_current_pm8550b_' + field + '_fb_input'
+            # Known names, but no fixed IIO index; absent channels are covered
+            # by group availability below.
+            if Path(path).exists():
+                add(f'charger.{Path(node).name}.{field}', number(path, 1e-6), 'A', path)
+        if read(node + '/name') == 'vcnl4000':
+            add('proximity.raw', number(node + '/in_proximity_raw', minimum=0),
+                'raw', node + '/in_proximity_raw')
+    unavailable = [group for group in ('rail', 'fan', 'thermal', 'board', 'charger', 'proximity')
+                   if not any(k.startswith(group + '.') and v['value'] is not None
+                              for k, v in readings.items())]
+    os_info = dict(line.split('=', 1) for line in (read('/etc/os-release') or '').splitlines()
+                   if '=' in line)
+    return {'time': time.time(), 'osBuild': os_info.get('BUILD_ID', '').strip('"') or None,
+            'readings': readings, 'unavailableGroups': unavailable}, ticks
+
+
+def summarize(samples):
+    result = {}
+    keys = sorted({key for sample in samples for key in sample['readings']})
+    for key in keys:
+        rows = [s['readings'][key] for s in samples if key in s['readings']]
+        values = [r['value'] for r in rows if r['value'] is not None]
+        item = {'unit': rows[0]['unit'], 'sources': sorted({r['source'] for r in rows if r['source']}),
+                'available': len(values), 'unavailable': len(samples) - len(values)}
+        if values and all(isinstance(v, (int, float)) for v in values):
+            item.update(min=min(values), max=max(values), mean=round(sum(values) / len(values), 6),
+                        first=values[0], last=values[-1])
+        else:
+            item['states'] = sorted(set(values))
+        result[key] = item
+    return result
+
+
+def collect(status, count, interval, emit=None):
+    samples, before = [], None
+    started = time.monotonic()
+    stopped = None
+    for index in range(count):
+        if index:
+            time.sleep(max(0, started + index * interval - time.monotonic()))
+        try:
+            sample, before = snapshot(status, before)
+        except RuntimeError as exc:
+            stopped = str(exc)
+            break
+        sample['elapsedSeconds'] = round(time.monotonic() - started, 6)
+        samples.append(sample)
+        if emit:
+            emit({'sample': sample})
+    return {'schemaVersion': 1, 'requestedSamples': count, 'intervalSeconds': interval,
+            'stopped': stopped, 'samples': samples, 'summary': summarize(samples)}
+
+
+def csv_samples(report):
+    # CSV quoting alone does not prevent spreadsheet formulas in text fields.
+    def cell(value):
+        if isinstance(value, str) and (value.startswith(('\t', '\r', '\n')) or
+                                       value.lstrip(' \t\r\n').startswith(('=', '+', '-', '@'))):
+            return "'" + value
+        return value
+
+    output = io.StringIO(newline='')
+    writer = csv.writer(output)
+    writer.writerow(('time', 'elapsedSeconds', 'metric', 'value', 'unit', 'source', 'state'))
+    if 'headset' in report:
+        for key, value in (('collection.state', report['stopped'] or 'Completed'),
+                           ('collection.requestedSamples', report['requestedSamples']),
+                           ('collection.receivedSamples', len(report['samples']))):
+            writer.writerow([cell(v) for v in ('', '', key, value, '', report['headset']['alias'],
+                                              'incomplete' if report['stopped'] else 'completed')])
+    for sample in report['samples']:
+        for key, row in sample['readings'].items():
+            writer.writerow([cell(v) for v in (sample['time'], sample['elapsedSeconds'], key,
+                                               row['value'], row['unit'], row['source'], row['state'])])
+        for group in sample['unavailableGroups']:
+            writer.writerow([cell(v) for v in (sample['time'], sample['elapsedSeconds'], group, '', '', '', UNAVAILABLE)])
+    return output.getvalue()
+
+
+def parser():
+    ap = argparse.ArgumentParser(description=__doc__)
+    ap.add_argument('--count', type=int, default=12, help='samples, 1..720 (default 12)')
+    ap.add_argument('--interval', type=float, default=5, help='seconds, 1..60 (default 5)')
+    ap.add_argument('--csv', action='store_true', help='CSV samples on stdout; JSON summary on stderr')
+    ap.add_argument('--html', type=Path, metavar='FILE', help='save an offline accessible report with JSON/CSV downloads; Ctrl+C retains received samples (max 10 minutes); never overwrites')
+    ap.add_argument('--probe', action='store_true', help=argparse.SUPPRESS)
+    ap.add_argument('--stream', action='store_true', help=argparse.SUPPRESS)
+    return ap
+
+
+def remote_payload():
+    root = Path(__file__).resolve().parents[1]
+    source = (root / 'ui/frame_status.py').read_text()
+    # Executing as a module prevents frame_status.main() from probing unrelated
+    # status. Nothing is installed, cached or logged on the headset.
+    return ('import types, sys\n'
+            'status = types.ModuleType("frame_status")\n'
+            f'exec(compile({source!r}, "frame_status.py", "exec"), status.__dict__)\n'
+            'sys.modules["frame_status"] = status\n' + Path(__file__).read_text())
+
+
+def stream_report(command, payload, count, interval, stop_event=None, on_sample=None, discard_errors=False):
+    """Receive each sample before the next wait; stop only our local SSH child.
+
+    The remote bounded reader exits on its next write to the closed connection.
+    No remote process-control command is sent. Keep already received samples on
+    interrupt, transport failure or deadline, clearly marked as incomplete.
+    """
+    if stop_event is not None and stop_event.is_set():
+        return {'schemaVersion': 1, 'requestedSamples': count, 'intervalSeconds': interval,
+                'stopped': 'Stopped before collection; no SSH started', 'samples': [], 'summary': {}}
+    samples, final, stopped = [], None, None
+    events = queue.Queue(maxsize=count + 2)
+    reader_stop = threading.Event()
+    deadline = time.monotonic() + count * interval + 30
+    with tempfile.TemporaryFile(mode='w+') as errors:
+        proc = subprocess.Popen(command + ['--stream'], stdin=subprocess.PIPE,
+                                stdout=subprocess.PIPE, stderr=subprocess.DEVNULL if discard_errors else errors, text=True)
+        def receive():
+            try:
+                for _ in range(count + 2):
+                    line = proc.stdout.readline(262145)
+                    if not line:
+                        break
+                    if len(line) > 262144 or not line.endswith('\n'):
+                        line = 'invalid or oversized sample'
+                    while not reader_stop.is_set():
+                        try:
+                            events.put(line, timeout=0.2)
+                            break
+                        except queue.Full:
+                            continue
+                    if reader_stop.is_set():
+                        return
+            finally:
+                while not reader_stop.is_set():
+                    try:
+                        events.put(None, timeout=0.2)
+                        break
+                    except queue.Full:
+                        continue
+        reader = threading.Thread(target=receive, daemon=True)
+        reader.start()
+        def feed():
+            try:
+                proc.stdin.write(payload)
+                proc.stdin.close()
+            except OSError:
+                pass  # transport exit/EOF below marks the observation incomplete
+        writer = threading.Thread(target=feed, daemon=True)
+        writer.start()
+        try:
+            while True:
+                if stop_event is not None and stop_event.is_set() and events.empty():
+                    stopped = 'Stopped; received samples retained'
+                    break
+                remaining = deadline - time.monotonic()
+                if remaining <= 0:
+                    stopped = 'Timed out; received samples retained'
+                    break
+                try:
+                    line = events.get(timeout=min(remaining, 0.2))
+                except queue.Empty:
+                    continue
+                if line is None:
+                    break
+                event = json.loads(line)
+                if 'sample' in event:
+                    if len(samples) >= count:
+                        raise ValueError('Too many samples received')
+                    samples.append(event['sample'])
+                    if on_sample:
+                        on_sample(event['sample'])
+                    print(f'Received {len(samples)}/{count} samples; Ctrl+C to stop and save.', file=sys.stderr)
+                elif 'finished' in event:
+                    final = event['finished']
+            if not stopped:
+                proc.wait(timeout=max(0.1, deadline - time.monotonic()))
+        except KeyboardInterrupt:
+            stopped = 'Stopped by user; received samples retained'
+        except (OSError, ValueError, subprocess.TimeoutExpired) as exc:
+            stopped = f'Collection interrupted: {exc}'
+        finally:
+            reader_stop.set()
+            if proc.poll() is None:
+                proc.terminate()
+                try:
+                    proc.wait(timeout=3)
+                except subprocess.TimeoutExpired:
+                    proc.kill()
+                    proc.wait(timeout=3)
+            writer.join(timeout=3)
+            if not proc.stdin.closed:
+                try:
+                    proc.stdin.close()
+                except OSError:
+                    pass
+            reader.join(timeout=3)
+            proc.stdout.close()
+        if not stopped:
+            errors.seek(0)
+            if final and final.get('stopped') and proc.returncode in (0, 75):
+                stopped = final['stopped']
+            elif proc.returncode or final is None or len(samples) != count:
+                stopped = f'Incomplete collection (SSH exit {proc.returncode}): ' + errors.read(2000).strip()
+    return {'schemaVersion': 1, 'requestedSamples': count, 'intervalSeconds': interval,
+            'stopped': stopped, 'samples': samples, 'summary': summarize(samples)}
+
+
+def main(argv=None):
+    ap = parser()
+    args = ap.parse_args(argv)
+    if not 1 <= args.count <= 720 or not math.isfinite(args.interval) or not 1 <= args.interval <= 60:
+        ap.error('count must be 1..720 and interval must be finite, 1..60 seconds')
+    if args.html and (args.csv or args.probe or args.count * args.interval > 600):
+        ap.error('--html requires a host session, no --csv, and count × interval <= 600 seconds')
+    if args.html and args.html.exists():
+        ap.error('--html output already exists; choose a new file')
+    # Also honor a coordinator lock on the computer before opening SSH.
+    if LOCK.exists():
+        if args.probe and args.stream:
+            print(json.dumps({'finished': {'stopped': 'Smoke session active (/tmp/frame-test.lock); no sensors read'}}), flush=True)
+        print('Smoke session active (/tmp/frame-test.lock); no SSH or sensors accessed.', file=sys.stderr)
+        return 75
+    if args.probe:
+        import frame_status
+        emit = (lambda event: print(json.dumps(event, allow_nan=False), flush=True)) if args.stream else None
+        report = collect(frame_status, args.count, args.interval, emit)
+        if args.stream:
+            emit({'finished': {'stopped': report['stopped']}})
+            return 75 if report['stopped'] else 0
+    else:
+        command = ['ssh', '-T', '-o', 'BatchMode=yes', '-o', 'StrictHostKeyChecking=yes',
+                   '-o', 'ConnectTimeout=5', '-o', 'ServerAliveInterval=5',
+                   '-o', 'ServerAliveCountMax=2', 'frame',
+                   'python3', '-', '--probe', '--count', str(args.count), '--interval', str(args.interval)]
+        try:
+            if args.html:
+                report = stream_report(command, remote_payload(), args.count, args.interval)
+            else:
+                run = subprocess.run(command, input=remote_payload(), text=True, capture_output=True,
+                                     timeout=args.count * args.interval + 30)
+                if run.returncode:
+                    print('Read-only sample failed: ' + (run.stderr.strip() or f'SSH exit {run.returncode}'),
+                          file=sys.stderr)
+                    return run.returncode
+                report = json.loads(run.stdout)
+        except (OSError, subprocess.TimeoutExpired, ValueError) as exc:
+            print(f'Read-only sample unavailable: {exc}', file=sys.stderr)
+            return 1
+    if args.html:
+        from frame_power_report import render
+        try:
+            with args.html.open('x', encoding='utf-8') as output:
+                output.write(render(report, csv_samples(report)))
+        except OSError as exc:
+            print(f'Could not save report: {exc}; received JSON report follows on stdout.', file=sys.stderr)
+            print(json.dumps(report, allow_nan=False))
+            return 1
+        print(f'Saved {len(report["samples"])} samples to {args.html}. Open it in your browser.', file=sys.stderr)
+    elif args.csv:
+        sys.stdout.write(csv_samples(report))
+        print(json.dumps({k: v for k, v in report.items() if k != 'samples'}, allow_nan=False), file=sys.stderr)
+    else:
+        print(json.dumps(report, allow_nan=False))
+    return 75 if report['stopped'] else 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())

scripts/macview-bench.py

@@ -55,6 +55,7 @@ from urllib.parse import quote, urlencode  # %20, not +: the agent's URLComponen
 ROOT = Path(__file__).resolve().parent.parent
 sys.path.insert(0, str(ROOT / "ui"))
 import frame_macview  # noqa: E402
+import frame_pcview  # noqa: E402
 
 RESULTS = ROOT / "bench" / "results"
 PAGES = ROOT / "bench" / "pages"
@@ -254,7 +255,10 @@ class LabView(frame_macview.MacView):
 
 def ssh_runner(base):
     def run(remote, stdin=None, timeout=30):
-        r = subprocess.run([*base, remote], input=stdin, capture_output=True, text=True, timeout=timeout)
+        r = subprocess.run([*base, remote], input=stdin.encode("utf-8") if stdin is not None else None,
+                           capture_output=True, timeout=timeout)
+        r.stdout = r.stdout.decode("utf-8", errors="replace")
+        r.stderr = r.stderr.decode("utf-8", errors="replace")
         if r.returncode:
             e = RuntimeError((r.stderr or r.stdout).strip())
             e.stdout = r.stdout
@@ -381,7 +385,11 @@ def run_scenario(args, scenario, agent_port, token, frame_ssh):
     if args.browser_flag is not None:
         mv.browser_flags = [f for f in args.browser_flag if f]
     chrome = None
-    src = "test"
+    src = args.source or "test"
+    cpu = None
+    if args.pc:
+        mv.host = "windows" if sys.platform == "win32" else "linux"
+        mv.viewer_profile = "pc-view"
     try:
         if scenario in ("scroll", "type"):
             chrome = chrome_window(f"{scenario}.html")
@@ -405,9 +413,10 @@ def run_scenario(args, scenario, agent_port, token, frame_ssh):
         since = max([f["s"] for f in first["frames"]] or [0])
         captured_before = first["captured"]
         start_mac_us = mv.call("/stats", id=stream["id"])["now"]
-        agent_pid = int(subprocess.run(["pgrep", "-f", "Frame Mac View Lab.app/Contents/MacOS/frame-mac-view"],
-                                       capture_output=True, text=True).stdout.split()[0])
-        cpu = CpuSampler(frame_ssh, agent_pid)
+        if not args.pc:
+            agent_pid = int(subprocess.run(["pgrep", "-f", "Frame Mac View Lab.app/Contents/MacOS/frame-mac-view"],
+                                           capture_output=True, text=True).stdout.split()[0])
+            cpu = CpuSampler(frame_ssh, agent_pid)
         if relay:
             relay.begin()
         expected = 0  # input events the harness asked the viewer for
@@ -443,7 +452,8 @@ def run_scenario(args, scenario, agent_port, token, frame_ssh):
         if not streams:
             raise SystemExit(f"{scenario}: the stream ended during the run (did the Frame go to sleep?)")
         data = streams[0]
-        cpu.stop()
+        if cpu:
+            cpu.stop()
         if args.raw:
             Path(f"{args.raw}-{scenario}.json").write_text(json.dumps(data))
         result = summarize(scenario, data, start_mac_us, end_mac_us, args, relay, schedule, expected)
@@ -452,7 +462,7 @@ def run_scenario(args, scenario, agent_port, token, frame_ssh):
                             for e in data.get("events", []) if e["t"] >= start_mac_us]
         result["captured"] = (captured_end if captured_end is not None else data["captured"]) - captured_before
         result["source_fps"] = round(result["captured"] / max(result["duration_s"], 1), 1)
-        result["cpu"] = cpu.summary()
+        result["cpu"] = cpu.summary() if cpu else {"host": "not sampled"}
         result["viewer"] = data["summary"].get("decoder", "")
         result["show_s"] = show_s
         result["panel"] = shown.get("panel")
@@ -460,6 +470,8 @@ def run_scenario(args, scenario, agent_port, token, frame_ssh):
         result["route"] = mv.route
         return result
     finally:
+        if cpu:
+            cpu.stop()
         try:
             mv.stop(src)
         except Exception:  # noqa: BLE001 - best effort
@@ -670,6 +682,8 @@ def fmt(v):
 
 def add_run_args(r):
     r.add_argument("--scenario", default="test,scroll,type")
+    r.add_argument("--pc", action="store_true", help="run the bundled PC host; use --scenario test or capture")
+    r.add_argument("--source", default="", help="PC source: window:ID, display:ID, or choose (Linux portal)")
     r.add_argument("--duration", type=float, default=20)
     r.add_argument("--warmup", type=float, default=3)
     r.add_argument("--quality", default="balanced", choices=list(frame_macview.QUALITY))
@@ -717,7 +731,7 @@ def frame_ssh_for(args):
 
 
 def run_suite(args, frame_ssh, quiet=False):
-    agent_port, token = lab_agent()
+    agent_port, token = (args.pc_view.port, args.pc_view.token) if args.pc else lab_agent()
     results = []
     for sc in args.scenario.split(","):
         if not quiet:
@@ -744,11 +758,12 @@ def document(args, frame_ssh, results, **extra):
     commit = git("rev-parse", "--short", "HEAD") + ("+dirty" if git("status", "--porcelain", "--", "mac", "ui") else "")
     return {
         "label": args.label or args.cmd, "date": datetime.datetime.now().isoformat(timespec="seconds"), "commit": commit,
-        "config": {"quality": args.quality, "mode": args.mode, "net": args.net or "none", "delay_ms": args.delay,
+        "config": {"quality": args.quality, "mode": "native" if args.pc else args.mode, "net": args.net or "none", "delay_ms": args.delay,
                    "buffer_ms": args.buffer, "host": args.host or args.frame, "usb": args.usb, "ssh_opts": args.ssh_opt,
                    "encoder": os.environ.get("FRAME_MAC_VIEW_ENCODER", ""), "duration_s": args.duration,
                    "browser_flags": args.browser_flag if args.browser_flag is not None else frame_macview.BROWSER_FLAGS},
-        "frame_build": build.strip().partition("=")[2], "mac": platform.mac_ver()[0], "headset": standby[-40:],
+        "frame_build": build.strip().partition("=")[2], "mac": platform.mac_ver()[0],
+        "host_platform": platform.platform(), "source": args.source, "pc_host": args.pc, "headset": standby[-40:],
         "scenarios": results, **extra,
     }
 
@@ -819,19 +834,46 @@ def main():
             print("\nworse:\n  " + "\n  ".join(regs))
         sys.exit(1 if regs else 0)
 
-    lab_agent()
+    if args.pc and (args.cmd == "ab" or args.scenario not in ("test", "capture")):
+        p.error("PC runs use --scenario test or --scenario capture; Mac automation is not portable")
+    if args.pc and args.scenario == "capture" and not args.source:
+        p.error("capture needs --source window:ID, display:ID, or choose")
+    if not args.pc:
+        lab_agent()
     frame_ssh = frame_ssh_for(args)
     # Keep the Mac's screen awake: virtual displays aren't removed while it sleeps.
     runs = 1 if args.cmd == "run" else args.repeat * len(args.arm)
-    awake = subprocess.Popen(["caffeinate", "-d", "-u", "-t", str(int(runs * (args.duration * 4 + 60) + 120))])
+    awake = subprocess.Popen(["caffeinate", "-d", "-u", "-t", str(int(runs * (args.duration * 4 + 60) + 120))]) if sys.platform == "darwin" else None
+    args.pc_view = None
     try:
+        if args.pc:
+            args.pc_view = frame_pcview.PCView(frame_ssh[:-1], ssh_runner(frame_ssh), frame_ssh[-1])
+            args.pc_view.ensure_agent()
+            if args.source == "choose":
+                args.pc_view.call("/permissions", method="POST")
+                print("Choose a window or screen in your desktop's sharing dialog.", flush=True)
+                deadline = time.monotonic()+125
+                while time.monotonic() < deadline:
+                    state = args.pc_view.call("/status")
+                    if not state.get("selecting"):
+                        sources = args.pc_view.call("/windows")["windows"]
+                        if not sources:
+                            raise SystemExit(state.get("selectionError") or "Nothing was shared")
+                        args.source = sources[-1]["src"]
+                        break
+                    time.sleep(.5)
+                else:
+                    raise SystemExit("Sharing dialog timed out")
         if args.cmd == "ab":
             arm_runs, table = ab(args, frame_ssh)
             write(document(args, frame_ssh, [], arms=args.arm, runs=arm_runs, table=table), args)
             return
         results = run_suite(args, frame_ssh)
     finally:
-        awake.terminate()
+        if args.pc_view:
+            args.pc_view.shutdown()
+        if awake:
+            awake.terminate()
     doc = document(args, frame_ssh, results)
     write(doc, args)
     bad = [f"{r['scenario']} {k}" for r in results for k, v in r["grades"].items() if v in ("bad", "missing")]

site/README.md

@@ -5,7 +5,8 @@ The Frame Control website, <https://frame-control.pages.dev>, on Cloudflare Page
 - `public/`: static pages. `/` is the landing page, `/feedback/` the feedback form, `/privacy/` the privacy note.
 - `functions/api/feedback.js`: `POST /api/feedback`, which turns the form into a GitHub issue labelled `feedback`.
 - `lib/feedback.js`: validation and issue formatting, tested by `test/feedback.test.mjs`.
-- `public/js/site.js`: settings, including the Ko-fi page name for the donate buttons.
+- `public/js/site.js`: settings, including the Ko-fi page name for the donate buttons, OS hints and opening-help deep links. OS hints lead to instructions, never directly to an architecture-specific installer.
+- `test/onboarding.test.mjs`: desktop/mobile browser hints and opening-help deep links.
 
 ## Feedback → GitHub issues
 
@@ -33,3 +34,30 @@ npx wrangler pages deploy --branch main      # production
 ```
 
 Point `GITHUB_REPO` in `.dev.vars` at a scratch repo when testing locally so test issues don't land on the real tracker.
+
+## First-run verification
+
+Before changing download or setup instructions:
+
+- Compare every linked filename with `gh release view --repo saphid/frame-control --json tagName,assets`.
+  Browser OS hints cannot establish CPU architecture; keep every platform choice visible.
+- Run `node --test site/test/*.test.mjs` from the repo root, plus
+  `node --check site/public/js/site.js` and `node --check site/public/js/feedback.js`.
+- Serve `public/` locally (for example `python3 -m http.server 8793 --directory site/public`
+  from the repo root). Check 320px, 390px, 768px and desktop widths: section navigation,
+  the hero link, download cards, opening-help links, feedback and privacy pages. Check
+  horizontal overflow and that anchor targets clear the sticky header. Repeat with
+  JavaScript disabled: downloads and navigation must remain available.
+- Check setup labels against `app/main.js`, `scripts/connect.sh`, `ui/frame_connect.py`
+  and the Devices page. macOS discovery failure exits; Windows/Linux prompt for an IP.
+  The app's Devices → Add a headset dialog can pass an explicit address on all platforms.
+- Separate website checks from native installation and real-headset pairing evidence.
+  A successful page/link check does not verify an installer or headset approval flow.
+
+On 2026-10-24, the first-run update was checked against published v0.4.16 assets:
+all seven linked desktop installers returned HTTP 200 after redirects, as did the
+linked GitHub documentation and trailer. Local page/resource links and section
+fragments were checked; navigation stayed visible without horizontal overflow at
+320, 390, 768 and 1280 CSS pixels. Native macOS/Windows installs and real-headset
+pairing were not exercised for this documentation change. No site deployment was
+performed.

site/public/css/site.css

@@ -38,8 +38,13 @@ code { font: 14px ui-monospace, SFMono-Regular, Menlo, monospace; background: rg
 .top nav a { color: var(--muted); font-size: 14.5px; font-weight: 500; }
 .top nav a:hover, .top nav a[aria-current] { color: var(--bright); }
 .top .end { margin-left: auto; display: flex; gap: 10px; align-items: center; }
-@media (max-width: 880px) { .top nav { display: none; } }
-@media (max-width: 480px) { .top .end .ghost { display: none; } }
+@media (max-width: 1050px) {
+  html { scroll-padding-top: 150px; }
+  .top .wrap { height: auto; min-height: 64px; flex-wrap: wrap; gap: 8px 16px; padding-top: 12px; padding-bottom: 8px; }
+  .top nav { order: 3; width: 100%; margin-left: 0; flex-wrap: wrap; gap: 0 18px; }
+  .top nav a { padding: 8px 0; }
+}
+@media (max-width: 480px) { .top .end { display: none; } }
 
 /* ---- buttons ---- */
 .btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; height: 46px; padding: 0 22px; border-radius: 10px;
@@ -199,3 +204,11 @@ textarea { min-height: 180px; resize: vertical; }
 .done p { color: var(--muted); margin: 10px auto 24px; max-width: 460px; }
 .done .cta { margin-top: 0; }
 .page h1 { font-size: clamp(34px, 5vw, 48px); }
+
+/* Opening instructions remain readable on narrow screens. */
+.dl p, .setup-note { color: var(--muted); font-size: 15px; margin-top: 16px; }
+.dl { min-width: 0; }
+code { overflow-wrap: anywhere; }
+pre { white-space: pre-wrap; overflow-wrap: anywhere; }
+pre code { background: none; padding: 0; }
+@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

site/public/index.html

@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Frame Control: manage your Steam Frame from your computer</title>
-<meta name="description" content="Free, open-source app for the Valve Steam Frame. See what the headset sees, install Steam games and Android apps, move files and text across, and check battery and status. macOS, Windows, Linux and iPhone.">
+<meta name="description" content="Free, open-source app for the Valve Steam Frame. See what the headset sees, install Steam games and Android apps, move files and text across, and check battery and status. Desktop downloads for macOS, Windows and Linux; iPhone build instructions.">
 <meta name="theme-color" content="#0e141b">
 <link rel="icon" href="/favicon.png">
 <link rel="apple-touch-icon" href="/apple-touch-icon.png">
@@ -41,13 +41,13 @@
 <main>
 <section class="hero">
   <div class="wrap">
-    <span class="eyebrow"><b>Free and open source</b><span class="sep"> · </span><span class="plats">macOS · Windows · Linux · iPhone</span></span>
+    <span class="eyebrow"><b>Free and open source</b><span class="sep"> · </span><span class="plats">macOS · Windows · Linux</span></span>
     <h1>Your Steam Frame, <span>managed from your desk.</span></h1>
-    <p class="lede">See what the headset sees, install games and Android apps, move files and text across, and keep an eye on battery and status. All over SSH, with nothing to install on the Frame.</p>
+    <p class="lede">See what the headset sees, install games and Android apps, move files and text across, and keep an eye on battery and status. Install Frame Control on your computer, then connect to your headset over SSH. This website provides downloads and instructions; it does not control the headset in your browser.</p>
     <div class="cta">
       <a class="btn primary" id="hero-download" href="#download">
         <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M12 3v12m0 0-5-5m5 5 5-5M4 20h16"/></svg>
-        <span data-label>Download Frame Control</span>
+        <span data-label>Choose your computer’s download</span>
       </a>
       <a class="btn ghost" href="#trailer">
         <svg viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M8 5.5v13a1 1 0 0 0 1.5.86l10.5-6.5a1 1 0 0 0 0-1.72L9.5 4.64A1 1 0 0 0 8 5.5z"/></svg>
@@ -173,7 +173,7 @@
     <div class="head">
       <span class="kicker">iPhone and iPad</span>
       <h2>Also in your pocket</h2>
-      <p>The same features on iPhone and iPad, served from the Frame itself, so there's nothing to run on a computer. Build it from the repo in Xcode.</p>
+      <p>The same features on iPhone and iPad, served from the Frame itself, so there's nothing to run on a computer. There is no App Store, TestFlight or iOS download in the current release. Building it requires a Mac, Xcode and your own signing team. <a href="https://github.com/saphid/frame-control/blob/main/docs/iphone.md">iPhone build and pairing instructions</a>.</p>
     </div>
     <div class="phones">
       <img src="/img/phone-home.jpg" width="600" height="1304" loading="lazy" alt="Frame Control on iPhone: headset view and device status.">
@@ -186,23 +186,24 @@
   <div class="wrap">
     <div class="head">
       <span class="kicker">Setup</span>
-      <h2>One password, typed once</h2>
-      <p>Everything else happens on your computer.</p>
+      <h2>Connect your computer to the Frame</h2>
+      <p>First <a href="#download">install and open the desktop app</a>. Keep the headset awake, on the same trusted network as your computer. Guest Wi-Fi or client isolation can block the connection.</p>
     </div>
     <div class="steps">
       <div class="card">
-        <h3>Turn on Developer Mode</h3>
-        <p>On the Frame: Steam Settings → System → <b>Enable Developer Mode</b>, then <b>Set User Password</b> in the Developer section.</p>
+        <h3>Prepare the headset</h3>
+        <p>On the Frame: Steam Settings → System → <b>Enable Developer Mode</b>, then Developer → <b>Set User Password</b>. Choose a password that isn't easy to guess; it also protects remote desktop and <code>sudo</code>.</p>
       </div>
       <div class="card">
-        <h3>Set up the connection</h3>
-        <p>Open Frame Control and choose <b>Set Up Connection</b>. It finds the headset, makes an SSH key, and asks for that password once.</p>
+        <h3>Run connection setup</h3>
+        <p>In the desktop app, choose <b>Set Up Connection…</b>. If you skipped the first prompt, use <b>Frame → Set Up Connection…</b>. A terminal opens. If discovery fails, find the Frame's IP in Quick Settings or Steam Settings → Internet. Windows/Linux setup prompts for it. On macOS, return to the app → <b>Devices &amp; connection → + Add a headset…</b>, use SSH alias <code>frame</code> for the default headset, enter the IP in <b>Address</b> and choose <b>Set Up…</b>.</p>
       </div>
       <div class="card">
-        <h3>That's it</h3>
-        <p>The app reaches the headset whenever it's awake and on the same network. For anywhere else, use <a href="https://github.com/saphid/frame-control/blob/main/docs/tailscale.md">Tailscale</a>.</p>
+        <h3>Pair, with a password fallback</h3>
+        <p>Setup tries Valve's pairing first: open Developer → <b>Pair new host</b> in the headset and approve only your request. If it fails or times out, enter the Developer Mode password in the computer's terminal (typing may be invisible), then press Enter.</p>
       </div>
     </div>
+    <p class="setup-note">The devkit service and pairing-mode step were checked on a Frame; approval and key installation through that flow remain unverified. <a href="https://github.com/saphid/frame-control/blob/main/docs/ssh.md#password-free-pairing-steamos-devkit-service">Pairing details</a>. After setup succeeds, return to the app; future connections use SSH keys. Still offline? Check Developer Mode, the IP and network isolation, then rerun setup. For use away from home, see <a href="https://github.com/saphid/frame-control/blob/main/docs/tailscale.md">Tailscale</a>.</p>
   </div>
 </section>
 
@@ -211,32 +212,39 @@
     <div class="head">
       <span class="kicker">Download</span>
       <h2>Get Frame Control</h2>
-      <p>Free, with Python and adb built in. <span hidden>Version <span data-version></span>.</span> <a href="https://github.com/saphid/frame-control/releases">Release notes</a></p>
+      <p>Choose your computer’s OS and processor, not the headset’s. Python is bundled; Linux needs <code>ssh</code>, and arm64 Linux also needs your distribution’s <code>adb</code> for Android apps. <span hidden>Version <span data-version></span>.</span> <a href="https://github.com/saphid/frame-control/releases">Release notes</a></p>
     </div>
     <div class="downloads">
-      <div class="dl" data-os="mac">
-        <div class="os"><svg viewBox="0 0 24 24" fill="currentColor"><path d="M16.37 12.6c-.02-2.2 1.8-3.26 1.88-3.31-1.02-1.5-2.62-1.7-3.19-1.72-1.36-.14-2.65.8-3.34.8-.69 0-1.75-.78-2.88-.76a4.27 4.27 0 0 0-3.6 2.19c-1.53 2.66-.39 6.6 1.1 8.76.73 1.06 1.6 2.24 2.74 2.2 1.1-.04 1.51-.71 2.84-.71 1.32 0 1.7.71 2.86.69 1.18-.02 1.93-1.08 2.65-2.14.83-1.23 1.18-2.41 1.2-2.47-.03-.01-2.3-.88-2.32-3.5zM14.2 6.13c.6-.73 1.01-1.75.9-2.76-.87.04-1.92.58-2.54 1.3-.56.64-1.05 1.67-.92 2.66.97.08 1.96-.49 2.56-1.2z"/></svg><h3>macOS</h3><span class="tag" hidden>Your system</span></div>
-        <span class="need">Apple Silicon</span>
+      <div class="dl" id="download-mac" data-os="mac">
+        <div class="os"><svg viewBox="0 0 24 24" fill="currentColor"><path d="M16.37 12.6c-.02-2.2 1.8-3.26 1.88-3.31-1.02-1.5-2.62-1.7-3.19-1.72-1.36-.14-2.65.8-3.34.8-.69 0-1.75-.78-2.88-.76a4.27 4.27 0 0 0-3.6 2.19c-1.53 2.66-.39 6.6 1.1 8.76.73 1.06 1.6 2.24 2.74 2.2 1.1-.04 1.51-.71 2.84-.71 1.32 0 1.7.71 2.86.69 1.18-.02 1.93-1.08 2.65-2.14.83-1.23 1.18-2.41 1.2-2.47-.03-.01-2.3-.88-2.32-3.5zM14.2 6.13c.6-.73 1.01-1.75.9-2.76-.87.04-1.92.58-2.54 1.3-.56.64-1.05 1.67-.92 2.66.97.08 1.96-.49 2.56-1.2z"/></svg><h3>macOS</h3><span class="tag" hidden>OS detected</span></div>
+        <span class="need">Apple Silicon (M-series) only · no Intel Mac build</span>
         <div class="links">
           <a class="btn primary" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-mac-arm64.dmg">Download .dmg</a>
         </div>
+        <p>Check Apple menu → About This Mac for your chip. Open the DMG, drag Frame Control to Applications, then open it there. Allow local network access and Terminal control when asked.</p>
+        <p>The app isn't notarized. <a href="#mac-opening">macOS opening instructions</a>.</p>
       </div>
-      <div class="dl" data-os="windows">
-        <div class="os"><svg viewBox="0 0 24 24" fill="currentColor"><path d="M3 5.5 10 4.5v7H3zM11 4.35 21 3v8.5H11zM3 12.5h7v7L3 18.5zM11 12.5h10V21l-10-1.4z"/></svg><h3>Windows</h3><span class="tag" hidden>Your system</span></div>
+      <div class="dl" id="download-windows" data-os="windows">
+        <div class="os"><svg viewBox="0 0 24 24" fill="currentColor"><path d="M3 5.5 10 4.5v7H3zM11 4.35 21 3v8.5H11zM3 12.5h7v7L3 18.5zM11 12.5h10V21l-10-1.4z"/></svg><h3>Windows</h3><span class="tag" hidden>OS detected</span></div>
         <span class="need">Windows 10 or 11, x64</span>
         <div class="links">
           <a class="btn primary" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-Setup-x64.exe">Download installer</a>
           <a class="btn ghost" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-win-x64.zip">Portable .zip</a>
         </div>
+        <p>Check Settings → System → About → System type. No native Windows ARM build is published. Run the installer, then open Frame Control from Start. The OpenSSH Client optional feature must be installed (it normally is). For portable use, extract the entire ZIP and run <code>Frame Control.exe</code>.</p>
+        <p>The installer isn't code-signed. <a href="#windows-opening">SmartScreen instructions</a>.</p>
       </div>
-      <div class="dl" data-os="linux">
-        <div class="os"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="4" width="18" height="16" rx="2"/><path d="m7 9 3 3-3 3M13 15h4"/></svg><h3>Linux</h3><span class="tag" hidden>Your system</span></div>
+      <div class="dl" id="download-linux" data-os="linux">
+        <div class="os"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="4" width="18" height="16" rx="2"/><path d="m7 9 3 3-3 3M13 15h4"/></svg><h3>Linux</h3><span class="tag" hidden>OS detected</span></div>
         <span class="need">x64 or arm64 · needs <code>ssh</code></span>
         <div class="links">
           <a class="btn primary" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-x86_64.AppImage">AppImage (x64)</a>
           <a class="btn ghost" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-amd64.deb">.deb (x64)</a>
           <a class="btn ghost" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-arm64.AppImage">AppImage (arm64)</a>
+          <a class="btn ghost" href="https://github.com/saphid/frame-control/releases/latest/download/Frame-Control-linux-arm64.deb">.deb (arm64)</a>
         </div>
+        <p>Run <code>uname -m</code>: <code>x86_64</code> means x64; <code>aarch64</code> means arm64. Install the matching .deb on Debian/Ubuntu and open Frame Control from your applications menu, or use AppImage on other distributions.</p>
+        <p><a href="#linux-opening">AppImage permissions and FUSE help</a>. On arm64 Debian/Ubuntu, install <code>adb</code> with <code>sudo apt install adb</code> for Android apps.</p>
       </div>
     </div>
   </div>
@@ -249,15 +257,22 @@
       <h2>Good questions</h2>
     </div>
     <div class="faq">
-      <details>
+      <details id="mac-opening">
         <summary>macOS says the app is damaged or can't be checked</summary>
-        <div><p>The app isn't notarized, because there's no paid Apple developer account behind it. Drag it to Applications, then clear the download quarantine once in Terminal:</p>
+        <div><p>The app isn't notarized, because there's no paid Apple developer account behind it. Only for a download you trust from the releases linked above: drag it to Applications, then clear the download quarantine once in Terminal:</p>
         <p><code>xattr -dr com.apple.quarantine "/Applications/Frame Control.app"</code></p></div>
       </details>
-      <details>
+      <details id="windows-opening">
         <summary>Windows SmartScreen says it protected my PC</summary>
         <div><p>The installer isn't code-signed. Choose <b>More info → Run anyway</b>, or use the portable .zip: unzip it anywhere and run <code>Frame Control.exe</code>.</p></div>
       </details>
+      <details id="linux-opening">
+        <summary>How do I open the Linux AppImage?</summary>
+        <div><p>In a terminal in your download folder, use the exact filename for your architecture. For x64:</p>
+        <pre><code>chmod +x Frame-Control-linux-x86_64.AppImage
+./Frame-Control-linux-x86_64.AppImage</code></pre>
+        <p>If FUSE is missing, install <code>libfuse2</code> (Ubuntu 24.04+: <code>libfuse2t64</code>), or run the same AppImage with <code>--appimage-extract-and-run</code>. Install your distribution’s OpenSSH client if <code>ssh</code> is missing.</p></div>
+      </details>
       <details>
         <summary>What does it change on my headset?</summary>
         <div><p>Only what you click. Installs go to your user account on the Frame, and nothing needs <code>sudo</code> except the power buttons. On your computer it adds a <code>Host frame</code> entry to <code>~/.ssh/config</code> and two SSH keys.</p></div>

site/public/js/site.js

@@ -5,8 +5,6 @@ const SITE = {
   kofi: "alexsouthwell",
 };
 
-const RELEASE = `https://github.com/${SITE.repo}/releases/latest/download/`;
-
 // Donate buttons.
 for (const el of document.querySelectorAll("[data-kofi]")) {
   if (SITE.kofi) el.href = `https://ko-fi.com/${SITE.kofi}`;
@@ -15,37 +13,39 @@ for (const el of document.querySelectorAll("[data-kofi]")) {
 for (const el of document.querySelectorAll("[data-needs-kofi]")) el.hidden = !SITE.kofi;
 for (const el of document.querySelectorAll("[data-no-kofi]")) el.hidden = !!SITE.kofi;
 
-// Best guess at the visitor's platform, for the hero button and the download cards.
+// Browser hints identify an OS, not a reliable CPU architecture. Always show
+// the install instructions and all choices before starting a download.
 function detectPlatform() {
   const ua = navigator.userAgent;
   const hint = navigator.userAgentData?.platform || navigator.platform || "";
-  if (/iPhone|iPad|iPod/.test(ua) || (/Mac/.test(hint) && navigator.maxTouchPoints > 1)) return "ios";
-  if (/Android/.test(ua)) return null;
+  if (/iPhone|iPad|iPod|Android/.test(ua) || (/Mac/.test(hint) && navigator.maxTouchPoints > 1)) return null;
   if (/Mac/.test(hint) || /Macintosh/.test(ua)) return "mac";
   if (/Win/.test(hint) || /Windows/.test(ua)) return "windows";
-  if (/Linux/.test(hint) || /Linux/.test(ua)) return /aarch64|arm64/i.test(ua + hint) ? "linux-arm" : "linux";
+  if (/Linux/.test(hint) || /Linux/.test(ua)) return "linux";
   return null;
 }
 
-const PLATFORMS = {
-  mac: { name: "macOS", file: "Frame-Control-mac-arm64.dmg" },
-  windows: { name: "Windows", file: "Frame-Control-Setup-x64.exe" },
-  linux: { name: "Linux", file: "Frame-Control-linux-x86_64.AppImage" },
-  "linux-arm": { name: "Linux (arm64)", file: "Frame-Control-linux-arm64.AppImage" },
-};
-
 const platform = detectPlatform();
 const hero = document.getElementById("hero-download");
-if (hero && PLATFORMS[platform]) {
-  hero.href = RELEASE + PLATFORMS[platform].file;
-  hero.querySelector("[data-label]").textContent = `Download for ${PLATFORMS[platform].name}`;
+if (hero && platform) {
+  hero.href = `#download-${platform}`;
+  const name = { mac: "macOS", windows: "Windows", linux: "Linux" }[platform];
+  hero.querySelector("[data-label]").textContent = `Choose a ${name} download`;
 }
-const card = platform && document.querySelector(`.dl[data-os="${platform.replace("-arm", "")}"]`);
+const card = platform && document.querySelector(`.dl[data-os="${platform}"]`);
 if (card) {
   card.classList.add("mine");
   card.querySelector(".tag").hidden = false;
 }
 
+// Keep linked opening instructions visible, including direct FAQ deep links.
+function revealInstructions() {
+  const target = document.getElementById(location.hash.slice(1));
+  if (target?.tagName === "DETAILS") target.open = true;
+}
+window.addEventListener("hashchange", revealInstructions);
+revealInstructions();
+
 // Latest version number, so the page never goes stale. Fails quietly.
 const versionEls = document.querySelectorAll("[data-version]");
 if (versionEls.length) {

site/test/onboarding.test.mjs

@@ -0,0 +1,59 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { runInNewContext } from 'node:vm';
+
+const script = readFileSync(new URL('../public/js/site.js', import.meta.url), 'utf8');
+const html = readFileSync(new URL('../public/index.html', import.meta.url), 'utf8');
+
+function visit(navigator, hash = '') {
+  const label = { textContent: 'Choose your computer’s download' };
+  const hero = { href: '#download', querySelector: () => label };
+  const cards = Object.fromEntries(['mac', 'windows', 'linux'].map(os => [os, {
+    classes: [], classList: { add(name) { cards[os].classes.push(name); } },
+    tag: { hidden: true }, querySelector() { return this.tag; },
+  }]));
+  const details = { tagName: 'DETAILS', open: false };
+  const listeners = {};
+  const context = {
+    navigator, location: { hash }, window: { addEventListener: (name, fn) => { listeners[name] = fn; } },
+    document: {
+      querySelectorAll: () => [],
+      getElementById: id => id === 'hero-download' ? hero : id === 'mac-opening' ? details : null,
+      querySelector: selector => cards[selector.match(/data-os="([^"]+)"/)[1]],
+    },
+  };
+  runInNewContext(script, context);
+  return { hero, cards, details, listeners, context };
+}
+
+for (const [name, navigator, expected] of [
+  ['Intel Mac', { platform: 'MacIntel', userAgent: 'Macintosh' }, 'mac'],
+  ['Apple Silicon browser with Intel hint', { platform: 'MacIntel', userAgent: 'Macintosh', userAgentData: { platform: 'macOS' } }, 'mac'],
+  ['Windows', { platform: 'Win32', userAgent: 'Windows NT 10.0' }, 'windows'],
+  ['Linux x64', { platform: 'Linux x86_64', userAgent: 'Linux x86_64' }, 'linux'],
+  ['Linux ARM', { platform: 'Linux aarch64', userAgent: 'Linux aarch64' }, 'linux'],
+  ['iPhone', { platform: 'iPhone', userAgent: 'iPhone' }, null],
+  ['iPad desktop mode', { platform: 'MacIntel', userAgent: 'Macintosh', maxTouchPoints: 5 }, null],
+  ['Android', { platform: 'Linux armv8l', userAgent: 'Linux Android' }, null],
+  ['unknown', { userAgent: '' }, null],
+]) {
+  test(`${name} opens choices instead of guessing an installer architecture`, () => {
+    const { hero, cards } = visit(navigator);
+    assert.equal(hero.href, expected ? `#download-${expected}` : '#download');
+    assert.ok(html.includes(`id="${hero.href.slice(1)}"`));
+    assert.deepEqual(Object.keys(cards).filter(os => !cards[os].tag.hidden), expected ? [expected] : []);
+  });
+}
+
+test('opening help expands for direct and in-page links; unknown fragments are safe', () => {
+  const result = visit({ userAgent: '' }, '#mac-opening');
+  assert.equal(result.details.open, true);
+  result.details.open = false;
+  result.context.location.hash = '#unknown';
+  result.listeners.hashchange();
+  assert.equal(result.details.open, false);
+  result.context.location.hash = '#mac-opening';
+  result.listeners.hashchange();
+  assert.equal(result.details.open, true);
+});

tests/control_center.cjs

@@ -23,7 +23,8 @@ function fixture() {
   const page = element('controlCenter');
   page.querySelectorAll = selector => selector === '[data-cc-category]' ? buttons : selector === '[data-cc-metric]' ? metrics : selector === '[data-cc-mac-link]' ? [element('macLink')] : [];
   page.querySelector = selector => selector === '[href="#connection"]' ? element('connectionLink') : cards.find(e=>selector === `[data-cc-card="${e.dataset.ccCard}"]`);
-  return {document:{getElementById:element},element,cards,buttons};
+  const listeners = {};
+  return {document:{hidden:false,getElementById:element,addEventListener(name,callback){listeners[name]=callback;}},listeners,element,cards,buttons};
 }
 function mounted(options = {}) {
   const f = fixture(), calls = [];
@@ -39,8 +40,10 @@ const flush = async () => { for(let i=0;i<12;i++)await Promise.resolve(); };
 // bootstrap, including the real Home-to-Control status handoff. Only unrelated
 // rendering helpers, timers and transport are stubbed.
 function sharedPage({productionApi=false} = {}) {
-  const f=fixture(), requests=[], writes=[], host=deferred(), job=deferred();
-  const context={document:f.document,FrameControlCenter:cc,window:{frameApp:{setUpConnection(){}}},
+  const f=fixture(), requests=[], writes=[], notifications=[], host=deferred(), job=deferred();
+  let now=0;
+  const context={document:f.document,FrameControlCenter:cc,performance:{now:()=>now},
+    window:{frameApp:{setUpConnection(){},notify:async(message,request)=>{notifications.push({message,request});}}},
     Date,setInterval,clearInterval,setTimeout:()=>1,clearTimeout(){},$:f.element,QUICK:[],installing:new Set(),
     battery(){},setVolume(){},renderHome(){},gb:String,dur:String,esc:String,meter(){},toast(){},
     runJob(title,id){context.installing.add(id);return job.promise;},
@@ -52,7 +55,11 @@ function sharedPage({productionApi=false} = {}) {
     watchConnection(){context.watched=true;}};
   vm.createContext(context);
   const stateDeclaration=pageSource.match(/let state = null[^\n]*/)[0];
-  vm.runInContext(stateDeclaration+'\nlet online = true, devGen = 1; const HOST = {computer:"computer"}; window.connDevice="frame-a";',context);
+  vm.runInContext(stateDeclaration+'\nlet online = true, devGen = 1, comfortActive = false; const HOST = {computer:"computer"}; window.connDevice="frame-a";',context);
+  // Load the real alert state machine and DOM wiring used by render, refresh,
+  // setOnline and onConnection; do not stub away their lifecycle behavior.
+  const batteryStart=pageSource.indexOf('class DesktopBatteryAlert'),batteryEnd=pageSource.indexOf('// ---- battery ----',batteryStart);
+  vm.runInContext(pageSource.slice(batteryStart,batteryEnd),context);
   const refreshStart=pageSource.indexOf('let refreshing = null'),refreshEnd=pageSource.indexOf('// ---- our VR HUD',refreshStart);
   const renderStart=pageSource.indexOf('function render(s) {'),renderEnd=pageSource.indexOf('// ---- view ----',renderStart);
   vm.runInContext(pageSource.slice(renderStart,renderEnd)+pageSource.slice(refreshStart,refreshEnd),context);
@@ -64,11 +71,11 @@ function sharedPage({productionApi=false} = {}) {
       const request=deferred();request.path=path;request.opts=opts;requests.push(request);return request.promise;
     };
     Object.assign(context,{renderPill(){},renderConnDlg(){},renderBanner(){},viaText(){},netLabel(){},
-      padReset(){},ctrlReset(){},resetShots(){},closeDevPop(){},loadDevices(){},renderDevices(){},renderTests(){},reloadAll(){},checkContactPrompt(){}});
+      padReset(){},ctrlReset(){},resetShots(){},resetClips(){},closeDevPop(){},loadDevices(){},renderDevices(){},renderTests(){},reloadAll(){},checkContactPrompt(){}});
     vm.runInContext(`const UI_KEY = 'test-only';
       const link = {s:null,device:'frame-a',phase:'connected',rev:0,net:null};
       const disp = {}, gm = {seq:0}, cat = {}, wi = {}, sourceState = {jobs:new Map(),detail:null,detailRequest:0};
-      let viewGen = 0, lastImg = null, lastShot = null, androidApps = [], androidSeq = 0, titlesSeq = 0, page = 'control';
+      let viewGen = 0, lastImg = null, lastShot = null, androidApps = [], androidSeq = 0, titlesSeq = 0, runningGames = [], runningSeq = 0, page = 'control';
       const androidPending = new Set();`,context);
     const apiStart=pageSource.indexOf('const HEADSET_FREE ='),apiEnd=pageSource.indexOf('// What a panel shows',apiStart);
     const onlineStart=pageSource.indexOf('function setOnline('),onlineEnd=pageSource.indexOf('function reloadAll()',onlineStart);
@@ -80,12 +87,48 @@ function sharedPage({productionApi=false} = {}) {
   const hostStart=pageSource.lastIndexOf('api("/api/host").then(h =>'),hostEnd=pageSource.indexOf('</script>',hostStart);
   vm.runInContext(pageSource.slice(hostStart,hostEnd),context);
   const bootstrapStart=pageSource.indexOf('window.frameControlCenter = FrameControlCenter.mount('),bootstrapEnd=pageSource.indexOf('</script>',bootstrapStart);
-  return {...f,context,requests,writes,host,refresh:()=>vm.runInContext('refresh()',context),
+  return {...f,context,requests,writes,notifications,host,setNow(value){now=value;},refresh:()=>vm.runInContext('refresh()',context),
     switchHeadset:()=>vm.runInContext('onConnection({now:Date.now()/1000,phase:"connected",devices_rev:0,device:{id:"frame-b",name:"Second Frame"}})',context),
     installFlatpak:()=>vm.runInContext('installFlatpak("test.app")',context),
     mount(){vm.runInContext(pageSource.slice(bootstrapStart,bootstrapEnd),context);return context.window.frameControlCenter;}};
 }
 const response = data => ({ok:true,status:200,json:async()=>data});
+test('production refresh confirms desktop alerts and failures interrupt confirmation', async () => {
+  const f=sharedPage({productionApi:true});
+  const low=sample();low.battery={percent:15,status:'Discharging',watts:-4};
+  const read=async(now,data=low)=>{
+    f.setNow(now);const pending=f.refresh();
+    f.requests.at(-1).resolve(response(data));await pending;
+  };
+  await read(0);await read(30000);
+  assert.equal(f.notifications.length,0,'desktop alert starts off');
+  f.element('desktopBatteryAlert').checked=true;
+  f.element('desktopBatteryAlert').onchange();
+  await read(60000);
+  const failed=f.refresh();f.requests.at(-1).reject(Error('Status transport failed'));await failed;
+  await read(90000);
+  assert.equal(f.notifications.length,0,'failed status interrupts low-battery confirmation');
+  await read(120000);
+  assert.equal(f.notifications.length,1);
+  assert.match(f.notifications[0].message,/15%.*draining/);
+  assert.equal(f.notifications[0].request,false,'refresh never requests notification permission');
+  await read(150000);
+  assert.equal(f.notifications.length,1,'same episode stays latched');
+  assert.equal(f.requests.length,7,'only explicit existing status reads are used');
+});
+test('production headset switch clears desktop opt-in and pending confirmation', async () => {
+  const f=sharedPage({productionApi:true});
+  f.element('desktopBatteryAlert').checked=true;
+  const low=sample();low.battery={percent:10,status:'Discharging',watts:-3};
+  const pending=f.refresh();f.requests[0].resolve(response(low));await pending;
+  assert.equal(vm.runInContext('desktopBattery.pending.condition',f.context),'low');
+  f.setNow(30000);f.switchHeadset();
+  assert.equal(f.element('desktopBatteryAlert').checked,false);
+  assert.equal(vm.runInContext('desktopBattery.pending',f.context),null);
+  assert.match(f.element('desktopBatteryStatus').textContent,/Headset changed/);
+  f.requests[1].resolve(response(low));await flush();
+  assert.equal(f.notifications.length,0,'new headset cannot inherit the prior opt-in');
+});
 for(const rejection of ['transport','body'])for(const delayedMount of [false,true]) {
   test(`production ${rejection} rejection from A preserves B ${delayedMount ? 'before delayed mount' : 'after mount'}`, async t => {
     const f=sharedPage({productionApi:true});
@@ -165,6 +208,50 @@ test('metrics use real fields, preserve zero, and distinguish unavailable values
   assert.equal(cc.metrics({battery:{percent:0,status:'Discharging'}}).battery,'0%');
   assert.match(cc.metrics({thermalAlerts:[{zone:'battery',tempC:45,limitC:44}]}).thermal,/battery 45 °C ≥ 44 °C/);
 });
+test('battery health distinguishes charging states and optional sensors', () => {
+  for (const status of [null, 'Unknown', 'Unexpected']) {
+    const m = cc.metrics({battery:{percent:100,status,timeToEmpty:3600}});
+    assert.equal(m.batteryDetail,'Charging state unavailable');
+    assert.equal(m.estimate,'Unavailable');
+  }
+  assert.equal(cc.metrics({battery:{status:'Not charging'}}).batteryDetail,'Not charging');
+  assert.equal(cc.metrics({battery:{status:'Full'}}).batteryDetail,'Fully charged');
+  assert.equal(cc.metrics({battery:{status:'Charging',timeToFull:3600}}).estimate,'1 h 0 min to full');
+  assert.equal(cc.metrics({battery:{status:'Discharging',timeToEmpty:600}}).estimate,'10 min remaining');
+  const m = cc.metrics({battery:{cycleCount:0,fullMah:4500,designMah:5000,capacityHealthPercent:90,
+    source:'/sys/class/power_supply/max1720x_bat_7-36',health:'Unknown',tempC:0}});
+  assert.equal(m.cycles,'0'); assert.equal(m.capacityHealth,'90%');
+  assert.equal(m.fullCapacity,'4,500 mAh'); assert.equal(m.batteryTemp,'0 °C');
+  assert.equal(m.batteryHealth,'Unavailable'); assert.match(m.batterySource,/max1720x/);
+  for (const key of ['cycles','fullCapacity','designCapacity','capacityHealth','batterySource','batteryHealth','batteryTemp'])
+    assert.equal(cc.metrics(null)[key],'Unavailable');
+});
+test('battery chip preserves unknown status and does not infer Full at 100%', () => {
+  const f=fixture();
+  const start=pageSource.indexOf('function battery(b, power)');
+  const end=pageSource.indexOf('// hidePopover', start);
+  const context={$:f.element,dur:String}; vm.createContext(context);
+  vm.runInContext(pageSource.slice(start,end),context);
+  context.battery({percent:100,status:'Unknown'},{watts:20});
+  assert.equal(f.element('battState').textContent,'Charging state unavailable');
+  context.battery({percent:50,status:'Not charging'},null);
+  assert.equal(f.element('battState').textContent,'Not charging');
+  context.battery({percent:50,status:'Charging',watts:2,tempC:0},null);
+  assert.match(f.element('battState').textContent,/Charging/);
+  assert.match(f.element('battDetail').textContent,/battery 0°C/);
+  context.battery(null,null);
+  assert.equal(f.element('battState').textContent,'Battery unknown');
+});
+test('new health readings clear after a failed status read', () => {
+  const f=mounted();
+  f.ui.status({...sample(),battery:{...sample().battery,cycleCount:42,capacityHealthPercent:92,
+    fullMah:4600,designMah:5000,source:'/sys/class/power_supply/max1720x_bat_7-36'}});
+  assert.equal(f.element('metric-capacityHealth').textContent,'92%');
+  f.ui.unavailable(Error('Read failed'));
+  for (const key of ['cycles','fullCapacity','designCapacity','capacityHealth','batterySource'])
+    assert.equal(f.element('metric-'+key).textContent,'Unavailable');
+  f.ui.destroy();
+});
 test('audio controller validates before any API call and rejects offline or expired readings', async () => {
   let context={online:true,fresh:true,sample:sample(),device:'frame-a',generation:1},calls=[];
   const controller=cc.createController({api:async(...args)=>{calls.push(args);return {};},getContext:()=>context});
@@ -449,3 +536,67 @@ test('every Control Center workflow reaches its intentional workspace', () => {
   }
   assert.equal(f.run('PAGES.length'),4);
 });
+// Force quit: an explicit check, a confirmation naming the game, and the captured headset.
+function quitPage({confirmAnswer=true, running=[{appid:620,name:'Portal <2>',kind:'steam'}], quit} = {}) {
+  const asked=[], calls=[];
+  const f=mounted({confirm:text=>{asked.push(text);return confirmAnswer;},
+    api:async(path,body,device)=>{calls.push({path,body,device});
+      if(body===undefined)return {running};
+      return quit ? quit(body) : {message:'Quit Portal 2',method:'steam'};}});
+  return Object.assign(f,{asked,apiCalls:calls,click:appid=>f.element('ccRunningList').onclick({target:{closest:()=>({dataset:{ccQuit:String(appid)}})}})});
+}
+test('force quit lists what is running and says so when nothing is', async t => {
+  const f=quitPage({running:[]});t.after(()=>f.ui.destroy());
+  await f.element('ccRunningCheck').onclick();
+  assert.deepEqual(f.apiCalls,[{path:'/api/running',body:undefined,device:'frame-a'}]);
+  assert.equal(f.element('ccRunningResult').textContent,'Nothing is running on the Frame.');
+  assert.equal(f.element('ccRunningList').innerHTML,'');
+  const g=quitPage();t.after(()=>g.ui.destroy());
+  await g.element('ccRunningCheck').onclick();
+  assert.match(g.element('ccRunningList').innerHTML,/Portal &lt;2&gt;<small>Steam game<\/small>.*data-cc-quit="620"/);
+  assert.match(g.element('ccRunningResult').textContent,/^1 running/);
+});
+test('force quit confirms with the unsaved-progress warning before any request', async t => {
+  const f=quitPage({confirmAnswer:false});t.after(()=>f.ui.destroy());
+  await f.element('ccRunningCheck').onclick();
+  f.click(620);await flush();
+  assert.deepEqual(f.asked,['Force quit Portal <2>? Unsaved progress will be lost.']);
+  assert.equal(f.apiCalls.length,1,'declining sends nothing');
+  const g=quitPage();t.after(()=>g.ui.destroy());
+  await g.element('ccRunningCheck').onclick();
+  g.click(620);await flush();
+  assert.deepEqual(g.apiCalls[1],{path:'/api/running',body:{action:'quit',appid:'620'},device:'frame-a'});
+  assert.equal(g.element('ccRunningResult').textContent,'Quit Portal 2');
+  assert.equal(g.element('ccRunningList').innerHTML,'');
+  g.click(999);await flush();
+  assert.equal(g.apiCalls.length,2,'an id that was not listed is ignored');
+});
+test('force quit shows errors, refuses duplicates and offline use, and ignores a switched headset', async t => {
+  const pending=deferred();
+  const f=quitPage({quit:()=>pending.promise});t.after(()=>f.ui.destroy());
+  await f.element('ccRunningCheck').onclick();
+  f.click(620);f.click(620);await flush();
+  assert.equal(f.asked.length,1);
+  assert.match(f.element('ccRunningList').innerHTML,/disabled/);
+  pending.reject(Error("That game isn't running any more"));await flush();
+  assert.equal(f.element('ccRunningResult').textContent,"Couldn’t force quit Portal <2>: That game isn't running any more");
+  assert.doesNotMatch(f.element('ccRunningList').innerHTML,/disabled/);
+  // A switch while quitting: the old answer is dropped and the list cleared.
+  const late=deferred(),g=quitPage({quit:()=>late.promise});t.after(()=>g.ui.destroy());
+  await g.element('ccRunningCheck').onclick();g.click(620);await flush();
+  g.context={online:true,generation:2,device:'frame-b'};g.ui.reset();
+  late.resolve({message:'Quit Portal 2'});await flush();
+  assert.equal(g.element('ccRunningResult').textContent,'');
+  assert.equal(g.element('ccRunningList').innerHTML,'');
+  const h=quitPage();t.after(()=>h.ui.destroy());h.context={online:false,generation:1,device:'frame-a'};
+  await h.element('ccRunningCheck').onclick();
+  assert.equal(h.apiCalls.length,0);
+  assert.match(h.element('ccRunningResult').textContent,/Connect to the Frame/);
+  const controller=cc.createController({api:async()=>assert.fail('no request'),getContext:()=>({online:true,generation:1})});
+  await assert.rejects(controller.forceQuit({appid:'620; reboot'}),/Choose a running game/);
+});
+test('the Control Center finds force quit by what a stuck game looks like', () => {
+  const item=cc.catalog.find(i=>i.id==='forcequit');
+  for(const q of ['frozen game','hung','not responding','kill','stuck app'])assert.ok(cc.matches(item,q,'all'),q);
+  assert.ok(cc.matches(item,'','apps'));
+});

tests/e2e/test_device.py

@@ -45,6 +45,13 @@ class Device(harness.FrameTestCase):
         self.assertRegex(out['message'], r'^copied via Klipper \(\d+ chars\)$')
         self.assertEqual(state()['clipboard'], [text])
 
+    def test_clipboard_comes_back_from_klipper(self):
+        text = 'from the headset: 世界 🎧\n\nwith trailing newlines\n\n'
+        ok('POST', '/api/clipboard', {'text': text})
+        out = ok('POST', '/api/clipboard', {'read': True})
+        self.assertEqual(out['text'], text)
+        self.assertRegex(out['message'], r"^Copied \d+ characters from the headset's clipboard$")
+
     def test_flatpak_install_and_remove(self):
         # Installs run as background jobs (server.start_job); uninstall answers at once.
         job = finished(ok('POST', '/api/flatpak', {'id': 'org.videolan.VLC', 'action': 'install'}))

tests/e2e/test_doctor.py

@@ -0,0 +1,59 @@
+"""Real doctor/SSH against fake-Frame faults; never a real headset."""
+import subprocess
+import sys
+import tempfile
+from pathlib import Path
+
+import harness
+from harness import ROOT, ctl
+
+harness.require()
+
+
+class Doctor(harness.FrameTestCase):
+    def doctor(self, *args):
+        return subprocess.run([sys.executable, str(ROOT / 'scripts/frame_doctor.py'),
+                               '--lan', harness.FAKE_HOST, '--usb', harness.FAKE_HOST, *args],
+                              capture_output=True, text=True, timeout=120)
+
+    def test_disk_full(self):
+        before = self.doctor()
+        self.assertNotIn('BROKEN 4. Steam and storage', before.stdout)
+        ctl('disk-full', 'on')
+        r = self.doctor()
+        self.assertEqual(r.returncode, 1, r.stdout + r.stderr)
+        self.assertIn('BROKEN 4. Steam and storage: Less than 16 MiB free', r.stdout)
+
+    def test_unreachable_asleep(self):
+        ctl('sleep', 'on')
+        r = self.doctor()
+        self.assertEqual(r.returncode, 2, r.stdout + r.stderr)
+        self.assertIn('No authenticated SSH path', r.stdout)
+
+    def test_no_ssh_and_no_devkit(self):
+        ctl('sshd', 'off')
+        ctl('devkit-service', 'off')
+        r = self.doctor()
+        self.assertEqual(r.returncode, 2, r.stdout + r.stderr)
+        self.assertIn('Devkit port did not respond', r.stdout)
+
+    def test_no_keys_but_devkit_available(self):
+        ctl('keys', 'none')
+        r = self.doctor()
+        self.assertEqual(r.returncode, 2, r.stdout + r.stderr)
+        self.assertIn('SSH key rejected', r.stdout)
+        self.assertIn('no pairing request was sent', r.stdout)
+
+    def test_plan_and_before_after_storage(self):
+        with tempfile.TemporaryDirectory() as folder:
+            baseline = str(Path(folder) / 'before.json')
+            ctl('disk-full', 'on')
+            before = self.doctor('--plan', '--save-report', baseline)
+            self.assertEqual(before.returncode, 1, before.stdout + before.stderr)
+            self.assertIn('use Steam storage management', before.stdout)
+            ctl('disk-full', 'off')  # fake fault control, not a doctor repair
+            after = self.doctor('--plan', '--compare-before', baseline)
+            self.assertEqual(after.returncode, 1, after.stdout + after.stderr)
+            self.assertIn('Steam and storage: BROKEN ->', after.stdout)
+            self.assertNotIn('Steam and storage: BROKEN -> BROKEN', after.stdout)
+            self.assertIn('no automatic repair is available', after.stdout)

tests/e2e/test_recovery_kit.py

@@ -0,0 +1,55 @@
+"""Backup and recovery kit through the server against the fake Frame: a Proton game's save
+goes to this computer and back, Steam's sign-in token never leaves the headset."""
+import json
+import shutil
+import tarfile
+import unittest
+from pathlib import Path
+
+import harness
+from harness import api, finished, ok, ssh
+
+harness.require()
+
+SAVE = '.local/share/Steam/steamapps/compatdata/620980/pfx/drive_c/users/steamuser/AppData/LocalLow/Beat Games/Beat Saber/PlayerData.dat'
+
+
+class Backup(harness.FrameTestCase):
+    def test_saves_round_trip_and_secrets_stay(self):
+        ssh(f"mkdir -p ~/'{Path(SAVE).parent}' && printf 'level 7' > ~/'{SAVE}' && "
+            "mkdir -p ~/.steam && printf SECRET > ~/.steam/steam.token")
+        job = finished(ok('POST', '/api/backup', {'action': 'backup', 'kinds': ['saves', 'settings']}), 120)
+        self.assertIsNone(job['error'], job)
+        folder = Path(job['result']['path'])
+        self.addCleanup(shutil.rmtree, str(folder), True)
+        manifest = json.loads((folder / 'manifest.json').read_text())
+        self.assertEqual(manifest['headset']['build'], '20260922.6101926')
+        saves = next(p for p in manifest['parts'] if p['id'] == 'saves:620980')
+        self.assertEqual(saves['label'], 'Beat Saber saves')
+        self.assertEqual([f['path'] for f in saves['files']], [SAVE])
+        for part in manifest['parts']:
+            with tarfile.open(str(folder / part['archive'])) as tar:
+                self.assertFalse([m.name for m in tar if 'steam.token' in m.name])
+        self.assertEqual(ssh('cat ~/.steam/steam.token'), 'SECRET')  # read-only on the headset
+
+        ssh(f"rm ~/'{SAVE}'")
+        name = folder.name
+        plan = {p['id']: p for p in ok('POST', '/api/backup', {'action': 'plan', 'name': name})['parts']}
+        self.assertEqual((plan['saves:620980']['status'], plan['saves:620980']['new']), ('ok', 1))
+        status, out, _ = api('POST', '/api/backup', {'action': 'restore', 'name': name, 'parts': ['saves:620980']})
+        self.assertEqual(status, 400, out)  # not confirmed
+        job = finished(ok('POST', '/api/backup', {'action': 'restore', 'name': name, 'parts': ['saves:620980'],
+                                                  'confirm': True}), 120)
+        self.assertIsNone(job['error'], job)
+        self.assertEqual(ssh(f"cat ~/'{SAVE}'"), 'level 7')
+
+    def test_bad_names_and_session(self):
+        status, out, _ = api('POST', '/api/backup', {'action': 'plan', 'name': '../../etc'})
+        self.assertEqual(status, 400, out)
+        state = ok('POST', '/api/backup', {'action': 'session'})
+        self.assertIn(state['mode'], ('game', 'desktop', 'unknown'))
+        self.assertIsNone(state['selector'])  # the fake has no session switch command
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/e2e/test_running.py

@@ -0,0 +1,82 @@
+"""Force quit (ui/frame_running.py) through the server's HTTP API, against games the
+fake Steam client really runs under its stand-in reaper (fakesteam.REAPER)."""
+import os
+import unittest
+
+import harness
+from harness import api, install_title, launches, ok, ssh, state, wait_for
+
+harness.require()
+
+
+class Running(harness.FrameTestCase):
+    def script_title(self, name, body):
+        folder = self.path(name)
+        os.makedirs(folder)
+        with open(os.path.join(folder, 'run.sh'), 'w') as f:
+            f.write('#!/bin/sh\n' + body)
+        os.chmod(os.path.join(folder, 'run.sh'), 0o755)
+        plan, job = install_title(folder)
+        self.assertIsNone(job['error'], job)
+        return plan['id'], plan['name']
+
+    def running(self, match):
+        return next((g for g in ok('GET', '/api/running')['running'] if match(g)), None)
+
+    def launch_title(self, gid):
+        ok('POST', '/api/titles', {'action': 'launch', 'id': gid})
+        game = wait_for(lambda: self.running(lambda g: g.get('title') == gid), 20, f'{gid} to be running')
+        # The fake's reset doesn't stop programs: don't leave one running for the next test.
+        self.addCleanup(ssh, f"pkill -KILL -f '[d]evkit-game/{gid}/' || true", check=False)
+        return game
+
+    def assert_steam_alive(self, pid):
+        self.assertEqual(ssh(f'kill -0 {pid} && echo alive').strip(), 'alive')
+
+    def test_nothing_running(self):
+        self.assertEqual(ok('GET', '/api/running'), {'running': [], 'message': 'Nothing is running on the Frame'})
+        status, out, _ = api('POST', '/api/running', {'action': 'quit', 'appid': '620'})
+        self.assertEqual(status, 409, out)
+
+    def test_sigterm_quits_a_sideloaded_game(self):
+        gid, name = self.script_title('Hang Game', 'sleep 600 &\nwait\n')
+        steam = ssh('cat ~/.steam/steam.pid').strip()
+        game = self.launch_title(gid)
+        self.assertEqual((game['kind'], game['name']), ('devkit', name))
+        self.assertGreaterEqual(game['processes'], 3)          # reaper, run.sh, sleep
+        out = ok('POST', '/api/running', {'action': 'quit', 'appid': str(game['appid'])})
+        self.assertEqual(out['method'], 'term', out)
+        self.assertEqual(out['message'], f'Force quit {name}')
+        # Steam was asked first, with the shortcut's game id.
+        self.assertEqual(state()['steam']['last_terminate'], game['gameid'])
+        self.assertIsNone(self.running(lambda g: g['appid'] == game['appid']))
+        self.assertEqual(ssh("pgrep -fc '[s]leep 600' || true").strip(), '0')
+        self.assert_steam_alive(steam)
+        done = wait_for(lambda: launches('devkit')[-1].get('exit') is not None and launches('devkit')[-1],
+                        10, 'the reaper to report the exit')
+        self.assertIsNotNone(done['exit'])
+
+    def test_sigkill_when_it_ignores_sigterm(self):
+        gid, name = self.script_title('Stuck Game', "trap '' TERM\nsleep 600 &\nwait\n")
+        steam = ssh('cat ~/.steam/steam.pid').strip()
+        game = self.launch_title(gid)
+        out = ok('POST', '/api/running', {'action': 'quit', 'appid': str(game['appid'])})
+        self.assertEqual(out['method'], 'kill', out)
+        self.assertEqual(out['message'], f'Force quit {name} (it had to be killed)')
+        self.assertIsNone(self.running(lambda g: g['appid'] == game['appid']))
+        self.assertEqual(ssh("pgrep -fc '[s]leep 600' || true").strip(), '0')
+        self.assert_steam_alive(steam)
+
+    def test_steam_game_quits_through_steam(self):
+        ok('POST', '/api/launch', {'appid': 620980})
+        game = wait_for(lambda: self.running(lambda g: g['appid'] == 620980), 20, 'the Steam game to be running')
+        self.assertEqual((game['kind'], game['gameid']), ('steam', '620980'))
+        out = ok('POST', '/api/running', {'action': 'quit', 'appid': '620980'})
+        self.assertEqual(out['method'], 'steam', out)
+        self.assertEqual(state()['steam']['last_terminate'], '620980')
+        self.assertEqual(launches('rungameid')[-1]['exit'], 'terminated')
+        self.assertEqual(ok('GET', '/api/running')['running'], [])
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/fakeframe/rootfs/usr/local/bin/qdbus6

@@ -1,7 +1,9 @@
 #!/usr/bin/env python3
 """Stub for qdbus6: records Klipper setClipboardContents calls, the way
 Frame Control sends text to the headset desktop's clipboard (server.PASTE,
-verified 2026-09-25)."""
+verified 2026-09-25), and answers getClipboardContents with the last one
+(server.COPY). Printing the string and a newline is how qdbus prints a
+returned QString; getClipboardContents itself is a guess, not seen on a headset."""
 import os
 import sys
 
@@ -15,5 +17,10 @@ if args[:3] == ['org.kde.klipper', '/klipper', 'org.kde.klipper.klipper.setClipb
         sys.exit('Could not connect to D-Bus server')
     with fs.update() as s:
         s['clipboard'].append(args[3])
+elif args == ['org.kde.klipper', '/klipper', 'org.kde.klipper.klipper.getClipboardContents']:
+    if not os.environ.get('DBUS_SESSION_BUS_ADDRESS'):
+        sys.exit('Could not connect to D-Bus server')
+    clips = fs.read()['clipboard']
+    sys.stdout.buffer.write((clips[-1] if clips else '').encode() + b'\n')
 else:
     sys.exit(f'qdbus6 stub: unsupported {args}')

tests/fakeframe/rootfs/usr/local/bin/systemctl

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+"""Doctor's read-only systemd queries in a container without a user manager.
+
+Stable NRestarts=0 and inactive keep-awake are harness assumptions, not observed
+device behavior. Real Frame query forms come from the historical doctor runbook
+(2026-09-28, BUILD_ID 20260925.6191901). No service control is emulated here.
+"""
+import sys
+
+args = sys.argv[1:]
+if args in (['--user', 'show', 'steam.service', '-p', 'NRestarts', '--value'],
+            ['--user', 'show', 'steamvr.service', '-p', 'NRestarts', '--value']):
+    print('0')
+elif args == ['--user', 'show', 'fc-keep-awake.service', '-p', 'ActiveState', '--value']:
+    print('inactive')
+else:
+    sys.exit(1)

tests/fakeframe/rootfs/usr/local/lib/fakeframe/cef_shim.js

@@ -79,6 +79,12 @@ function build(steam) {
         return s ? { strShortcutExe: s.exe, strShortcutStartDir: s.start_dir, bShortcutIsVR: !!s.vr } : null;
       },
     },
+    // Guess: the running list as Steam's client code and plugin loaders read it
+    // (SteamUIStore.RunningApps of app overviews); not seen on the Frame. fakesteam
+    // passes the ids of launches that haven't exited.
+    SteamUIStore: {
+      get RunningApps() { return (steam.running || []).map(id => allApps().find(a => a.appid === id) || { appid: id }); },
+    },
     appStore: {
       get allApps() { return allApps(); },
       GetAppOverviewByAppID(id) { return allApps().find(a => a.appid === Number(id)) || null; },
@@ -109,7 +115,8 @@ function build(steam) {
           if (s?.artwork) delete s.artwork[type];
         },
         // Container fallback in frame_android.stop performs the simulated stop.
-        TerminateApp(gameid) { steam.last_terminate = gameid; },
+        // fakesteam ends pid-less launches for the ids in `terminated`.
+        TerminateApp(gameid) { steam.last_terminate = gameid; (steam.terminated ||= []).push(String(gameid)); },
         RemoveShortcut(id) {
           steam.shortcuts = steam.shortcuts.filter(s => s.appid !== Number(id));
           delete steam.compat_tools[String(id)];

tests/fakeframe/rootfs/usr/local/lib/fakeframe/fakesteam.py

@@ -47,6 +47,12 @@ COMPAT_LOG = fs.STEAM_ROOT + '/logs/compat_log.txt'
 DEVTOOLS_PORT = 8080
 TARGET_ID = 'F0CA11ED5EA4ED0000000000000000AB'
 GAME_LOGS = '/var/log/fakeframe'
+# Steam starts a game under its reaper, `reaper SteamLaunch AppId=<id> -- <command>`,
+# which stays the game's parent until it ends (guess for the Frame: that's how Steam
+# launches on Linux desktops and the Steam Deck; docs/steam-games.md). The fake's
+# reaper is bash with that command line: it waits for the game and exits with its status.
+REAPER = fs.STEAM_ROOT + '/ubuntu12_32/reaper'
+REAPER_SH = 'while [ "$1" != "--" ]; do shift; done; shift; "$@" & wait $!'
 
 # The 403 text /register returned while Steam wasn't on "Pair new host"
 # (docs/ssh.md, verified 2026-09-26). approve-ssh-key passes the Steam
@@ -105,11 +111,24 @@ class JS:
                 self._start()
             self.next += 1
             with fs.update() as state:
-                self.proc.stdin.write(json.dumps({'id': self.next, 'expression': expression,
-                                                  'awaitPromise': await_promise, 'steam': state['steam']}) + '\n')
+                # What Steam counts as running: launches that started and haven't exited.
+                running = sorted({l['appid'] for l in state['launches']
+                                  if l.get('started') and l.get('appid') and l.get('exit') is None})
+                self.proc.stdin.write(json.dumps({'id': self.next, 'expression': expression, 'awaitPromise': await_promise,
+                                                  'steam': dict(state['steam'], running=running)}) + '\n')
                 self.proc.stdin.flush()
                 reply = json.loads(self.proc.stdout.readline())
-                state['steam'] = reply['steam']
+                steam = reply['steam']
+                steam.pop('running', None)
+                for gid in map(int, steam.pop('terminated', [])):
+                    appid = gid >> 32 if gid >= 1 << 32 else gid
+                    # Guess: TerminateApp ends a launch the fake didn't really run (a Steam
+                    # game, a Proton title). A real process it leaves alone, so Frame
+                    # Control's own fallback (SIGTERM, SIGKILL) is what the e2e tests see.
+                    for l in state['launches']:
+                        if l.get('appid') == appid and l.get('exit') is None and not l.get('pid'):
+                            l['exit'] = 'terminated'
+                state['steam'] = steam
             return reply['result']
 
 
@@ -253,8 +272,10 @@ def add_launch(record):
         os.makedirs(GAME_LOGS, exist_ok=True)
         with open(f'{GAME_LOGS}/{label}.log', 'ab') as log:
             try:
-                proc = subprocess.Popen([path], cwd=cwd if os.path.isdir(cwd) else HOME, env={**os.environ, **env},
-                                        stdin=subprocess.DEVNULL, stdout=log, stderr=log, start_new_session=True)
+                argv = [REAPER, '-c', REAPER_SH, 'reaper', 'SteamLaunch', f"AppId={record['appid']}", '--', path]
+                proc = subprocess.Popen(argv, executable='/bin/bash', cwd=cwd if os.path.isdir(cwd) else HOME,
+                                        env={**os.environ, **env}, stdin=subprocess.DEVNULL, stdout=log, stderr=log,
+                                        start_new_session=True)
                 record['pid'] = proc.pid
             except OSError as e:
                 record.update(pid=None, exec_error=str(e))

tests/fakegh/gh

@@ -3,8 +3,8 @@
 tests/test_release_workflow.py. Serves the releases in $FAKEGH_RELEASES (a JSON list,
 drafts included) and the tags in $FAKEGH_TAGS (space-separated); an upload's body is
 written to $FAKEGH_UPLOAD. Every call is appended to $FAKEGH_LOG as a JSON line.
-Anything else fails, so the script under test can't fall back to `gh release ...`
-(GraphQL) unnoticed. POST .../releases (release.yml's draft step) answers as release
+Anything else fails; `gh release upload` works only when a release-workflow test
+explicitly sets FAKEGH_ALLOW_RELEASE_UPLOAD=1. POST .../releases (release.yml's draft step) answers as release
 $FAKEGH_NEW_ID (default 9001) without adding it to the listing, like GitHub's list
 lagging a fresh draft. With jq installed, --jq filters a response the way gh does
 (raw strings, compact JSON)."""
@@ -17,6 +17,13 @@ import sys
 args = sys.argv[1:]
 with open(os.environ["FAKEGH_LOG"], "a") as f:
     f.write(json.dumps(args) + "\n")
+if args[:2] == ["release", "upload"] and os.environ.get("FAKEGH_ALLOW_RELEASE_UPLOAD") == "1":
+    releases = json.load(open(os.environ["FAKEGH_RELEASES"]))
+    if os.environ.get("FAKEGH_UPLOAD_ERROR"):
+        sys.exit(os.environ["FAKEGH_UPLOAD_ERROR"])
+    if not any(r.get("tag_name") == args[2] for r in releases):
+        sys.exit("release not found")
+    sys.exit(0)
 if not args or args[0] != "api":
     sys.exit("fakegh: only `gh api` is supported: %r" % args)
 
@@ -80,6 +87,12 @@ elif method == "PATCH" and endpoint.startswith(repo + "releases/"):
     rid = endpoint[len(repo + "releases/"):]
     if not rid.isdigit():  # what GitHub said to v0.4.2's PATCH of releases/ (an empty id)
         sys.exit("gh: Not Found (HTTP 404)")
+    if os.environ.get("FAKEGH_ALLOW_RELEASE_UPLOAD") == "1":
+        for item in releases:
+            if str(item["id"]) == rid:
+                item.update(fields)
+        with open(os.environ["FAKEGH_RELEASES"], "w") as f:
+            json.dump(releases, f)
     page = "https://github.com/saphid/frame-control/releases/tag/%s" % fields.get("tag_name")
     answer({"id": int(rid), "tag_name": fields.get("tag_name"), "html_url": page},
            "published %s at %s" % (fields.get("tag_name"), page))

tests/page/desk_panels.mjs

@@ -40,6 +40,15 @@ function page(answer) {
   if (!p.noPanelWhy().startsWith("The headset's desktop is running")) fail("why for capture: " + p.noPanelWhy());
   if (!p.ctrlTarget().why.startsWith("The headset's desktop is running")) fail("why for control: " + p.ctrlTarget().why);
 }
+// An unreadable list is unknown: both Capture and Control retain that distinction.
+{
+  const why = "Frame Control couldn't read gamescope's panel list, so it can't tell whether an app panel is open. " +
+    "Check that SteamVR is running in the headset, then try again or use the Headset view. " +
+    "If this persists, report your SteamOS version and this exact message.";
+  const p = page(() => ({ panels: [], focus: null, why }));
+  await p.loadPanels();
+  if (p.noPanelWhy() !== why || p.ctrlTarget().why !== why) fail("unreadable list reason lost");
+}
 // An older headset script without "why": the generic advice.
 {
   const p = page(() => ({ panels: [], focus: null }));

tests/page/store_detail.mjs

@@ -13,13 +13,13 @@ function grab(name) {
   if (start < 0) fail(`no top-level ${name} in index.html`);
   let depth = 0;
   for (let i = start; i < lines.length; i++) {
-    for (const c of lines[i]) depth += c === "{" ? 1 : c === "}" ? -1 : 0;
+    for (const c of lines[i]) depth += c === "{" || c === "[" ? 1 : c === "}" || c === "]" ? -1 : 0;
     if (depth <= 0) return lines.slice(start, i + 1).join("\n") + "\n";
   }
   fail(`unbalanced ${name}`);
 }
 const names = ["esc", "storeName", "storeHue", "storeInitial", "storeText", "storeOpenSource", "sourcePage", "storeImage",
-               "GLYPH_VR", "GLYPH_APP", "RUNS", "storeRuns", "storeKind", "storeArt", "storeIcon", "sourceMark", "currentOffer", "detailBadges", "renderAppDetail", "renderAppDetailBody",
+               "GLYPH_VR", "GLYPH_APP", "RUNS", "storeRuns", "storeReportDetails", "storePickEligible", "STORE_CATS", "storeCat", "storeCard", "storeRow", "storeKind", "storeArt", "storeIcon", "sourceMark", "currentOffer", "detailBadges", "renderAppDetail", "renderAppDetailBody",
                "updateInstall", "openStoreApp", "loadOfferDetails", "installStoreApp"];
 const code = names.map(grab).join("");
 
@@ -34,7 +34,7 @@ function page(api = async () => ({}), androidApps = []) {
   const document = { activeElement: null, querySelector: () => null };
   const console = { error() {} };
   const calls = [];
-  const fns = new Function("$", "sourceState", "document", "console", "api", "androidApps", "runJob", "loadAndroid", "act", "window", "devGen", code + "; return { renderAppDetail, openStoreApp };")(
+  const fns = new Function("$", "sourceState", "document", "console", "api", "androidApps", "runJob", "loadAndroid", "act", "window", "devGen", code + "; return { renderAppDetail, openStoreApp, storeCard, storeRow, storePickEligible };")(
     $, sourceState, document, console, (...a) => { calls.push(a); return api(...a); }, androidApps,
     async (title, key, work) => work(), () => {}, async (title, work) => work(),
     { open() { fail("an in-app installation opened an external page"); } }, 0);
@@ -114,4 +114,31 @@ for (const [job, expected] of [[null, 1], [{ done: false }, 0],
   if (installs.some(([, body]) => body.source !== offer.source || body.id !== offer.id)) fail("installed a different offer");
   if (p.calls.some(([path]) => path === "/api/android")) fail("hero Install launched an already installed app");
 }
+
+// Report warnings appear on real cards, shelves and details; they are advisory.
+for (const [kind, tone, label] of [['no', 'warning', 'Reported not working'], ['maybe', 'issues', 'Reported issues']]) {
+  const p = page();
+  const o = {...offer, verdict: {tone, label: label+' on the Frame'},
+    compat_report: {verdict: kind, lines: ['Reported <unsafe> notes', '2 reports, 0 working']}};
+  const app = {name: o.name, offers: [o]};
+  p.sourceState.apps = [app];
+  p.sourceState.detail = {app, choice: 0};
+  const card = p.storeCard(app), shelf = p.storeRow('VR picks', 'Synthetic fixtures', [app]);
+  if (!card.includes('>'+label+'</span>') || !shelf.includes('>'+label+'</span>')) fail('warning missing on card or shelf');
+  if (!p.renderAppDetail()) fail('report detail did not render');
+  const html = p.els.detailBody.innerHTML;
+  if (!html.includes('Saved compatibility reports') || !html.includes('Reported &lt;unsafe&gt; notes')) fail('report evidence missing or unescaped');
+  if (html.includes('Reported <unsafe>')) fail('report notes injected HTML');
+  if (p.els.detailInstall.disabled || p.els.detailInstall.textContent !== 'Install on the Frame') fail('report disabled installation');
+  if (kind==='no' && p.storePickEligible(o)) fail('broken report is eligible for featured/VR picks');
+  // A positive report cannot remove a hard blocker. Negative evidence stays visible too.
+  for (const reportKind of [kind, 'works']) {
+    const blocked = {...o, verdict: {tone: 'blocked', label: 'No arm64 build'}, compat_report: {...o.compat_report, verdict: reportKind}};
+    app.offers = [blocked];
+    if (!p.renderAppDetail() || !p.els.detailInstall.disabled) fail('report overrode hard blocker');
+    if (p.storePickEligible(blocked)) fail('blocked app eligible for picks');
+    if (reportKind!=='works' && !p.storeCard(app).includes('>'+label+'</span>')) fail('hard blocker hid report warning');
+  }
+}
+
 console.log("ok");

tests/power_desktop.cjs

@@ -0,0 +1,77 @@
+const {test}=require('node:test');
+const assert=require('node:assert/strict');
+const {workspaceFixture,html}=require('./workspace_fixture.cjs');
+function fixture() {
+  const f=workspaceFixture();
+  Object.assign(f.context, {clearTimeout(){},setTimeout(){},UI_KEY:'1',encodeURIComponent});
+  const formats=['html','json','csv'].map(format=>Object.assign(f.el('download-'+format),{dataset:{powerFormat:format}}));
+  const query=f.context.document.querySelectorAll;
+  f.context.document.querySelectorAll=s=>s==='[data-power-format]'?formats:query(s);
+  f.formats=formats;
+  f.run(html.slice(html.indexOf('// ---- Read-only power observation ----'),html.indexOf('// ---- Read-only game storage ----')));
+  return f;
+}
+const state={id:'abc',headset:{alias:'old-frame'},requested:12,received:3,running:true,stopped:null};
+test('Tools navigation loads the report and renders accessible progress',async()=>{
+  const f=fixture();let calls=0;f.context.api=async()=>{calls++;return state;};
+  f.navigate('#powerReport');await new Promise(setImmediate);
+  assert.equal(f.activePage,'tools');assert.equal(f.el('powerReport').hidden,false);
+  assert.equal(f.el('powerReport').parentNode,f.el('toolWorkspace'));
+  assert.equal(calls,1);assert.equal(f.el('powerProgress').value,3);
+  assert.equal(f.el('powerStart').disabled,true);assert.equal(f.el('powerStop').disabled,false);
+  assert.match(f.el('powerStatus').textContent,/Headset: old-frame.*3 of 12.*Observing/);
+});
+test('incomplete result preserves original identity and start becomes available',()=>{
+  const f=fixture();f.context.sample={...state,running:false,stopped:'Headset switched; samples retained'};
+  f.run('renderPower(sample)');
+  assert.match(f.el('powerStatus').textContent,/old-frame.*Incomplete: Headset switched/);
+  assert.equal(f.el('powerStart').disabled,false);assert.equal(f.el('powerStop').disabled,true);
+});
+test('stop submits observation identity and keeps progress visible',async()=>{
+  const f=fixture(),calls=[];f.context.sample=state;f.run('renderPower(sample)');
+  f.context.api=async(path,body)=>{calls.push([path,body]);return {...state,running:false,stopped:'Stopped by user'};};
+  await f.el('powerStop').onclick();
+  assert.equal(calls[0][0],'/api/power');assert.equal(calls[0][1].action,'stop');assert.equal(calls[0][1].id,'abc');
+  assert.equal(f.el('powerProgress').value,3);assert.match(f.el('powerStatus').textContent,/Incomplete/);
+});
+test('old polls cannot overwrite newer report and retry explains retained samples',async()=>{
+  const f=fixture(),pending=[];f.context.api=()=>new Promise((resolve,reject)=>pending.push({resolve,reject}));
+  const first=f.run('loadPower()'),second=f.run('loadPower()');
+  pending[1].resolve({...state,running:false,stopped:'Disconnected'});await second;
+  const current=f.el('powerStatus').textContent;pending[0].resolve(state);await first;
+  assert.equal(f.el('powerStatus').textContent,current);
+  const next=f.run('loadPower()');pending[2].reject(new Error('Offline'));await next;
+  assert.match(f.el('powerStatus').textContent,/Offline.*Received samples remain/);
+});
+test('start failure remains actionable and does not imply success',async()=>{
+  const f=fixture();f.context.api=async()=>{throw new Error('Smoke session active');};
+  await f.el('powerStart').onclick();assert.match(f.el('powerStatus').textContent,/Smoke session/);
+  assert.equal(f.el('powerStart').disabled,false);
+});
+test('download captures observation ID, fetches an authenticated blob and names the file',async()=>{
+  const f=fixture(),requests=[],saved=[];
+  f.context.sample={...state,running:false,stopped:'Disconnected'};f.run('renderPower(sample)');
+  f.context.fetch=async(url,opts)=>{requests.push([url,opts]);return {ok:true,blob:async()=>({report:true})};};
+  f.context.URL={createObjectURL:()=> 'blob:report',revokeObjectURL(){}};
+  f.context.document.createElement=()=>({click(){saved.push({href:this.href,name:this.download});}});
+  await f.formats[0].onclick();
+  assert.equal(requests[0][0],'/api/power/report?id=abc&format=html');
+  assert.equal(requests[0][1].headers['X-Frame-UI'],'1');
+  assert.deepEqual(saved,[{href:'blob:report',name:'frame-power-abc.html'}]);
+  assert.match(f.el('powerSaveStatus').textContent,/Download requested/);
+  f.context.fetch=async()=>({ok:false,json:async()=>({error:'Report replaced'})});
+  await f.formats[0].onclick();
+  assert.match(f.el('powerSaveStatus').textContent,/Download failed: Report replaced/);
+  assert.equal(f.formats[0].disabled,false);
+});
+test('packaging guard requires shared modules and detects missing resources',()=>{
+  const fs=require('node:fs'),os=require('node:os'),path=require('node:path');
+  const guard=require('../app/build/check-resources');const tmp=fs.mkdtempSync(path.join(os.tmpdir(),'power-resources-'));
+  try {
+    for(const rel of guard.REQUIRED) {const file=path.join(tmp,rel);fs.mkdirSync(path.dirname(file),{recursive:true});fs.writeFileSync(file,'test');}
+    assert.deepEqual(guard.missing(tmp),[]);
+    for(const rel of ['ui/frame_power.py','ui/frame_status.py','scripts/frame_power_sample.py','scripts/frame_power_report.py']) {
+      assert.ok(guard.REQUIRED.includes(rel));fs.unlinkSync(path.join(tmp,rel));assert.ok(guard.missing(tmp).includes(rel));
+    }
+  } finally {fs.rmSync(tmp,{recursive:true,force:true});}
+});

tests/sandbox.py

@@ -22,6 +22,7 @@ os.environ["FRAME_CONTROL_DATA_DIR"] = _dir
 os.environ["FRAME_CONTROL_TELEMETRY"] = "0"
 # A maintainer's machine holds the database key; send anything that slips through nowhere.
 os.environ["FRAME_COMPAT_DB_URL"] = "http://127.0.0.1:9"
+os.environ["FRAME_COMPAT_SEARCH_REPORTS"] = "0"  # server subprocesses never start real report readers
 
 # A throwaway home, so Path.home() / "~" land here: ~/.ssh (config, host-key pins,
 # its lock file) and the other per-user folders some modules use. A server started

tests/smoke/frame_smoke.py

@@ -13,11 +13,12 @@ BUILD_ID in tests/smoke/results/<time>-<BUILD_ID>.json (git-ignored):
   (someone has to open Settings > Developer > Pair new host and approve it in
   the headset), checked, and taken out of authorized_keys again.
 
-Everything it installs is removed again, also when a step fails: the titles
-(named fc_smoke_*, and leftovers of an interrupted run first), their Steam
+Everything it installs is removed again, also when a step fails: the reserved
+fc_smoke_{arm64,x86_64,exe} titles (and legacy leftovers first), their Steam
 shortcuts, the paired key, and ~/devkit-utils if it wasn't there before (if it
 was, it stays, synced to this checkout as Frame Control always does). A
-cleanup that fails is a failed step.
+cleanup that fails is a failed step. Test-owned processes are stopped and
+rechecked around deletion; shared Proton services are never stopped by name.
 
 Usage: python3 tests/smoke/frame_smoke.py [--pair]     (or scripts/frame-smoke.sh)
 Env:   FRAME_ALIAS (default frame), FRAME_SMOKE_RESULTS (default tests/smoke/results)
@@ -45,11 +46,17 @@ import frame_android  # noqa: E402
 import frame_connect  # noqa: E402
 import frame_titles  # noqa: E402
 import tiny_programs  # noqa: E402
+import stop_processes  # noqa: E402
 
 RESULTS = Path(os.environ.get('FRAME_SMOKE_RESULTS') or HERE / 'results')
 PREFIX = 'fc_smoke_'
-# Earlier runs named titles fc-smoke*, which Steam refused to register but left on disk.
-OLD_PREFIX = 'fc-smoke'
+
+
+def stop_titles(ids):
+    """Run the same bounded, PID-safe helper used by the local process tests."""
+    return json.loads(frame_android.ssh(
+        'python3 - ' + ' '.join(shlex.quote(gid) for gid in sorted(ids)),
+        input=(HERE / 'stop_processes.py').read_text(), timeout=20))
 
 
 class Smoke:
@@ -172,14 +179,17 @@ def title_cycle(smoke, kind, folder):
         return detail
 
     def remove():
+        stopped = stop_titles({gid})
         frame_titles.remove(gid)
+        # A wrapper could have launched a child just as deletion completed.
+        after = stop_titles({gid})
         left = ssh(f'ls -d ~/devkit-game/{gid} ~/devkit-game/{gid}-*.json 2>/dev/null || true').strip()
         if left:
             raise AssertionError(f'left behind: {left}')
         if gid in {t['id'] for t in frame_titles.list_titles()}:
             raise AssertionError(f'{gid} is still listed')
         smoke.installed.discard(gid)
-        return {'removed': gid}
+        return {'removed': gid, 'process_cleanup': [stopped, after]}
 
     if smoke.step(f'{kind}: install', install)['ok']:
         smoke.step(f'{kind}: launch', launch)
@@ -187,15 +197,21 @@ def title_cycle(smoke, kind, folder):
 
 
 def cleanup(smoke):
-    """Remove this run's titles and any fc_smoke_* an interrupted run left: the folder,
-    its json files, and (through steamos-delete) Steam's shortcut. Raises if anything stays."""
+    """Stop reserved smoke processes and remove their titles and shortcuts.
+
+    Legacy fc-smoke-* IDs are included; arbitrary similarly named titles are
+    never removed. Raises if any owned process, file or shortcut stays.
+    """
     problems = []
     try:
-        ids = {t['id'] for t in frame_titles.list_titles() if t['id'].startswith((PREFIX, OLD_PREFIX))}
+        ids = {t['id'] for t in frame_titles.list_titles() if t['id'] in stop_processes.IDS}
     except frame_android.FrameError as e:
         ids = set()
         problems.append(f'could not list titles: {e}')
     ids |= smoke.installed
+    # Scan every reserved ID, even when a prior run removed its folder and
+    # shortcut but left Proton running. Stop before removing any more files.
+    stopped = stop_titles(stop_processes.IDS)
     gone = set()
     for gid in sorted(ids):
         try:
@@ -226,9 +242,10 @@ def cleanup(smoke):
                     smoke.installed.discard(gid)
         except (frame_android.FrameError, AssertionError) as e:
             problems.append(f"syncing Steam's shortcuts: {e}")
+    after = stop_titles(stop_processes.IDS)
     if problems:
         raise AssertionError('; '.join(problems))
-    return {'removed': sorted(ids)}
+    return {'removed': sorted(ids), 'process_cleanup': [stopped, after]}
 
 
 # Runs on the Frame: drop the lines holding one key from authorized_keys, writing a
@@ -307,15 +324,17 @@ def main():
     # Frame Control copies Valve's devkit tools to ~/devkit-utils on the first install
     # (as Valve's client does). If they weren't there before, they go again at the end.
     had_utils = ssh('test -d ~/devkit-utils && echo yes || true').strip() == 'yes'
-    smoke.step('cleanup: leftovers from earlier runs', cleanup, smoke)
+    ready = smoke.step('cleanup: leftovers from earlier runs', cleanup, smoke)['ok']
     folder = tempfile.mkdtemp(prefix='frame-smoke-')
     try:
-        smoke.step('devkit service: properties.json', properties)
-        smoke.step('status', status, build)
-        for kind in ('arm64', 'x86_64', 'exe'):
-            title_cycle(smoke, kind, folder)
-        if args.pair:
-            smoke.step('devkit pairing (throwaway key)', pair, folder)
+        # Do not overwrite a leftover title when safe process cleanup failed.
+        if ready:
+            smoke.step('devkit service: properties.json', properties)
+            smoke.step('status', status, build)
+            for kind in ('arm64', 'x86_64', 'exe'):
+                title_cycle(smoke, kind, folder)
+            if args.pair:
+                smoke.step('devkit pairing (throwaway key)', pair, folder)
     finally:
         smoke.step('cleanup: everything this run installed', cleanup, smoke)
         if not had_utils:

tests/smoke/stop_processes.py

@@ -0,0 +1,91 @@
+"""Linux-only smoke cleanup helper, sent over SSH before deleting test files.
+
+Only exact, reserved smoke title directories establish ownership. Never signal
+by process name, process group, Steam app id, or a shared Wine/Proton prefix.
+"""
+import json
+import os
+from pathlib import Path
+import signal
+import sys
+import time
+
+IDS = frozenset(prefix + kind for prefix in ('fc_smoke_', 'fc-smoke-')
+                for kind in ('arm64', 'x86_64', 'exe'))
+
+
+def owned(pid, roots):
+    """Require our uid and an exact cwd/exe or individual absolute argv path.
+
+    /proc retains a deleted cwd/exe with ' (deleted)' appended. This also lets
+    the final sweep catch an older run whose title was already removed.
+    """
+    proc = Path('/proc') / str(pid)
+    try:
+        if pid == os.getpid() or proc.stat().st_uid != os.getuid():
+            return False
+        state = (proc / 'stat').read_text().rsplit(')', 1)[1].split()[0]
+        if state == 'Z':
+            return False
+        paths = []
+        for key in ('cwd', 'exe'):
+            try:
+                paths.append(os.readlink(proc / key).removesuffix(' (deleted)'))
+            except (FileNotFoundError, PermissionError):
+                pass
+        try:
+            paths += os.fsdecode((proc / 'cmdline').read_bytes()).split('\0')
+        except PermissionError:
+            pass
+        return any(path == root or path.startswith(root + '/')
+                   for path in paths for root in roots)
+    except (FileNotFoundError, ProcessLookupError, PermissionError):
+        return False
+
+
+def candidates(roots):
+    return sorted(int(p.name) for p in Path('/proc').iterdir()
+                  if p.name.isdigit() and owned(int(p.name), roots))
+
+
+def stop(ids, grace=3):
+    if not ids or not set(ids) <= IDS:
+        raise ValueError('only reserved smoke title IDs may be stopped')
+    if not hasattr(os, 'pidfd_open') or not hasattr(signal, 'pidfd_send_signal'):
+        raise RuntimeError('safe smoke cleanup requires Linux Python with pidfd support')
+    roots = [str(Path.home() / 'devkit-game' / gid) for gid in ids]
+    stopped = set()
+    for sig in (signal.SIGTERM, signal.SIGKILL):
+        # Re-scan while waiting: wrappers can spawn a child during shutdown.
+        deadline = time.monotonic() + grace
+        while True:
+            pids = candidates(roots)
+            if not pids:
+                return {'stopped_pids': sorted(stopped)}
+            for pid in pids:
+                try:
+                    fd = os.pidfd_open(pid)
+                except ProcessLookupError:
+                    continue
+                try:
+                    # Open first, then revalidate ownership. The handle cannot
+                    # signal an unrelated process if this numeric PID is reused.
+                    if owned(pid, roots):
+                        try:
+                            signal.pidfd_send_signal(fd, sig)
+                            stopped.add(pid)
+                        except ProcessLookupError:
+                            pass
+                finally:
+                    os.close(fd)
+            if time.monotonic() >= deadline:
+                break
+            time.sleep(0.1)
+    left = candidates(roots)
+    if left:
+        raise RuntimeError(f'smoke processes survived cleanup: {left}')
+    return {'stopped_pids': sorted(stopped)}
+
+
+if __name__ == '__main__':
+    print(json.dumps(stop(sys.argv[1:])))

tests/storage.cjs

@@ -0,0 +1,50 @@
+const {test}=require('node:test');
+const assert=require('node:assert/strict');
+const {workspaceFixture,html}=require('./workspace_fixture.cjs');
+function fixture() {
+  const f=workspaceFixture();
+  const start=html.indexOf('// ---- Read-only game storage ----');
+  f.run(html.slice(start,html.indexOf('// ---- Backup and recovery kit',start)));
+  const size=html.indexOf('function sizeText(');
+  f.run(html.slice(size,html.indexOf('const backupKinds',size)));
+  return f;
+}
+const sample={home:{state:'ok',total:1000,free:200,used:700},discovery:'permission-denied',libraries:[{
+  path:'<img onerror=alert(1)>',capacity:{state:'missing'},state:'partial',gameBytes:10,toolBytes:0,
+  recordedBytes:10,unknownSizes:1,issues:[{file:'bad.acf',state:'invalid-metadata'}],
+  apps:[{appid:'1',name:'<script>bad</script>',bytes:null,kind:'game'},{appid:'2',name:'Zero',bytes:0,kind:'game'}]}]};
+test('navigation reaches storage and refresh runs once per visit',()=>{
+  const f=fixture();let calls=0;f.context.loadStorage=()=>calls++;
+  f.navigate('#storage');assert.equal(f.activePage,'tools');assert.equal(f.el('storage').hidden,false);
+  assert.equal(f.el('storage').parentNode,f.el('toolWorkspace'));assert.equal(calls,1);
+});
+test('unknown, shared capacity, partial discovery and untrusted names remain explicit',()=>{
+  const f=fixture();f.context.sample=sample;const out=f.run('renderStorage(sample)');
+  assert.match(out,/Permission denied/);assert.match(out,/Missing or disconnected/);
+  assert.match(out,/Unknown/);assert.match(out,/0 bytes/);assert.match(out,/Partial inventory/);
+  assert.match(out,/must not be added/);assert.match(out,/Other usage is unmeasured/);
+  assert.match(out,/&lt;script&gt;/);assert.doesNotMatch(out,/<script>|<img/);
+});
+test('refresh clears old data, ignores earlier requests and shows offline failure',async()=>{
+  const f=fixture(),pending=[];
+  f.context.api=()=>new Promise((resolve,reject)=>pending.push({resolve,reject}));
+  f.el('storageResult').innerHTML='old data';
+  const first=f.run('loadStorage()'),second=f.run('loadStorage()');
+  assert.match(f.el('storageResult').textContent,/Reading/);
+  pending[1].resolve(sample);await second;
+  const current=f.el('storageResult').innerHTML;
+  pending[0].resolve({...sample,libraries:[]});await first;
+  assert.equal(f.el('storageResult').innerHTML,current);
+  const last=f.run('loadStorage()');pending[2].reject(new Error('Offline'));await last;
+  assert.match(f.el('storageResult').textContent,/Storage unavailable: Offline/);
+});
+test('a response or error from another headset cannot update the view',async()=>{
+  for(const fail of [false,true]) {
+    const f=fixture();let resolve,reject;
+    f.context.api=()=>new Promise((yes,no)=>{resolve=yes;reject=no;});
+    const request=f.run('loadStorage()');f.context.devGen++;
+    f.el('storageResult').textContent='New headset';
+    fail?reject(new Error('Old headset')):resolve(sample);await request;
+    assert.equal(f.el('storageResult').textContent,'New headset');assert.equal(f.el('storageResult').innerHTML,'');
+  }
+});

tests/test_android_import.py

@@ -1,6 +1,11 @@
 """Local APK/OBB backups: inspect as a unit, verify the target, and finish setup."""
 import sandbox  # noqa: F401
 import io
+import json
+import shutil
+import stat
+import subprocess
+import zipfile
 from pathlib import Path
 import sys
 import tempfile
@@ -173,5 +178,152 @@ class StagingTests(unittest.TestCase):
                          {'android': False})
 
 
+class BundleTests(unittest.TestCase):
+    setUp = BackupTests.setUp
+    tearDown = StagingTests.tearDown
+    def bundle(self, entries=None, suffix='.xapk'):
+        path = self.root / ('backup' + suffix)
+        path.write_bytes(apk(entries if entries is not None else {
+            'backup/game.apk': self.apk.read_bytes(),
+            f'backup/Android/obb/{PKG}/{self.obb[0].name}': b'game data',
+            'backup/manifest.json': b'{"package_name":"untrusted.metadata"}',
+        }))
+        return path
+
+    def test_all_explicit_extensions_use_current_preview_and_cancel_cleanup(self):
+        for suffix in ('.xapk', '.apks', '.apkm'):
+            with self.subTest(suffix=suffix):
+                source = self.bundle(suffix=suffix)
+                with patch.object(backup.android, 'ssh') as ssh:
+                    read = server.android_backup({'action': 'inspect', 'paths': [str(source)]})
+                ssh.assert_not_called()
+                self.assertEqual(read['plan']['package'], PKG)
+                self.assertEqual(read['plan']['obb'][0]['name'], self.obb[0].name)
+                folders = list(server._android_backups[read['token']]['dirs'])
+                server.android_backup({'action': 'discard', 'token': read['token']})
+                self.assertTrue(all(not Path(p).exists() for p in folders))
+                self.assertTrue(source.exists())
+
+    def test_browser_upload_bundle_is_staged_and_removed_with_extraction(self):
+        source = self.bundle()
+        token = server.android_backup({'action': 'begin'})['token']
+        class Request:
+            headers = {'X-Filename': source.name, 'X-Mode': 'android-backup',
+                       'X-Android-Backup': token, 'Content-Length': str(source.stat().st_size)}
+            rfile = io.BytesIO(source.read_bytes())
+        server.Handler.upload(Request())
+        read = server.android_backup({'action': 'inspect', 'token': token})
+        self.assertEqual(read['plan']['package'], PKG)
+        self.assertEqual(len(server._android_backups[token]['dirs']), 2)
+        folders = list(server._android_backups[token]['dirs'])
+        server.android_backup({'action': 'discard', 'token': token})
+        self.assertTrue(all(not Path(p).exists() for p in folders))
+
+    def test_reject_layouts_before_any_headset_access_and_cleanup_failed_stage(self):
+        cases = [
+            ({'base.apk': self.apk.read_bytes(), 'split.apk': self.apk.read_bytes()}, 'Split APK'),
+            ({'base.apk': self.apk.read_bytes(), f'Android/data/{PKG}/save': b'private'}, 'restore'),
+            ({'base.apk': self.apk.read_bytes(), 'main.1.org.other.game.obb': b'wrong'}, 'does not belong'),
+            ({'base.apk': self.apk.read_bytes(), '../outside.obb': b'bad'}, 'unsafe'),
+            ({'base.apk': self.apk.read_bytes(), '/outside.obb': b'bad'}, 'unsafe'),
+            ({'base.apk': self.apk.read_bytes(), 'CON.apk': b'bad'}, 'unsafe'),
+            ({'base.apk': self.apk.read_bytes(), 'other.exe': b'bad'}, 'Unsupported'),
+            ({'base.apk': self.apk.read_bytes(), 'BASE.apk': b'bad'}, 'duplicate'),
+            ({'manifest.json': b'{}'}, 'standalone APK'),
+        ]
+        for entries, message in cases:
+            with self.subTest(message=message), patch.object(backup.android, 'ssh') as ssh:
+                source = self.bundle(entries)
+                with self.assertRaisesRegex(server.Failure, message):
+                    server.android_backup({'action': 'inspect', 'paths': [str(source)]})
+                self.assertFalse(server._android_backups)
+                ssh.assert_not_called()
+                self.assertTrue(source.exists())
+
+    def test_links_limits_bad_zip_and_mixed_selection_are_refused(self):
+        source = self.bundle({'base.apk': self.apk.read_bytes()})
+        link = zipfile.ZipInfo('link.apk')
+        link.external_attr = (stat.S_IFLNK | 0o777) << 16
+        with zipfile.ZipFile(source, 'a') as archive:
+            archive.writestr(link, 'somewhere')
+        destination = self.root / 'extract'
+        destination.mkdir()
+        with self.assertRaisesRegex(backup.android.FrameError, 'links'):
+            backup.unpack_bundle(source, destination)
+        self.assertEqual(list(destination.iterdir()), [])
+        source = self.bundle()
+        for limit, value, message in [('MAX_FILES', 1, 'too many'), ('MAX_BYTES', 1, 'size limit')]:
+            with patch.object(backup, limit, value):
+                with self.assertRaisesRegex(backup.android.FrameError, message):
+                    backup.unpack_bundle(source, destination)
+        with patch.object(backup.shutil, 'disk_usage', return_value=type('Disk', (), {'free': 0})()):
+            with self.assertRaisesRegex(backup.android.FrameError, 'staging space'):
+                backup.unpack_bundle(source, destination)
+        with self.assertRaisesRegex(server.Failure, 'one complete'):
+            server.android_backup({'action': 'inspect', 'paths': [str(source), str(self.apk)]})
+        source.write_bytes(b'not a zip')
+        with self.assertRaisesRegex(server.Failure, 'Could not read'):
+            server.android_backup({'action': 'inspect', 'paths': [str(source)]})
+        self.assertFalse(server._android_backups)
+
+    def test_manifest_split_and_required_split_are_refused(self):
+        from test_quest import axml
+        for attrs in ({'split': 'config.arm64'}, {'split_required': True},
+                      {'split_required': True, 'resmap': True}):
+            data = axml(PKG, **attrs)
+            if attrs.get('resmap'):
+                # Strip the attribute name, retaining the Android resource ID.
+                data = data.replace('isSplitRequired'.encode('utf-16-le'),
+                                    ('x' * len('isSplitRequired')).encode('utf-16-le'))
+            self.apk.write_bytes(apk({'AndroidManifest.xml': data}))
+            with self.subTest(attrs=attrs):
+                with self.assertRaisesRegex(backup.android.FrameError, 'needs split APKs'):
+                    backup.inspect([str(self.apk)])
+
+    def test_bundle_install_uses_existing_queue_and_cleans_after_failure(self):
+        source = self.bundle()
+        read = server.android_backup({'action': 'inspect', 'paths': [str(source)]})
+        entry = server._android_backups[read['token']]
+        folders = list(entry['dirs'])
+        def job(label, work, **kwargs):
+            return work(lambda *args: None)
+        with patch.object(server, 'ensure_master'), patch.object(server, 'start_job', side_effect=job), \
+                patch.object(backup, 'install', side_effect=backup.android.FrameError('fixture install failure')) as install:
+            with self.assertRaisesRegex(backup.android.FrameError, 'fixture install failure'):
+                server.android_backup({'action': 'install', 'token': read['token']})
+        install.assert_called_once_with(entry['plan'], 'auto', unittest.mock.ANY)
+        self.assertFalse(server._android_backups)
+        self.assertTrue(all(not Path(p).exists() for p in folders))
+        self.assertTrue(source.exists())
+
+    @unittest.skipUnless(shutil.which('node'), 'needs node')
+    def test_actual_send_handler_routes_bundle_to_importer_and_pc_zip_to_titles(self):
+        page = (Path(__file__).resolve().parents[1] / 'ui/index.html').read_text(encoding='utf-8')
+        function = page[page.index('async function sendFilesOne('):page.index('$("androidBackupChoose").onclick')]
+        script = r"""
+const calls = [];
+global.window = {connDevice:'fixture'};
+global.$ = () => ({});
+global.refresh = () => {};
+global.toast = msg => {throw new Error(msg)};
+global.TITLE_EXT = /\.(zip|exe)$/i;
+global.importAndroidFiles = async files => calls.push(['android', files.map(f => f.name)]);
+global.sideload = async file => calls.push(['title', file.name]);
+global.act = () => {throw new Error('unexpected copy')};
+(async () => {
+  for (const name of ['game.xapk', 'game.apks', 'game.apkm', 'pc.zip']) {
+    await sendFilesOne([{name, size:123}], new Set(), 'fixture');
+  }
+  await sendFilesOne([{name:'base.apk',size:123},{name:'split.apk',size:123}], new Set(), 'fixture');
+  process.stdout.write(JSON.stringify(calls));
+})().catch(e => {console.error(e); process.exitCode = 1});
+"""
+        result = subprocess.run(['node', '-e', function + script], capture_output=True, text=True, check=True)
+        self.assertEqual(json.loads(result.stdout), [
+            ['android', ['game.xapk']], ['android', ['game.apks']],
+            ['android', ['game.apkm']], ['title', 'pc.zip'],
+            ['android', ['base.apk', 'split.apk']]])
+
+
 if __name__ == '__main__':
     unittest.main()

tests/test_apk_artwork.py

@@ -17,6 +17,9 @@ PNG = (Path(__file__).parent / 'fixtures/apk-search/artwork/brush-icon.png').rea
 
 class ArtworkTests(unittest.TestCase):
     def setUp(self):
+        p = patch.object(search, 'compat_reports', None)
+        p.start()
+        self.addCleanup(p.stop)
         with _images._lock:
             _images._urls.clear()
             _images._tokens.clear()

tests/test_apk_compat_reports.py

@@ -0,0 +1,169 @@
+"""Search report snapshots: synthetic evidence only, no credentials or services."""
+import sandbox  # noqa: F401
+import sys
+import json
+import tempfile
+import threading
+import time
+import unittest
+from pathlib import Path
+from unittest.mock import Mock, patch
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / 'ui'))
+import frame_catalog
+import frame_compat_db as db
+from apk_sources import search
+from test_apk_search import SettingsTest, fake, ENTRIES
+
+
+class ReportTests(SettingsTest):
+    def hook(self, rows):
+        by = frame_catalog.reports.by_package(rows)
+        snapshot = {pkg: v for pkg, rs in by.items() if (v := frame_catalog.reports.verdict(rs))}
+        p = patch.object(search, 'compat_reports', lambda: snapshot)
+        p.start()
+        self.addCleanup(p.stop)
+
+    def test_search_and_details_share_catalogue_rules(self):
+        pkg = ENTRIES[0]['package']
+        self.hook([dict(package=pkg, date='2026-10-01', result='runs'),
+                   dict(package=pkg, date='2026-10-02', rating='broken', notes='Crashes <here>'),
+                   dict(package=pkg, date='2026-10-03', result='runs')])
+        mod = fake()
+        with patch.object(search, 'modules', return_value=([mod], [])):
+            offer = search.search(timeout=.01)['apps'][0]['offers'][0]
+            detail = search.details('one', ENTRIES[0]['id'])
+        self.assertEqual(detail['compat_report']['verdict'], 'no')
+        self.assertEqual(offer['compat_report'], detail['compat_report'])
+        self.assertEqual(detail['verdict']['tone'], 'warning')
+        self.assertIn('Reported not working', detail['verdict']['label'])
+
+    def test_warnings_never_change_installability_or_hard_blockers(self):
+        entry = dict(ENTRIES[0], min_sdk=23, abis=['arm64-v8a'])
+        for kind, tone in [('works', 'works'), ('issues', 'issues'), ('broken', 'warning')]:
+            self.hook([dict(package=entry['package'], date='2026-10-01', rating=kind)])
+            decorated = search.decorate(entry)
+            self.assertEqual(decorated['verdict']['tone'], tone)
+            self.assertTrue(decorated['fit']['installable'])
+            for blocker in [dict(min_sdk=31), dict(abis=['x86_64']),
+                            dict(requires_meta_services=True), dict(engine='VrApi')]:
+                blocked = search.decorate(dict(entry, **blocker))
+                self.assertEqual(blocked['verdict']['tone'], 'blocked')
+                self.assertIsNotNone(blocked['compat_report'])
+
+    def test_wrong_file_failures_do_not_warn_but_real_failures_do(self):
+        entry = dict(ENTRIES[0], min_sdk=23, abis=[])
+        for notes in ['no arm64-v8a build', 'needs Android API 32']:
+            self.hook([dict(package=entry['package'], date='2026-10-01', result='install_failed', notes=notes)])
+            self.assertIsNone(search.decorate(entry)['compat_report'])
+        self.hook([dict(package=entry['package'], date='2026-10-01', result='crashes')])
+        self.assertEqual(search.decorate(entry)['verdict']['tone'], 'warning')
+        self.hook([dict(package=entry['package'], date='2026-10-01', result='install_failed', notes='installer crashed')])
+        self.assertEqual(search.decorate(entry)['verdict']['tone'], 'warning')
+
+    def test_report_warning_does_not_prevent_install(self):
+        self.hook([dict(package=ENTRIES[0]['package'], date='2026-10-01', rating='broken')])
+        mod = fake()
+        with patch.object(search, 'modules', return_value=([mod], [])), \
+             patch.object(frame_catalog.frame_android, 'install', return_value={'package': ENTRIES[0]['package']}) as install:
+            result = search.install('one', ENTRIES[0]['id'])
+        self.assertEqual(result['package'], ENTRIES[0]['package'])
+        install.assert_called_once()
+
+    def test_stalled_loader_does_not_block_search_or_details(self):
+        entered, release, finished = threading.Event(), threading.Event(), threading.Event()
+        main = threading.get_ident()
+
+        def loader():
+            self.assertNotEqual(threading.get_ident(), main)
+            entered.set()
+            try:
+                if not release.wait(2):
+                    raise TimeoutError('test stalled')
+                return []
+            finally:
+                finished.set()
+
+        cache = search.ReportCache(loader, frame_catalog.reports.verdict)
+        from apk_sources import _web
+        with patch.object(search, 'compat_reports', cache.read), \
+             patch.object(search, 'modules', return_value=([fake()], [])), \
+             patch.object(_web, 'prune'), \
+             patch.object(db, 'key', side_effect=AssertionError('credentials on request')), \
+             patch.object(db._opener, 'open', side_effect=AssertionError('network on request')), \
+             patch.object(db.subprocess, 'run', side_effect=AssertionError('subprocess on request')):
+            try:
+                search.warm()  # production server startup, before the first request
+                self.assertTrue(entered.wait(1))
+                start = time.monotonic()
+                result = search.search(timeout=.01)
+                detail = search.details('one', ENTRIES[0]['id'])
+                self.assertLess(time.monotonic() - start, .2)
+                self.assertTrue(result['apps'])
+                self.assertIsNone(detail['compat_report'])
+            finally:
+                release.set()
+                self.assertTrue(finished.wait(1))
+
+
+class CacheTests(unittest.TestCase):
+    def wait_idle(self, cache):
+        deadline = time.monotonic() + 1
+        while time.monotonic() < deadline:
+            with cache._lock:
+                if not cache._running:
+                    return
+            time.sleep(.001)
+        self.fail('report worker did not finish')
+
+    def test_public_copy_reads_its_local_mirror_and_outbox(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            mirror, outbox = Path(tmp) / 'mirror.json', Path(tmp) / 'outbox.jsonl'
+            mirror.write_text(json.dumps({'reports': [dict(package='org.example.app', id='old',
+                              date='2026-10-01', result='runs')]}))
+            outbox.write_text(json.dumps(dict(package='org.example.app', id='new',
+                              date='2026-10-02', rating='broken')) + '\n')
+            with patch.object(db, 'MIRROR', str(mirror)), patch.object(db, 'OUTBOX', str(outbox)), \
+                 patch.object(db, '_mem', dict(at=0, reports=None, source=None)), \
+                 patch.object(db, 'shared', return_value=False), \
+                 patch.object(db, 'fetch_all', side_effect=AssertionError('private database read')):
+                cache = search.ReportCache(db.load, frame_catalog.reports.verdict)
+                cache.read()
+                self.wait_idle(cache)
+                self.assertEqual(cache.read()['org.example.app'][0], 'no')
+
+    def test_ttl_refresh_is_single_flight_and_keeps_last_good_snapshot(self):
+        loader = Mock(return_value=[dict(package='org.example.app', date='2026-10-01', rating='issues')])
+        cache = search.ReportCache(loader, frame_catalog.reports.verdict, ttl=60)
+        cache.read()
+        self.wait_idle(cache)
+        first = cache.read()
+        self.assertEqual(first['org.example.app'][0], 'maybe')
+        self.assertEqual(loader.call_count, 1)
+        entered, release = threading.Event(), threading.Event()
+
+        def stalled():
+            entered.set()
+            release.wait(2)
+            raise OSError('offline')
+
+        loader.side_effect = stalled
+        cache._at -= 61
+        try:
+            self.assertIs(cache.read(), first)
+            self.assertTrue(entered.wait(1))
+            for _ in range(10):
+                self.assertIs(cache.read(), first)
+            self.assertEqual(loader.call_count, 2)
+        finally:
+            release.set()
+            self.wait_idle(cache)
+        self.assertIs(cache.read(), first)
+        self.assertEqual(loader.call_count, 2)  # failure also has a retry TTL
+        loader.side_effect = None
+        loader.return_value = [dict(package='org.example.app', date='2026-10-02', rating='works')]
+        cache._at -= 61
+        cache.read()
+        self.wait_idle(cache)
+        self.assertEqual(cache.read()['org.example.app'][0], 'works')
+        self.assertEqual(first['org.example.app'][0], 'maybe')  # published snapshots never mutated

tests/test_apk_search.py

@@ -27,6 +27,9 @@ def fake(source_id='one', fn=None):
 
 class SettingsTest(unittest.TestCase):
     def setUp(self):
+        p = patch.object(search, 'compat_reports', None)
+        p.start()
+        self.addCleanup(p.stop)
         self.tmp = tempfile.TemporaryDirectory()
         self.addCleanup(self.tmp.cleanup)
         p = patch.object(search, 'settings_path', return_value=Path(self.tmp.name) / 'enabled.json')

tests/test_autosync.py

@@ -0,0 +1,291 @@
+"""Copying new screenshots and clips to the computer on their own (ui/frame_autosync.py).
+
+The headset is a fake: lists of shots and clips, and save/export functions that
+record what they were asked to copy. No SSH, no headset.
+"""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import errno
+import json
+import shutil
+import sys
+import tempfile
+import threading
+import unittest
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "ui"))
+import frame_autosync as fa  # noqa: E402
+
+NOW = 1_800_000_000.0
+GB = 1024**3
+
+
+def shot(n, t, saved=False):
+    return {"id": f"1/620/20261020{n:06d}_1.jpg", "time": t, "saved": saved}
+
+
+def clip(n, t, idle=600, kind="clip", saved=False):
+    return {"id": f"1/clips/clip_620_{n}/video/bg", "kind": kind, "time": t, "idle": idle, "saved": saved}
+
+
+class FakeFrame:
+    def __init__(self):
+        self.shots, self.clips = [], []
+        self.saved, self.exported, self.calls = [], [], []
+        self.device, self.busy, self.down = "frame-a", False, False
+        self.save_error = self.export_error = None
+
+    def list_shots(self):
+        self.calls.append("list_shots")
+        if self.down:
+            raise RuntimeError("ssh: connect to host frame port 22: Connection timed out")
+        return {"shots": list(self.shots)}
+
+    def list_clips(self):
+        self.calls.append("list_clips")
+        if self.down:
+            raise RuntimeError("ssh: connect to host frame port 22: Connection timed out")
+        return {"clips": list(self.clips)}
+
+    def save_shots(self, device, ids):
+        self.calls.append("save_shots")
+        if self.save_error:
+            raise self.save_error
+        self.saved.append((device, list(ids)))
+        for s in self.shots:
+            if s["id"] in ids:
+                s["saved"] = True
+
+    def export_clip(self, device, clip_id):
+        self.calls.append("export_clip")
+        if self.export_error:
+            raise self.export_error
+        self.exported.append((device, clip_id))
+        for c in self.clips:
+            if c["id"] == clip_id:
+                c["saved"] = True
+
+
+class AutoSyncTest(unittest.TestCase):
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, ignore_errors=True)
+        self.frame = FakeFrame()
+        self.now = [NOW]
+        self.free = [100 * GB]
+        self.sync = self.make()
+
+    def make(self):
+        f = self.frame
+        return fa.AutoSync(f.list_shots, f.save_shots, f.list_clips, f.export_clip,
+                           lambda: f.device, lambda: f.busy,
+                           offline=lambda e: "The Frame isn't answering." if "timed out" in str(e) else None,
+                           shots_folder=self.dir / "Pictures", clips_folder=self.dir / "Videos",
+                           path=self.dir / "auto-sync.json", clock=lambda: self.now[0],
+                           space=lambda folder: self.free[0])
+
+    def test_off_by_default_and_does_nothing(self):
+        self.frame.shots = [shot(1, NOW + 10)]
+        self.frame.clips = [clip(1, NOW + 10)]
+        s = self.sync.state()
+        self.assertFalse(s["screenshots"] or s["clips"])
+        self.assertEqual(self.sync.tick(), fa.INTERVAL)
+        self.assertEqual(self.frame.calls, [])  # not even a listing
+        self.assertFalse((self.dir / "auto-sync.json").exists())
+
+    def test_settings_persist(self):
+        self.sync.update({"screenshots": True})
+        again = self.make().state()
+        self.assertTrue(again["screenshots"])
+        self.assertFalse(again["clips"])
+        self.assertEqual(again["since"], NOW)
+        saved = json.loads((self.dir / "auto-sync.json").read_text())
+        self.assertEqual((saved["screenshots"], saved["clips"]), (True, False))
+
+    def test_only_what_is_newer_than_turning_it_on(self):
+        self.frame.shots = [shot(1, NOW - 3600), shot(2, NOW + 5), shot(3, NOW + 50, saved=True)]
+        self.frame.clips = [clip(1, NOW - 3600), clip(2, NOW + 5)]
+        self.sync.update({"screenshots": True, "clips": True})
+        self.assertEqual(self.sync.tick(), fa.INTERVAL)
+        self.assertEqual(self.frame.saved, [("frame-a", [shot(2, 0)["id"]])])
+        self.assertEqual(self.frame.exported, [("frame-a", clip(2, 0)["id"])])
+        s = self.sync.state()
+        self.assertEqual((s["copied"], s["copied_time"], s["checked"], s["error"]), (2, NOW, NOW, None))
+
+    def test_watermark_moves_when_turned_off_and_on_again(self):
+        self.sync.update({"screenshots": True})
+        self.now[0] += 1000
+        self.sync.update({"clips": True})  # already on: the watermark stays
+        self.assertEqual(self.sync.state()["since"], NOW)
+        self.sync.update({"screenshots": False, "clips": False})
+        self.sync.update({"screenshots": True})
+        self.assertEqual(self.sync.state()["since"], NOW + 1000)
+
+    def test_copy_everything_now_once(self):
+        self.frame.shots = [shot(1, NOW - 3600), shot(2, NOW - 60)]
+        self.frame.clips = [clip(1, NOW - 3600), clip(2, NOW - 60, kind="background")]
+        self.sync.copy_all()  # works with the toggles off too
+        self.assertTrue(self.sync.state()["pending"])
+        self.sync.tick()
+        self.assertEqual(self.frame.saved, [("frame-a", [shot(1, 0)["id"], shot(2, 0)["id"]])])
+        self.assertEqual(self.frame.exported, [("frame-a", clip(1, 0)["id"])])  # never the background recording
+        self.assertFalse(self.sync.state()["pending"])
+        self.frame.calls.clear()
+        self.sync.tick()
+        self.assertEqual(self.frame.calls, [])  # off again afterwards
+
+    def test_not_copied_again_after_deleting_it_here(self):
+        self.sync.update({"screenshots": True, "clips": True})
+        self.frame.shots = [shot(1, NOW + 5)]
+        self.frame.clips = [clip(1, NOW + 5)]
+        self.sync.tick()
+        for s in self.frame.shots + self.frame.clips:
+            s["saved"] = False  # the person deleted the files
+        self.frame.saved.clear()
+        self.frame.exported.clear()
+        self.make().tick()  # remembered across restarts too
+        self.assertEqual((self.frame.saved, self.frame.exported), ([], []))
+
+    def test_saved_by_hand_counts_as_copied(self):
+        self.sync.update({"screenshots": True})
+        self.frame.shots = [shot(1, NOW + 5, saved=True)]
+        self.sync.tick()
+        self.frame.shots[0]["saved"] = False
+        self.sync.tick()
+        self.assertEqual(self.frame.saved, [])
+
+    def test_remembered_per_headset(self):
+        self.sync.update({"screenshots": True})
+        self.frame.shots = [shot(1, NOW + 5)]
+        self.sync.tick()
+        self.frame.device = "frame-b"
+        self.frame.shots = [shot(1, NOW + 5)]  # the same name on another headset
+        self.sync.tick()
+        self.assertEqual([d for d, _ in self.frame.saved], ["frame-a", "frame-b"])
+
+    def test_clip_still_being_recorded_waits(self):
+        self.sync.update({"clips": True})
+        self.frame.clips = [clip(1, NOW + 5, idle=4), clip(2, NOW + 6, idle=None)]
+        self.sync.tick()
+        self.assertEqual(self.frame.exported, [])
+        self.assertEqual(self.sync.state()["waiting"], 2)
+        self.frame.clips[0]["idle"] = fa.SETTLE + 1
+        self.sync.tick()
+        self.assertEqual(self.frame.exported, [("frame-a", clip(1, 0)["id"])])
+        self.assertEqual(self.sync.state()["waiting"], 1)
+
+    def test_no_headset_no_work(self):
+        self.sync.update({"screenshots": True, "clips": True})
+        self.frame.device = None
+        self.assertEqual(self.sync.tick(), fa.INTERVAL)
+        self.assertEqual(self.frame.calls, [])
+
+    def test_waits_for_other_work(self):
+        self.sync.update({"screenshots": True, "clips": True})
+        self.frame.shots = [shot(1, NOW + 5)]
+        self.frame.busy = True
+        self.assertEqual(self.sync.tick(), fa.BUSY_WAIT)
+        self.assertEqual(self.frame.calls, [])
+        self.frame.busy = False
+        self.sync.tick()
+        self.assertEqual(len(self.frame.saved), 1)
+
+    def test_stops_between_items_when_other_work_starts(self):
+        self.sync.update({"clips": True})
+        self.frame.clips = [clip(1, NOW + 5), clip(2, NOW + 6)]
+        export = self.frame.export_clip
+
+        def then_busy(device, clip_id):
+            export(device, clip_id)
+            self.frame.busy = True  # an install started meanwhile
+        self.frame.export_clip = then_busy
+        sync = self.make()
+        self.assertEqual(sync.tick(), fa.BUSY_WAIT)
+        self.assertEqual(len(self.frame.exported), 1)
+
+    def test_backs_off_while_unreachable(self):
+        self.sync.update({"screenshots": True})
+        self.frame.down = True
+        waits = [self.sync.tick() for _ in range(6)]
+        self.assertEqual(waits[:4], [120, 240, 480, 900])
+        self.assertEqual(waits[-1], fa.MAX_BACKOFF)
+        self.assertEqual(self.sync.state()["error"], "The Frame isn't answering.")
+        self.frame.down = False
+        self.assertEqual(self.sync.tick(), fa.INTERVAL)
+        self.assertIsNone(self.sync.state()["error"])
+        self.frame.down = True
+        self.assertEqual(self.sync.tick(), 120)  # starts over after a good look
+
+    def test_pauses_when_this_computer_is_nearly_full(self):
+        self.sync.update({"screenshots": True})
+        self.frame.shots = [shot(1, NOW + 5)]
+        self.free[0] = 10 * 1024**2
+        self.sync.tick()
+        s = self.sync.state()
+        self.assertIn("out of space", s["paused"])
+        self.assertEqual(self.frame.saved, [])
+        self.free[0] = 100 * GB
+        self.frame.calls.clear()
+        self.sync.tick()
+        self.assertEqual(self.frame.calls, [])  # stays paused, also after a restart
+        self.assertTrue(self.make().state()["paused"])
+        self.sync.resume()
+        self.sync.tick()
+        self.assertEqual(len(self.frame.saved), 1)
+        self.assertIsNone(self.sync.state()["paused"])
+
+    def test_pauses_when_a_copy_runs_out_of_space(self):
+        self.sync.update({"screenshots": True, "clips": True})
+        self.frame.clips = [clip(1, NOW + 5)]
+        self.frame.export_error = RuntimeError("Not enough free space on this computer: it needs 900 MB")
+        self.sync.tick()
+        self.assertIn("ran out of space", self.sync.state()["paused"])
+        self.sync.resume()
+        self.frame.export_error = None
+        self.frame.shots = [shot(1, NOW + 5)]
+        self.frame.save_error = OSError(errno.ENOSPC, "No space left on device")
+        self.sync.tick()
+        self.assertTrue(self.sync.state()["paused"])
+
+    def test_space_on_the_frame_is_not_a_pause(self):
+        self.sync.update({"clips": True})
+        self.frame.clips = [clip(1, NOW + 5)]
+        self.frame.export_error = RuntimeError("Not enough free space on the Frame to export it: it needs 900 MB")
+        self.sync.tick()
+        s = self.sync.state()
+        self.assertIsNone(s["paused"])
+        self.assertIn("Not enough free space on the Frame", s["error"])
+
+    def test_an_item_that_keeps_failing_is_left_alone(self):
+        self.sync.update({"clips": True})
+        self.frame.clips = [clip(1, NOW + 5)]
+        self.frame.export_error = RuntimeError("ffmpeg couldn't join the recording")
+        for _ in range(fa.TRIES + 2):
+            self.sync.tick()
+        self.assertEqual(self.frame.calls.count("export_clip"), fa.TRIES)
+
+    def test_worker_stops(self):
+        stop = threading.Event()
+        t = threading.Thread(target=self.sync.run, args=(stop,), daemon=True)
+        t.start()
+        stop.set()
+        self.sync.update({})  # wakes it
+        t.join(5)
+        self.assertFalse(t.is_alive())
+
+
+class Server(unittest.TestCase):
+    def test_route_and_settings(self):
+        import server
+        self.assertIn("/api/autosync", server.POST)
+        with self.assertRaises(server.Failure):
+            server.auto_sync({"action": "explode"})
+        state = server.auto_sync({"action": "settings", "screenshots": "yes"})  # not a bool: ignored
+        self.assertFalse(state["screenshots"])
+        if server.LINK is None:
+            with self.assertRaises(server.Failure):
+                server.auto_sync({"action": "now"})  # nothing connected
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_backup.py

@@ -0,0 +1,536 @@
+"""Backup and recovery kit (ui/frame_backup.py, ui/frame_backup_remote.py) against a folder laid
+out like the Frame's home. The headset-side script runs for real, locally; only SSH is faked."""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import io
+import json
+import os
+from pathlib import Path
+import re
+import shlex
+import subprocess
+import sys
+import tarfile
+import tempfile
+import unittest
+from unittest.mock import patch
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / 'ui'))
+import frame_android as android  # noqa: E402
+import frame_backup as backup  # noqa: E402
+import frame_backup_remote as remote  # noqa: E402
+import server  # noqa: E402
+
+STEAM = '.local/share/Steam'
+USER = STEAM + '/steamapps/compatdata/%s/pfx/drive_c/users/steamuser'
+SECRETS = ['.steam/steam.token', STEAM + '/config/config.vdf', STEAM + '/config/loginusers.vdf',
+           STEAM + '/ssfn123456', '.ssh/id_ed25519', '.ssh/authorized_keys',
+           USER % 1234 + '/AppData/Roaming/Launcher/session.token',
+           USER % 1234 + '/AppData/Roaming/Launcher/.ssh/id_rsa',
+           '.config/cliproxyapi/secrets.env', '.local/share/keyrings/login.keyring']
+
+
+def write(home, rel, data=b'x'):
+    path = Path(home) / rel
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_bytes(data if isinstance(data, bytes) else data.encode())
+    return path
+
+
+def manifest(home, appid, name):
+    write(home, '%s/steamapps/appmanifest_%s.acf' % (STEAM, appid),
+          '"AppState"\n{\n\t"appid"\t\t"%s"\n\t"name"\t\t"%s"\n}\n' % (appid, name))
+
+
+def frame_home(home):
+    """A Frame before a reset: one Proton game, a Linux game, settings and secrets."""
+    manifest(home, 1234, 'Test Game')
+    write(home, USER % 1234 + '/AppData/Roaming/Studio/Game/save1.dat', b'save one')
+    write(home, USER % 1234 + '/Documents/My Games/Game/profile.sav', b'profile')
+    write(home, USER % 1234 + '/AppData/Local/Temp/junk.tmp', b'junk')
+    write(home, USER % 1234 + '/AppData/Local/Microsoft/Windows/x.db', b'wine')
+    write(home, USER % 999 + '/AppData/Local/Temp/only-cache', b'c')        # no saves: no part
+    write(home, STEAM + '/steamapps/compatdata/2800000001/internal/org.example/x', b'android')
+    write(home, STEAM + '/userdata/555/config/localconfig.vdf', b'local')
+    write(home, STEAM + '/userdata/555/config/shortcuts.vdf', b'shortcuts')
+    write(home, STEAM + '/userdata/555/241100/remote/controller_config/1234/layout.vdf', b'layout')
+    write(home, STEAM + '/userdata/555/1234/remote/cloud.sav', b'cloud')    # Steam Cloud's own
+    write(home, STEAM + '/userdata/555/760/remote/1234/screenshots/a.jpg', b'shot')
+    write(home, '.config/kdeglobals', b'[General]')
+    write(home, '.config/openvr/config/steamvr.vrsettings', b'{}')
+    write(home, '.config/unity3d/Company/LinuxGame/prefs', b'prefs')
+    write(home, '.bashrc', b'# mine')
+    for rel in SECRETS:
+        write(home, rel, b'SECRET')
+
+
+class Remote(unittest.TestCase):
+    def setUp(self):
+        self.tmp = tempfile.TemporaryDirectory()
+        self.home = Path(self.tmp.name)
+        patcher = patch.object(remote, 'HOME', self.home)
+        patcher.start()
+        self.addCleanup(patcher.stop)
+        self.addCleanup(self.tmp.cleanup)
+
+    def files(self, part):
+        return [rel for rel, _ in remote.part_files(part)[0]]
+
+    def test_plan_picks_saves_and_settings_and_never_secrets(self):
+        frame_home(self.home)
+        plan = remote.plan()
+        ids = [p['id'] for p in plan['parts']]
+        self.assertEqual(ids, ['saves:1234', 'saves:linux', 'settings:steam', 'settings:system'])
+        self.assertEqual(plan['parts'][0]['label'], 'Test Game saves')
+        saves = self.files('saves:1234')
+        self.assertEqual(sorted(saves), [USER % 1234 + '/AppData/Roaming/Studio/Game/save1.dat',
+                                         USER % 1234 + '/Documents/My Games/Game/profile.sav'])
+        steam = self.files('settings:steam')
+        self.assertIn(STEAM + '/userdata/555/241100/remote/controller_config/1234/layout.vdf', steam)
+        self.assertIn(STEAM + '/userdata/555/config/localconfig.vdf', steam)
+        self.assertFalse([f for f in steam if '/1234/remote/' in f or '/760/' in f])
+        everything = sum((self.files(i) for i in ids), [])
+        for rel in SECRETS + ['.bashrc']:
+            self.assertNotIn(rel, everything)
+        self.assertFalse([f for f in everything if remote.is_secret(f)])
+        self.assertTrue(any('steam.token' in x for x in plan['excluded']))
+        # The controller layout goes back; localconfig.vdf and shortcuts.vdf are for reference.
+        steam_part = plan['parts'][2]
+        self.assertEqual((steam_part['files'], steam_part['restorable']), (3, 1))
+
+    def test_secret_names(self):
+        for rel in SECRETS + ['a/b/ID_RSA.pub', 'x/kwalletd/k', 'x/cert.PEM']:
+            self.assertTrue(remote.is_secret(rel), rel)
+        for rel in ['saves/game.sav', 'Documents/tokens-collected.txt', 'config/localconfig.vdf']:
+            self.assertFalse(remote.is_secret(rel), rel)
+
+    @unittest.skipIf(os.name == 'nt', 'symlinks need privileges on Windows')
+    def test_links_are_never_followed(self):
+        frame_home(self.home)
+        outside = write(self.home, 'elsewhere/private.txt', b'p')
+        base = self.home / (USER % 1234) / 'Documents'
+        os.symlink(str(outside.parent), str(base / 'linked-dir'))
+        os.symlink(str(outside), str(base / 'linked-file'))
+        self.assertFalse([f for f in self.files('saves:1234') if 'linked' in f])
+
+    def test_big_files_are_listed_as_skipped(self):
+        frame_home(self.home)
+        with patch.object(remote, 'MAX_FILE', 3):
+            files, skipped = remote.part_files('saves:1234')
+        self.assertEqual(files, [])
+        self.assertEqual({s['reason'] for s in skipped}, {'over 2 GiB'})
+
+    def test_pack_holds_exactly_the_planned_files(self):
+        frame_home(self.home)
+        out = io.BytesIO()
+        remote.pack('saves:1234', out)
+        out.seek(0)
+        with tarfile.open(fileobj=out, mode='r:gz') as archive:
+            names = sorted(m.name for m in archive)
+        self.assertEqual(names, sorted(self.files('saves:1234')))
+        with self.assertRaises(ValueError):
+            remote.pack('saves:../../etc', io.BytesIO())
+
+    def archive(self, members):
+        out = io.BytesIO()
+        with tarfile.open(fileobj=out, mode='w:gz') as tar:
+            for name, data in members:
+                info = tarfile.TarInfo(name)
+                info.size = len(data)
+                tar.addfile(info, io.BytesIO(data))
+        out.seek(0)
+        return out
+
+    def test_check_after_a_reset(self):
+        save = USER % 1234 + '/AppData/Roaming/Studio/Game/save1.dat'
+        ask = {'parts': [{'id': 'saves:1234', 'files': [save]},
+                         {'id': 'settings:steam', 'files': [STEAM + '/userdata/555/241100/remote/controller_config/1/a.vdf']},
+                         {'id': 'settings:system', 'files': ['.config/openvr/config/steamvr.vrsettings']},
+                         {'id': 'saves:../x', 'files': []}]}
+        states = lambda: [p['status'] for p in remote.check(ask)['parts']]  # noqa: E731
+        self.assertEqual(states(), ['not_installed', 'no_account', 'reference', 'unknown'])
+        manifest(self.home, 1234, 'Test Game')
+        (self.home / STEAM / 'userdata/555').mkdir(parents=True)
+        self.assertEqual(states()[:2], ['no_prefix', 'ok'])
+        (self.home / (USER % 1234)).mkdir(parents=True)
+        result = remote.check(ask)['parts'][0]
+        self.assertEqual((result['status'], result['new'], result['replace']), ('ok', 1, 0))
+        write(self.home, save, b'newer')
+        self.assertEqual(remote.check(ask)['parts'][0]['replace'], 1)
+
+    def test_restore_replaces_only_its_files_and_keeps_the_old_ones(self):
+        manifest(self.home, 1234, 'Test Game')
+        save = USER % 1234 + '/AppData/Roaming/Studio/Game/save1.dat'
+        write(self.home, save, b'played since')
+        other = write(self.home, USER % 1234 + '/AppData/Roaming/Studio/Game/other.dat', b'untouched')
+        bashrc = write(self.home, '.bashrc', b'# mine')
+        source = self.archive([(save, b'from backup'), (USER % 1234 + '/Documents/new.sav', b'new'),
+                               ('.bashrc', b'# replaced?')])
+        result = remote.restore('saves:1234', '20261023-120000', source)
+        self.assertEqual((result['written'], result['replaced']), (2, 1))
+        self.assertEqual(result['held'], {'reference': 1})
+        self.assertEqual((self.home / save).read_bytes(), b'from backup')
+        self.assertEqual(other.read_bytes(), b'untouched')
+        self.assertEqual(bashrc.read_bytes(), b'# mine')
+        kept = self.home / remote.PREVIOUS / '20261023-120000' / save
+        self.assertEqual(kept.read_bytes(), b'played since')
+        self.assertFalse([p for p in (self.home / save).parent.iterdir() if p.name.endswith('.part')])
+
+    def test_unsafe_archives_write_nothing(self):
+        manifest(self.home, 1234, 'Test Game')
+        (self.home / (USER % 1234)).mkdir(parents=True)
+        good = (USER % 1234 + '/Documents/a.sav', b'a')
+        for bad in ('../escape', '/etc/passwd', USER % 1234 + '/Documents/../../../../../../x',
+                    USER % 1234 + '/Documents/a.sav'):
+            with self.assertRaises(ValueError, msg=bad):
+                remote.restore('saves:1234', '20261023-120000', self.archive([good, (bad, b'evil')]))
+            self.assertFalse((self.home / good[0]).exists(), bad)
+        link = io.BytesIO()
+        with tarfile.open(fileobj=link, mode='w:gz') as tar:
+            info = tarfile.TarInfo(USER % 1234 + '/Documents/l')
+            info.type, info.linkname = tarfile.SYMTYPE, '/etc/passwd'
+            tar.addfile(info)
+        link.seek(0)
+        with self.assertRaises(ValueError):
+            remote.restore('saves:1234', '20261023-120000', link)
+        with self.assertRaises(ValueError):
+            remote.restore('saves:1234', '../stamp', self.archive([good]))
+
+    def test_restore_refuses_secrets_and_other_games(self):
+        manifest(self.home, 1234, 'Test Game')
+        (self.home / (USER % 1234)).mkdir(parents=True)
+        result = remote.restore('saves:1234', '20261023-120000', self.archive([
+            (USER % 1234 + '/AppData/Roaming/L/auth.token', b't'), (USER % 5678 + '/Documents/x.sav', b'x')]))
+        self.assertEqual(result['written'], 0)
+        self.assertEqual(result['held'], {'refused': 1, 'reference': 1})
+
+
+class Session(unittest.TestCase):
+    def state(self, targets, running=(), configured=None):
+        with tempfile.TemporaryDirectory() as folder:
+            conf = write(folder, 'sddm.conf', 'Session=%s\n' % (configured or 'gamescope.desktop'))
+            with patch.object(remote, 'SDDM_CONFS', (str(conf),)), \
+                    patch.object(remote, '_session_target', side_effect=targets), \
+                    patch.object(remote, '_running', side_effect=lambda n, full=False: n in running), \
+                    patch.object(remote.shutil, 'which', return_value='/usr/bin/steamosctl'):
+                return remote.session()
+
+    def test_full_plasma_with_vr_gamescope_is_desktop(self):
+        # Issue #142, SteamOS 0.5.6: steamvr-plasma also starts nested scripts.
+        state = self.state(['inactive', 'active'],
+                           {'gamescope-wl', 'plasmashell', 'steamos-nested-desktop'},
+                           configured='gamescope.desktop')
+        self.assertEqual(state['mode'], 'desktop')
+        self.assertTrue(state['gamescope'])
+        self.assertTrue(state['nested_desktop'])
+        self.assertEqual(state['selector'], 'steamosctl')
+        self.assertEqual(state['session_targets']['plasma-workspace-wayland.target'], 'active')
+        with patch.object(backup, 'session_status', return_value=state), patch.object(backup, '_ssh') as ssh:
+            self.assertTrue(backup.return_to_game_mode(confirmed=True)['switched'])
+            ssh.assert_called_once_with('steamosctl switch-to-game-mode', timeout=60)
+
+    def test_game_target_wins_with_or_without_nested_desktop(self):
+        for running in ((), {'gamescope-wl'}, {'gamescope', 'plasmashell', 'steamos-nested-desktop'}):
+            state = self.state(['active', 'inactive'], running, configured='plasma.desktop')
+            self.assertEqual(state['mode'], 'game')
+            with patch.object(backup, 'session_status', return_value=state), patch.object(backup, '_ssh') as ssh:
+                self.assertFalse(backup.return_to_game_mode(confirmed=True)['switched'])
+                ssh.assert_not_called()
+
+    def test_conflicting_incomplete_and_transitional_targets_block_return(self):
+        for targets in (['active', 'active'], ['inactive', 'inactive'], ['active', 'unknown'],
+                        ['not-found', 'active'], ['unknown', 'unknown'], ['inactive', 'activating'],
+                        ['deactivating', 'active'], ['failed', 'active']):
+            with self.subTest(targets=targets):
+                state = self.state(targets, {'gamescope', 'plasmashell'}, 'plasma.desktop')
+                self.assertEqual(state['mode'], 'unknown')
+                with patch.object(backup, 'session_status', return_value=state), patch.object(backup, '_ssh') as ssh:
+                    with self.assertRaisesRegex(backup.BackupError, 'nothing was changed'):
+                        backup.return_to_game_mode(confirmed=True)
+                    ssh.assert_not_called()
+
+    def test_older_builds_use_only_unambiguous_running_processes(self):
+        cases = [((), 'unknown'), ({'plasmashell'}, 'desktop'),
+                 ({'gamescope'}, 'game'), ({'gamescope-wl'}, 'game'),
+                 ({'start-gamescope-session'}, 'game'),
+                 ({'gamescope', 'plasmashell'}, 'unknown'),
+                 ({'gamescope', 'steamos-nested-desktop'}, 'unknown')]
+        for running, expected in cases:
+            with self.subTest(running=running):
+                state = self.state(['not-found', 'not-found'], running, 'plasma.desktop')
+                self.assertEqual(state['mode'], expected)
+                self.assertEqual(state['mode_source'], 'legacy-processes')
+
+    def test_target_probe_parses_systemd_and_uses_main_user_bus(self):
+        cases = [('LoadState=loaded\nActiveState=active\n', 0, 'active'),
+                 ('ActiveState=inactive\nLoadState=loaded\n', 0, 'inactive'),
+                 ('LoadState=not-found\nActiveState=inactive\n', 0, 'not-found'),
+                 ('LoadState=error\nActiveState=active\n', 0, 'unknown'),
+                 ('garbage', 0, 'unknown'), ('LoadState=loaded\nActiveState=active', 1, 'unknown')]
+        for stdout, code, expected in cases:
+            with self.subTest(stdout=stdout, code=code), \
+                    patch.object(remote.os, 'getuid', return_value=1000, create=True), \
+                    patch.object(remote.subprocess, 'run', return_value=subprocess.CompletedProcess([], code, stdout)) as run:
+                self.assertEqual(remote._session_target('gamescope-session.target'), expected)
+                self.assertEqual(run.call_args.args[0], ['systemctl', '--user', 'show',
+                                 'gamescope-session.target', '--property=LoadState', '--property=ActiveState'])
+                self.assertEqual(run.call_args.kwargs['timeout'], 5)
+                self.assertEqual(run.call_args.kwargs['env']['DBUS_SESSION_BUS_ADDRESS'], 'unix:path=/run/user/1000/bus')
+                self.assertEqual(run.call_args.kwargs['env']['XDG_RUNTIME_DIR'], '/run/user/1000')
+        for error in (OSError('no systemctl'), subprocess.TimeoutExpired('systemctl', 5)):
+            with patch.object(remote.os, 'getuid', return_value=1000, create=True), \
+                    patch.object(remote.subprocess, 'run', side_effect=error):
+                self.assertEqual(remote._session_target('gamescope-session.target'), 'unknown')
+
+    def test_selector_preference_and_older_builds(self):
+        for available, expected in [({'steamosctl', 'steamos-session-select'}, 'steamosctl'),
+                                    ({'holo-session-select', 'steamos-session-select'}, 'holo-session-select'),
+                                    ({'steamos-session-select'}, 'steamos-session-select'), (set(), None)]:
+            with patch.object(remote, 'SDDM_CONFS', ()), \
+                    patch.object(remote, '_session_target', return_value='unknown'), \
+                    patch.object(remote, '_running', return_value=False), \
+                    patch.object(remote.shutil, 'which', side_effect=lambda n: '/usr/bin/' + n if n in available else None):
+                self.assertEqual(remote.session()['selector'], expected)
+
+    def test_script_probe_does_not_match_names_in_transmitted_python_source(self):
+        with patch.object(remote.subprocess, 'call', return_value=1) as call:
+            self.assertFalse(remote._running('steamos-nested-desktop', full=True))
+            pattern = call.call_args.args[0][-1]
+        for command in ('/usr/bin/steamos-nested-desktop',
+                        '/bin/sh /usr/bin/steamos-nested-desktop',
+                        'bash steamos-nested-desktop --flag'):
+            self.assertIsNotNone(re.search(pattern, command), command)
+        for command in ('python3 -c ' + backup.REMOTE.read_text(),
+                        '/bin/sh -c pgrep -f steamos-nested-desktop',
+                        '/usr/bin/steamos-nested-desktop-other'):
+            self.assertIsNone(re.search(pattern, command), command)
+
+
+def fake_ssh(home, os_release):
+    """Runs the headset-side command locally, as the Frame's python3 would."""
+    def run(command, src=None, dst=None, timeout=None):
+        argv = shlex.split(command)
+        assert argv[:2] == ['python3', '-c'], argv
+        data = src if isinstance(src, bytes) else src.read() if src is not None else b''
+        env = dict(os.environ, FRAME_BACKUP_HOME=str(home), FRAME_BACKUP_OS_RELEASE=str(os_release))
+        r = subprocess.run([sys.executable, *argv[1:]], input=data, capture_output=True, env=env)
+        if r.returncode:
+            raise backup.BackupError(r.stderr.decode(errors='replace'))
+        if dst is not None:
+            dst.write(r.stdout)
+            return None
+        return r.stdout
+    return run
+
+
+class Local(unittest.TestCase):
+    def setUp(self):
+        self.tmp = tempfile.TemporaryDirectory()
+        self.addCleanup(self.tmp.cleanup)
+        base = Path(self.tmp.name)
+        self.home, self.store = base / 'frame', base / 'backups'
+        self.release = write(base, 'os-release', 'ID=steamos\nVERSION_ID=0.4.1\nBUILD_ID=20260925.6191901\n')
+        frame_home(self.home)
+        for p in (patch.dict(os.environ, FRAME_BACKUP_DIR=str(self.store)),
+                  patch.object(backup, '_ssh', side_effect=fake_ssh(self.home, self.release))):
+            p.start()
+            self.addCleanup(p.stop)
+
+    def android_backup(self, package, destination):
+        write(Path(destination).parent, Path(destination).name, b'android archive ' + package.encode())
+        return {'package': package, 'instance': android.instance_id(package), 'files': 3, 'bytes': 42,
+                'path': str(destination), 'sha256': backup._sha256(destination)}
+
+    def make(self):
+        apps = [{'package': 'org.example.open', 'label': 'Open app', 'running': True},
+                {'package': 'org.example.game', 'label': 'Game', 'running': False}]
+        with patch.object(android, 'list_apps', return_value=apps), \
+                patch.object(android, 'backup_data', side_effect=self.android_backup) as data, \
+                patch.object(backup.time, 'strftime', side_effect=lambda f: '2026-10-23-120000' if f == '%Y-%m-%d-%H%M%S'
+                             else '2026-10-23T12:00:00+0100'):
+            result = backup.backup(headset='My Frame')
+        data.assert_called_once()
+        return result
+
+    def test_backup_writes_a_manifest_with_checksums(self):
+        result = self.make()
+        folder = backup.backup_path('2026-10-23-120000')  # resolved: macOS's temp folder is a link
+        self.assertEqual(result['path'], str(folder))
+        self.assertEqual(sorted(p.name for p in self.store.iterdir()), ['2026-10-23-120000'])  # no .partial left
+        m = json.loads((folder / 'manifest.json').read_text())
+        self.assertEqual(m['headset'], {'name': 'My Frame', 'build': '20260925.6191901', 'version': '0.4.1'})
+        self.assertEqual([p['id'] for p in m['parts']],
+                         ['saves:1234', 'saves:linux', 'settings:steam', 'settings:system', 'android:org.example.game'])
+        for part in m['parts']:
+            self.assertEqual(backup._sha256(folder / part['archive']), part['sha256'])
+        saves = m['parts'][0]
+        self.assertEqual(saves['archive'], 'saves/saves-1234.tar.gz')
+        self.assertEqual(sum(f['bytes'] for f in saves['files']), saves['bytes'])
+        self.assertEqual(saves['files'][0]['sha256'], __import__('hashlib').sha256(b'save one').hexdigest())
+        self.assertEqual([s['id'] for s in m['skipped']], ['android:org.example.open'])
+        for part in m['parts'][:-1]:
+            with tarfile.open(str(folder / part['archive'])) as tar:
+                for member in tar:
+                    self.assertFalse(remote.is_secret(member.name), member.name)
+                    self.assertNotEqual(tar.extractfile(member).read(), b'SECRET', member.name)
+
+    def test_a_failed_backup_leaves_nothing_behind(self):
+        with patch.object(backup, 'inspect_archive', side_effect=backup.BackupError('cut off')), \
+                patch.object(android, 'list_apps', return_value=[]):
+            with self.assertRaises(backup.BackupError):
+                backup.backup(kinds=['saves'])
+        self.assertEqual(list(self.store.iterdir()), [])
+
+    def test_backup_names_cannot_leave_the_folder(self):
+        for name in ('../2026-10-23-120000', '2026-10-23-120000/..', '..', '/etc', 'C:\\x', '',
+                     '2026-10-23-120000/../../x', '2026-10-23-12000', None, 5):
+            with self.assertRaises(backup.BackupError, msg=repr(name)):
+                backup.backup_path(name)
+        self.assertEqual(backup.backup_path('2026-10-23-120000'), (self.store / '2026-10-23-120000').resolve())
+
+    def test_manifest_entries_cannot_point_outside_the_backup(self):
+        self.make()
+        path = self.store / '2026-10-23-120000' / 'manifest.json'
+        m = json.loads(path.read_text())
+        for archive in ('../../secret.tar.gz', '/etc/passwd', 'saves/saves-5678.tar.gz'):
+            m['parts'][0]['archive'] = archive
+            path.write_text(json.dumps(m))
+            with self.assertRaises(backup.BackupError, msg=archive):
+                backup.read_manifest('2026-10-23-120000')
+
+    def reset(self):
+        """A factory reset: the home folder is empty again."""
+        import shutil
+        shutil.rmtree(str(self.home))
+        self.home.mkdir()
+
+    def test_restore_after_a_reset_skips_what_is_not_back_yet(self):
+        self.make()
+        self.reset()
+        manifest(self.home, 1234, 'Test Game')
+        (self.home / (USER % 1234)).mkdir(parents=True)  # started once
+        with patch.object(android, 'list_apps', return_value=[]):
+            plan = {p['id']: p for p in backup.restore_plan('2026-10-23-120000')['parts']}
+            self.assertEqual(plan['saves:1234']['status'], 'ok')
+            self.assertEqual(plan['settings:steam']['status'], 'no_account')
+            self.assertEqual(plan['android:org.example.game']['status'], 'not_installed')
+            with self.assertRaises(backup.BackupError):
+                backup.restore('2026-10-23-120000', ['saves:1234'])  # not confirmed
+            self.assertFalse((self.home / (USER % 1234) / 'AppData').exists())
+            result = backup.restore('2026-10-23-120000', ['saves:1234', 'settings:steam', 'android:org.example.game'],
+                                    confirmed=True)
+        self.assertEqual([r['id'] for r in result['restored']], ['saves:1234'])
+        self.assertEqual({s['id'] for s in result['skipped']}, {'settings:steam', 'android:org.example.game'})
+        self.assertEqual((self.home / (USER % 1234) / 'AppData/Roaming/Studio/Game/save1.dat').read_bytes(), b'save one')
+
+    def test_android_data_goes_back_through_the_existing_helper(self):
+        self.make()
+        apps = [{'package': 'org.example.game', 'label': 'Game', 'running': False}]
+        with patch.object(android, 'list_apps', return_value=apps), \
+                patch.object(android, 'restore_data', return_value={'restored': True}) as restore:
+            result = backup.restore('2026-10-23-120000', ['android:org.example.game'], confirmed=True)
+        restore.assert_called_once_with('org.example.game', str(backup.backup_path('2026-10-23-120000') /
+                                                                 'android' / 'org.example.game.tar.gz'))
+        self.assertEqual(len(result['restored']), 1)
+        apps[0]['running'] = True
+        with patch.object(android, 'list_apps', return_value=apps), patch.object(android, 'restore_data') as restore:
+            result = backup.restore('2026-10-23-120000', ['android:org.example.game'], confirmed=True)
+        restore.assert_not_called()
+        self.assertEqual(result['skipped'][0]['reason'], 'Close the app first')
+
+    def test_a_damaged_archive_is_skipped(self):
+        self.make()
+        with open(str(self.store / '2026-10-23-120000/saves/saves-1234.tar.gz'), 'ab') as f:
+            f.write(b'tampered')
+        with patch.object(android, 'list_apps', return_value=[]):
+            result = backup.restore('2026-10-23-120000', ['saves:1234'], confirmed=True)
+        self.assertEqual(result['restored'], [])
+        self.assertIn('checksum', result['skipped'][0]['reason'])
+
+    def test_list_backups(self):
+        self.make()
+        (self.store / '.2026-10-23-130000.partial').mkdir()
+        (self.store / 'notes').mkdir()
+        listed = backup.list_backups()['backups']
+        self.assertEqual([b['name'] for b in listed], ['2026-10-23-120000'])
+        self.assertEqual(listed[0]['build'], '20260925.6191901')
+
+
+class Ssh(unittest.TestCase):
+    def test_bytes_go_as_input_and_files_as_stdin(self):
+        done = subprocess.CompletedProcess([], 0, b'{}', b'')
+        with patch.object(backup.frame_host, 'run_ssh', return_value=done) as run:
+            backup._ssh('true', src=b'{"parts": []}')
+            self.assertEqual(run.call_args.kwargs['input'], b'{"parts": []}')
+            self.assertNotIn('stdin', run.call_args.kwargs)
+            with tempfile.TemporaryFile() as f:
+                backup._ssh('true', src=f)
+                self.assertIs(run.call_args.kwargs['stdin'], f)
+            backup._ssh('true')
+            self.assertIs(run.call_args.kwargs['stdin'], subprocess.DEVNULL)
+            self.assertEqual(run.call_args.args[0][-1], 'true')
+        with patch.object(backup.frame_host, 'run_ssh',
+                          return_value=subprocess.CompletedProcess([], 1, b'', b'Permission denied')):
+            with self.assertRaisesRegex(backup.BackupError, 'Permission denied'):
+                backup._ssh('true')
+
+
+class GameMode(unittest.TestCase):
+    def test_command_is_only_ever_the_session_switch(self):
+        self.assertEqual(backup.session_command('steamosctl'), 'steamosctl switch-to-game-mode')
+        self.assertEqual(backup.session_command('steamos-session-select'), 'steamos-session-select gamescope')
+        self.assertEqual(backup.session_command('holo-session-select'), 'holo-session-select gamescope')
+        for bad in (None, '', 'rm -rf ~', '/tmp/steamos-session-select', 'steamos-session-select; reboot',
+                    'steamosctl switch-to-desktop-mode', 'steamosctl; reboot'):
+            with self.assertRaises(backup.BackupError):
+                backup.session_command(bad)
+
+    def test_switch_needs_confirmation_and_desktop_mode(self):
+        with patch.object(backup, '_ssh') as ssh:
+            with self.assertRaises(backup.BackupError):
+                backup.return_to_game_mode()
+            ssh.assert_not_called()
+        with patch.object(backup, 'session_status', return_value={'mode': 'game', 'selector': 'steamos-session-select'}), \
+                patch.object(backup, '_ssh') as ssh:
+            self.assertFalse(backup.return_to_game_mode(confirmed=True)['switched'])
+            ssh.assert_not_called()
+        with patch.object(backup, 'session_status', return_value={'mode': 'unknown', 'selector': 'steamos-session-select'}), \
+                patch.object(backup, '_ssh') as ssh:
+            with self.assertRaisesRegex(backup.BackupError, 'nothing was changed'):
+                backup.return_to_game_mode(confirmed=True)
+            ssh.assert_not_called()
+        with patch.object(backup, 'session_status', return_value={'mode': 'desktop', 'selector': 'steamos-session-select'}), \
+                patch.object(backup, '_ssh') as ssh:
+            self.assertTrue(backup.return_to_game_mode(confirmed=True)['switched'])
+            ssh.assert_called_once_with('steamos-session-select gamescope', timeout=60)
+            ssh.side_effect = backup.BackupError('the headset took too long to answer')  # the session restarted
+            self.assertTrue(backup.return_to_game_mode(confirmed=True)['switched'])
+            ssh.side_effect = backup.BackupError('Interactive authentication required')
+            with self.assertRaisesRegex(backup.BackupError, 'manual steps'):
+                backup.return_to_game_mode(confirmed=True)
+        with patch.object(backup, 'session_status', return_value={'mode': 'desktop', 'selector': None}), \
+                patch.object(backup, '_ssh') as ssh:
+            with self.assertRaises(backup.BackupError):
+                backup.return_to_game_mode(confirmed=True)
+            ssh.assert_not_called()
+
+
+class Endpoint(unittest.TestCase):
+    def test_guards_run_before_the_headset(self):
+        with patch.object(backup, '_ssh') as ssh, patch.object(server, 'start_job') as job:
+            for body in ({'action': 'plan', 'name': '../x'}, {'action': 'open', 'name': '..'},
+                         {'action': 'restore', 'name': '2026-10-23-120000', 'parts': ['saves:1234']},
+                         {'action': 'restore', 'name': '2026-10-23-120000', 'parts': ['saves:x'], 'confirm': True},
+                         {'action': 'gamemode'}, {'action': 'backup', 'kinds': ['ssh-keys']}, {'action': 'nope'}):
+                with self.assertRaises(server.Failure, msg=body) as caught:
+                    server.backup_action(body)
+                self.assertEqual(caught.exception.status, 400)
+            ssh.assert_not_called()
+            job.assert_not_called()
+            with patch.object(server, 'LOCAL', True):
+                with self.assertRaises(server.Failure):
+                    server.backup_action({'action': 'list'})
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/test_battery.py

@@ -0,0 +1,86 @@
+"""Read-only sysfs battery parsing; fixture values, no real headset access."""
+import sandbox  # noqa: F401
+from pathlib import Path
+import sys
+import tempfile
+import unittest
+from unittest import mock
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / 'ui'))
+import frame_status as status
+
+
+class Battery(unittest.TestCase):
+    def probe(self, fields):
+        # Real files exercise missing files, whitespace and integer conversion.
+        with tempfile.TemporaryDirectory() as tmp:
+            node = Path(tmp) / 'max1720x_bat_7-36'
+            node.mkdir()
+            for name, value in dict(type='Battery', **fields).items():
+                (node / name).write_text(str(value) + '\n')
+            with mock.patch.object(status.glob, 'glob', return_value=[str(node)]):
+                result = status.battery()
+            if result:
+                result.pop('source')
+            return result
+
+    def test_frame_units_and_optional_health(self):
+        b = self.probe(dict(capacity=73, status='Charging', voltage_now=3800000,
+                            current_now=1000000, temp=325, health='Good',
+                            charge_full=4600000, charge_full_design=5000000,
+                            cycle_count=42, time_to_full_now=3600))
+        self.assertEqual(b, dict(percent=73, status='Charging', watts=3.8,
+                                tempC=32.5, health='Good', timeToFull=3600,
+                                timeToEmpty=None, cycleCount=42, fullMah=4600,
+                                designMah=5000, capacityHealthPercent=92))
+
+    def test_zero_negative_current_and_temperature(self):
+        b = self.probe(dict(capacity=0, cycle_count=0, temp=-50,
+                            voltage_now=3800000, current_now=-1000000))
+        self.assertEqual((b['percent'], b['cycleCount'], b['tempC'], b['watts']),
+                         (0, 0, -5, -3.8))
+
+    def test_missing_optional_sensors_stay_null(self):
+        b = self.probe(dict(capacity=50, status='Discharging'))
+        self.assertEqual(b['percent'], 50)
+        self.assertTrue(all(value is None for key, value in b.items()
+                            if key not in ('percent', 'status')))
+
+    def test_invalid_values_do_not_break_other_readings(self):
+        for invalid in ('abc', '', '-1', '101', '12.5'):
+            b = self.probe(dict(capacity=invalid, status='Charging', temp='bad',
+                                charge_full=4500000, charge_full_design=0,
+                                time_to_full_now=-1, time_to_empty_now=4294967295,
+                                cycle_count=-1, voltage_now='bad', current_now=100))
+            self.assertIsNone(b['percent'])
+            for key in ('watts', 'tempC', 'capacityHealthPercent', 'timeToFull', 'timeToEmpty', 'cycleCount'):
+                self.assertIsNone(b[key], key)
+            self.assertEqual(b['status'], 'Charging')
+
+    def test_no_battery_and_unreadable_type(self):
+        with mock.patch.object(status.glob, 'glob', return_value=[]):
+            self.assertIsNone(status.battery())
+        with mock.patch.object(status.glob, 'glob', return_value=['/missing']), \
+                mock.patch('builtins.open', side_effect=PermissionError):
+            self.assertIsNone(status.battery())
+
+    def test_prefers_frame_and_excludes_peripheral_or_absent_batteries(self):
+        paths = ['/sys/class/power_supply/aaa', '/sys/class/power_supply/max1720x_bat_7-36']
+        def read(path):
+            return {'type': 'Battery', 'capacity': '80'}.get(path.rsplit('/', 1)[-1])
+        with mock.patch.object(status.glob, 'glob', return_value=paths), \
+                mock.patch.object(status, 'read', side_effect=read):
+            self.assertEqual(status.battery()['source'], paths[1])
+        self.assertIsNone(self.probe(dict(scope='Device', capacity=99)))
+        self.assertIsNone(self.probe(dict(present=0, capacity=99)))
+
+    def test_permission_failure_affects_only_one_sensor(self):
+        actual_open = open
+        def guarded(path, *args, **kwargs):
+            if str(path).endswith('/temp'):
+                raise PermissionError('unreadable')
+            return actual_open(path, *args, **kwargs)
+        with mock.patch('builtins.open', side_effect=guarded):
+            b = self.probe(dict(capacity=45, temp=300))
+        self.assertEqual(b['percent'], 45)
+        self.assertIsNone(b['tempC'])

tests/test_clipboard.py

@@ -0,0 +1,241 @@
+"""The clipboard both ways: the headset's read script, the server's answers, and the
+writer for this computer's clipboard on each platform. No headset: SSH and every
+clipboard program are mocked, and the read script runs against stub pgrep and qdbus6."""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import base64
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest import mock
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT / "ui"))
+import frame_host  # noqa: E402
+import server  # noqa: E402
+
+TEXT = "héllo, 世界 🎧\nsecond line\n\n"  # accents, CJK, an emoji outside the BMP, trailing newlines
+
+
+def b64(text):
+    return base64.b64encode(text.encode()).decode()
+
+
+class ReadCommand(unittest.TestCase):
+    def test_reads_klipper_on_the_desktop_bus(self):
+        self.assertIn("org.kde.klipper.klipper.getClipboardContents", server.COPY)
+        self.assertIn("DBUS_SESSION_BUS_ADDRESS=$bus qdbus6 org.kde.klipper /klipper", server.COPY)
+        self.assertIn(server.DESKTOP_CLOSED, server.COPY)
+        self.assertIn(server.CLIPBOARD_TOO_BIG, server.COPY)
+        self.assertIn(f"-gt {server.CLIPBOARD_LIMIT + 1} ]", server.COPY)  # the limit, plus qdbus6's newline
+        self.assertIn("base64 -w 0", server.COPY)
+
+    def test_command_carries_the_script_intact(self):
+        encoded = server.COPY_CMD.split("echo ", 1)[1].split(" |", 1)[0]
+        self.assertEqual(base64.b64decode(encoded).decode(), server.COPY)
+        self.assertNotIn("'", server.COPY_CMD)
+
+    def test_send_still_uses_the_same_bus(self):
+        self.assertIn(server.DESKTOP_BUS, server.PASTE)
+        self.assertIn(server.DESKTOP_BUS, server.COPY)
+        self.assertIn("setClipboardContents", server.PASTE)
+
+
+@unittest.skipUnless(sys.platform.startswith("linux") and shutil.which("bash") and shutil.which("base64"),
+                     "the script reads /proc, as on the Frame")
+class ReadScript(unittest.TestCase):
+    """server.COPY for real, with plasmashell's pid and Klipper stubbed."""
+
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp(prefix="frame-clip-"))
+        self.addCleanup(shutil.rmtree, self.dir, True)
+        self.clip = self.dir / "clip"
+        # A process whose environment holds the desktop's bus address, standing in for plasmashell.
+        self.plasma = subprocess.Popen(["sleep", "60"], env={**os.environ, "DBUS_SESSION_BUS_ADDRESS": "unix:path=/fake"})
+        self.addCleanup(self.plasma.wait)
+        self.addCleanup(self.plasma.kill)
+        (self.dir / "pgrep").write_text(f'#!/bin/sh\n[ -e "{self.dir}/closed" ] || echo {self.plasma.pid}\n')
+        (self.dir / "qdbus6").write_text(
+            '#!/bin/sh\n[ "$DBUS_SESSION_BUS_ADDRESS" = unix:path=/fake ] || exit 1\n'
+            f'[ "$3" = org.kde.klipper.klipper.getClipboardContents ] || exit 1\ncat "{self.clip}"; echo\n')
+        for name in ("pgrep", "qdbus6"):
+            (self.dir / name).chmod(0o755)
+
+    def run_script(self):
+        def local_ssh(remote, **kw):
+            r = subprocess.run(["bash", "-c", server.COPY], capture_output=True, text=True,
+                               env={**os.environ, "PATH": f"{self.dir}:{os.environ['PATH']}"})
+            if r.returncode:
+                raise server.Failure(r.stderr.strip())
+            return r.stdout
+        with mock.patch.object(server, "ssh", local_ssh):
+            return server.headset_clipboard()
+
+    def test_unicode_and_newlines_come_back_exactly(self):
+        self.clip.write_bytes(TEXT.encode())
+        self.assertEqual(self.run_script(), TEXT)
+
+    def test_empty(self):
+        self.clip.write_bytes(b"")
+        with self.assertRaises(server.Failure) as cm:
+            self.run_script()
+        self.assertEqual(cm.exception.status, 400)
+        self.assertIn("empty", str(cm.exception))
+
+    def test_too_big_is_refused_on_the_headset(self):
+        self.clip.write_bytes(b"x" * (server.CLIPBOARD_LIMIT + 1))
+        with self.assertRaises(server.Failure) as cm:
+            self.run_script()
+        self.assertEqual(cm.exception.status, 413)
+        self.assertIn("1 MB", str(cm.exception))
+        self.clip.write_bytes(b"x" * server.CLIPBOARD_LIMIT)
+        self.assertEqual(len(self.run_script()), server.CLIPBOARD_LIMIT)
+
+    def test_desktop_closed(self):
+        (self.dir / "closed").touch()
+        with self.assertRaises(server.Failure) as cm:
+            self.run_script()
+        self.assertEqual(cm.exception.status, 409)
+
+
+class HeadsetClipboard(unittest.TestCase):
+    def read(self, out=None, error=None):
+        def fake_ssh(remote, **kw):
+            self.assertEqual(remote, server.COPY_CMD)
+            self.assertNotIn("stdin", kw)
+            if error:
+                raise server.Failure(error)
+            return out
+        with mock.patch.object(server, "ssh", fake_ssh):
+            return server.headset_clipboard()
+
+    def test_drops_only_qdbus6s_newline(self):
+        self.assertEqual(self.read(b64(TEXT + "\n") + "\n"), TEXT)
+        self.assertEqual(self.read(b64("one line\n")), "one line")
+
+    def test_empty_and_images_say_so(self):
+        for out, words in ((b64("\n"), "empty"), ("", "empty"), (b64("▨ 640x480 32bpp\n"), "image")):
+            with self.assertRaises(server.Failure) as cm:
+                self.read(out)
+            self.assertEqual(cm.exception.status, 400)
+            self.assertIn(words, str(cm.exception))
+
+    def test_unreadable_output_is_a_fault(self):
+        for out in ("not base64!", base64.b64encode(b"\xff\xfe\n").decode()):
+            with self.assertRaises(server.Failure) as cm:
+                self.read(out)
+            self.assertEqual(cm.exception.status, 502)
+
+    def test_failures(self):
+        for error, status in (("The headset's desktop isn't open (plasmashell is not running).", 409),
+                              ("The headset's clipboard holds too much to copy (over 1 MB).", 413),
+                              ("Klipper call failed (bus: none)", 502)):
+            with self.assertRaises(server.Failure) as cm:
+                self.read(error=error)
+            self.assertEqual(cm.exception.status, status, error)
+
+
+class ClipboardRequests(unittest.TestCase):
+    def test_read_returns_the_text_for_the_page(self):
+        with mock.patch.object(server, "headset_clipboard", return_value=TEXT):
+            out = server.clipboard({"read": True})
+        self.assertEqual(out["text"], TEXT)
+        self.assertNotIn(TEXT, out["message"])
+
+    def test_to_computer_sets_this_computers_clipboard(self):
+        with mock.patch.object(server, "headset_clipboard", return_value=TEXT), \
+                mock.patch.object(frame_host, "set_clipboard_text") as put:
+            out = server.clipboard({"toComputer": True})
+        put.assert_called_once_with(TEXT)
+        self.assertNotIn("text", out)
+        self.assertEqual(out["message"], f"Copied {len(TEXT)} characters from the headset to this computer's clipboard")
+
+    def test_to_computer_without_a_clipboard_program(self):
+        with mock.patch.object(server, "headset_clipboard", return_value=TEXT), \
+                mock.patch.object(frame_host, "set_clipboard_text", side_effect=frame_host.HostError("Can't set the clipboard")):
+            with self.assertRaises(server.Failure) as cm:
+                server.clipboard({"toComputer": True})
+        self.assertEqual(cm.exception.status, 500)
+
+    def test_to_computer_refused_when_the_server_runs_on_the_headset(self):
+        with mock.patch.object(server, "LOCAL", True), mock.patch.object(server, "headset_clipboard") as read:
+            with self.assertRaises(server.Failure) as cm:
+                server.clipboard({"toComputer": True})
+        self.assertEqual(cm.exception.status, 400)
+        read.assert_not_called()
+
+    def test_flags_must_be_true(self):
+        # Anything else is a send, and an empty one is refused before SSH.
+        with mock.patch.object(server, "ssh") as ssh:
+            for body in ({"read": "yes"}, {"toComputer": 1}):
+                with self.assertRaises(server.Failure):
+                    server.clipboard(body)
+        ssh.assert_not_called()
+
+
+class SetClipboardText(unittest.TestCase):
+    def put(self, platform, have, text=TEXT, fail=()):
+        runs = []
+
+        def run(cmd, **kw):
+            runs.append((cmd, kw))
+            if cmd[0] in fail:
+                if fail[cmd[0]] == "timeout":
+                    raise subprocess.TimeoutExpired(cmd, 10)
+                return subprocess.CompletedProcess(cmd, 1)
+            return subprocess.CompletedProcess(cmd, 0)
+        flags = {"MAC": platform == "mac", "WINDOWS": platform == "windows", "LINUX": platform == "linux"}
+        with mock.patch.multiple(frame_host, **flags), \
+                mock.patch.object(frame_host.shutil, "which", lambda name: f"/bin/{name}" if name in have else None), \
+                mock.patch.object(frame_host.subprocess, "run", run):
+            frame_host.set_clipboard_text(text)
+        for _, kw in runs:
+            # Nothing captured or logged, and no pipes left for a clipboard daemon to hold open.
+            self.assertEqual((kw["stdout"], kw["stderr"]), (subprocess.DEVNULL, subprocess.DEVNULL))
+        return runs
+
+    def test_mac_pbcopy_in_utf8(self):
+        [(cmd, kw)] = self.put("mac", {"pbcopy"})
+        self.assertEqual(cmd, ["pbcopy"])
+        self.assertEqual(kw["input"], TEXT.encode("utf-8"))
+        self.assertEqual(kw["env"]["LC_CTYPE"], "UTF-8")
+
+    def test_windows_powershell_gets_base64_utf8(self):
+        [(cmd, kw)] = self.put("windows", {"powershell.exe", "clip.exe"})
+        self.assertEqual(cmd[0], "powershell.exe")
+        self.assertIn("Set-Clipboard", cmd[-1])
+        self.assertIn("FromBase64String", cmd[-1])
+        self.assertEqual(base64.b64decode(kw["input"]).decode("utf-8"), TEXT)
+
+    def test_windows_clip_fallback_gets_utf16_with_a_bom(self):
+        runs = self.put("windows", {"powershell.exe", "clip.exe"}, fail={"powershell.exe": 1})
+        self.assertEqual([c[0] for c, _ in runs], ["powershell.exe", "clip.exe"])
+        data = runs[1][1]["input"]
+        self.assertEqual(data[:2], b"\xff\xfe")
+        self.assertEqual(data[2:].decode("utf-16-le"), TEXT)
+
+    def test_linux_tries_wayland_then_x11(self):
+        [(cmd, kw)] = self.put("linux", {"wl-copy", "xclip", "xsel"})
+        self.assertEqual(cmd, ["wl-copy"])
+        self.assertEqual(kw["input"], TEXT.encode())
+        runs = self.put("linux", {"wl-copy", "xclip", "xsel"}, fail={"wl-copy": 1, "xclip": "timeout"})
+        self.assertEqual([c for c, _ in runs], [["wl-copy"], ["xclip", "-selection", "clipboard", "-in"],
+                                                ["xsel", "--clipboard", "--input"]])
+        [(cmd, _)] = self.put("linux", {"xsel"})
+        self.assertEqual(cmd[0], "xsel")
+
+    def test_nothing_to_set_it_with(self):
+        with self.assertRaises(frame_host.HostError) as cm:
+            self.put("linux", set())
+        self.assertIn("wl-clipboard", str(cm.exception))
+        with self.assertRaises(frame_host.HostError):
+            self.put("linux", {"wl-copy"}, fail={"wl-copy": 1})
+        with self.assertRaises(frame_host.HostError):
+            self.put("mac", set())
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_clips.py

@@ -0,0 +1,591 @@
+"""Recordings of the headset view and Steam clip exports (ui/frame_clips.py), without a headset.
+
+Steam's recordings are fixture trees in the layout frame_clips.py describes. The
+recording's shell runs for real under bash with a stand-in ffmpeg, so Stop, the time
+limit and the clean-up are the real script's behaviour. With ffmpeg installed here, a
+65-second DASH recording is made in Steam's file naming and exported for real.
+"""
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
+import json
+import os
+import shlex
+import shutil
+import subprocess
+import sys
+import tempfile
+import threading
+import time
+import unittest
+from pathlib import Path
+from unittest import mock
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "ui"))
+import frame_clips as clips  # noqa: E402
+
+POSIX = os.name != "nt" and shutil.which("bash")
+
+
+def write(path, data=b"x"):
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_bytes(data)
+    return path
+
+
+def session(folder, streams=(0, 1), chunks=3, mpd=None, first=1, pad=5):
+    """A session folder as Steam writes it: init + numbered chunks per stream."""
+    for n in streams:
+        write(folder / f"init-stream{n}.m4s", f"init{n};".encode())
+        for c in range(first, first + chunks):
+            write(folder / f"chunk-stream{n}-{c:0{pad}d}.m4s", f"s{n}c{c};".encode())
+    if mpd is not None:
+        write(folder / "session.mpd", mpd.encode())
+    return folder
+
+
+class Ids(unittest.TestCase):
+    def test_good_ids(self):
+        for cid in ("123/video/bg_620_20261020_201950",
+                    "123/clips/clip_620_20261020_202134/video/bg_620_20261020_201950",
+                    "9/clips/a/b/c/d"):
+            self.assertEqual(clips.parse_id(cid)[0], cid.split("/")[0])
+        self.assertEqual(clips.export_name("123/clips/clip_620_20261020_202134/video/bg_620_1"),
+                         "clip_620_20261020_202134.mp4")
+
+    def test_no_traversal_or_shell_from_ids(self):
+        for cid in ("", None, 5, "123", "123/video", "123/other/bg", "abc/video/bg", "/123/video/bg",
+                    "123/video/..", "123/video/.", "123/video/bg/../../../../.ssh", "123/video/.hidden",
+                    "123/video/bg;rm -rf ~", "123/video/bg$(id)", "123/video/bg name", "123/video/bg\n",
+                    "123/video/%2e%2e", "123\\video\\bg", "123/video//bg", "123/clips/a/b/c/d/e",
+                    "123/video/" + "a" * 101, "1234567890123/video/bg"):
+            with self.subTest(cid=cid), self.assertRaises(ValueError):
+                clips.parse_id(cid)
+            with self.subTest(cid=cid), self.assertRaises(ValueError):
+                clips.export_name(cid)
+
+    def test_export_paths_checked_before_delete(self):
+        good = f"{clips.WORK}/export-0123456789abcdef/clip_620.mp4"
+        self.assertEqual(clips.remove_command(good), f'rm -rf "$HOME"/{clips.WORK}/export-0123456789abcdef')
+        for bad in (None, "", "/etc/passwd", f"{clips.WORK}/export-0123456789abcdef/../../x.mp4",
+                    f"{clips.WORK}/export-xyz/clip.mp4", f"{clips.WORK}/../export-0123456789abcdef/a.mp4",
+                    f"{clips.WORK}/export-0123456789abcdef/a.mp4; rm -rf ~", ".ssh/export-0123456789abcdef/a.mp4"):
+            with self.subTest(bad=bad), self.assertRaises(ValueError):
+                clips.remove_command(bad)
+
+    def test_recording_names_checked(self):
+        for fn in (clips.finish_command, clips.cleanup_command, lambda n: clips.record_command(n, True)):
+            for bad in ("rec-1", "rec-20261020-201950; rm -rf ~", "../rec-20261020-201950", "*"):
+                with self.subTest(bad=bad), self.assertRaises(ValueError):
+                    fn(bad)
+
+
+class Sessions(unittest.TestCase):
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, ignore_errors=True)
+
+    def test_chunks_in_number_order_whatever_the_padding(self):
+        s = self.dir / "s"
+        write(s / "init-stream0.m4s")
+        for c in (10, 2, 1, 100, 9):
+            write(s / f"chunk-stream0-{c}.m4s")
+        write(s / "chunk-stream0-00003.m4s")
+        got = clips.read_session(s)
+        self.assertEqual([os.path.basename(p) for p in got[0]],
+                         ["init-stream0.m4s", "chunk-stream0-1.m4s", "chunk-stream0-2.m4s", "chunk-stream0-00003.m4s",
+                          "chunk-stream0-9.m4s", "chunk-stream0-10.m4s", "chunk-stream0-100.m4s"])
+        self.assertEqual(clips.chunk_gaps(got[0]), 100 - 6)
+
+    def test_unplayable_streams_and_strangers_left_out(self):
+        s = self.dir / "s"
+        session(s, streams=(0,), chunks=2)
+        write(s / "init-stream1.m4s")                 # no chunks
+        write(s / "chunk-stream2-00001.m4s")          # no init
+        write(s / "chunk-stream0-00001.m4s.part")     # not a chunk
+        write(s / "thumbnail.jpg")
+        (s / "chunk-stream0-00009.m4s").mkdir()       # a folder, not a file
+        if POSIX:
+            os.symlink("/etc/passwd", s / "chunk-stream0-00005.m4s")  # links aren't followed
+        got = clips.read_session(s)
+        self.assertEqual(list(got), [0])
+        self.assertEqual(len(got[0]), 3)
+
+    def test_manifest_duration(self):
+        for text, want in (('mediaPresentationDuration="PT1M23.4S"', 83.4), ('mediaPresentationDuration="PT2H"', 7200),
+                           ('mediaPresentationDuration="PT0H3M0.000S"', 180), ('mediaPresentationDuration="P1DT1S"', 86401),
+                           ('mediaPresentationDuration="PT"', None), ('nothing here', None), (None, None)):
+            self.assertEqual(clips.mpd_duration(text), want, text)
+
+    def test_listing_a_fixture_tree(self):
+        ud = self.dir / "userdata"
+        gr = ud / "123" / "gamerecordings"
+        session(gr / "clips" / "clip_620_20261020_202134" / "video" / "bg_620_20261020_201950", chunks=40,
+                mpd='<MPD mediaPresentationDuration="PT1M20.0S">')
+        write(gr / "clips" / "clip_620_20261020_202134" / "thumbnail.jpg")
+        session(gr / "video" / "bg_1172470_20261021_090000", streams=(0,), chunks=2)
+        session(gr / "video" / "odd-name", chunks=1)                   # no stamp: time from the files
+        (gr / "video" / "empty").mkdir()
+        session(gr / "video" / ".hidden", chunks=1)                    # not a name an id can carry
+        session(gr / "timelines" / "x", chunks=1)                      # not clips/ or video/
+        session(ud / "notanaccount" / "gamerecordings" / "video" / "bg_1_20260101_000000", chunks=1)
+        session(gr / "video" / "a" / "b" / "c" / "d" / "e", chunks=1)  # deeper than ids go
+        if POSIX:
+            os.symlink(gr, gr / "video" / "loop")                      # links aren't followed
+        for f in (gr / "video" / "odd-name").iterdir():
+            os.utime(f, (1e9, 1e9))  # 2001: older than the others
+        got = clips.list_recordings(ud)
+        self.assertEqual([c["id"] for c in got], ["123/video/bg_1172470_20261021_090000",
+                                                  "123/clips/clip_620_20261020_202134/video/bg_620_20261020_201950",
+                                                  "123/video/odd-name"])  # newest first
+        self.assertEqual(got[-1]["time"], 1e9)
+        by = {c["id"]: c for c in got}
+        clip = by["123/clips/clip_620_20261020_202134/video/bg_620_20261020_201950"]
+        self.assertEqual((clip["kind"], clip["appid"], clip["streams"], clip["chunks"], clip["gaps"], clip["duration"]),
+                         ("clip", "620", 2, 80, 0, 80.0))
+        self.assertEqual(clip["file"], "clip_620_20261020_202134.mp4")
+        self.assertEqual(clip["time"], time.mktime((2026, 10, 20, 20, 21, 34, 0, 0, -1)))
+        self.assertEqual(clip["size"], sum(f.stat().st_size for f in
+                                           (gr / "clips" / "clip_620_20261020_202134" / "video" / "bg_620_20261020_201950").iterdir()
+                                           if f.suffix == ".m4s"))
+        bg = by["123/video/bg_1172470_20261021_090000"]
+        self.assertEqual((bg["kind"], bg["appid"], bg["streams"], bg["duration"]), ("background", "1172470", 1, None))
+        self.assertIsNone(by["123/video/odd-name"]["appid"])
+        # How long since Steam last wrote to it: auto-sync waits for a clip still being recorded.
+        self.assertLess(clip["idle"], 60)
+        self.assertGreater(by["123/video/odd-name"]["idle"], 10**8)
+        self.assertEqual(clips.list_recordings(self.dir / "missing"), [])
+
+    def test_listing_marks_what_is_already_here(self):
+        here = self.dir / "here"
+        write(here / "clip_620_20261020_202134.mp4")
+        frame = lambda args, timeout: {"clips": [{"id": "1/clips/clip_620_20261020_202134/video/bg"},
+                                                 {"id": "1/video/bg_620_20261020_201950"}]}
+        got = clips.list_clips(frame, folder=here)
+        self.assertEqual([c["saved"] for c in got["clips"]], [True, False])
+        self.assertEqual(got["folder"], str(here))
+
+
+class Export(unittest.TestCase):
+    """The Frame's half of an export, against a fixture tree, with ffmpeg stood in."""
+
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, ignore_errors=True)
+        self.ud = self.dir / "home" / clips.STEAM_USERDATA
+        self.home = self.dir / "home"
+        self.cid = "123/clips/clip_620_20261020_202134/video/bg_620_20261020_201950"
+        session(self.ud / "123" / "gamerecordings" / "clips" / "clip_620_20261020_202134" / "video" /
+                "bg_620_20261020_201950", chunks=12)
+
+    def fake_ffmpeg(self, seen, rc=0):
+        def run(cmd, **kw):
+            ins = [cmd[i + 1] for i, a in enumerate(cmd) if a == "-i"]
+            seen.append({"cmd": cmd, "inputs": {Path(i).name: Path(i).read_bytes() for i in ins}})
+            if rc == 0:
+                Path(cmd[-1]).write_bytes(b"mp4")
+            return subprocess.CompletedProcess(cmd, rc, "", "Invalid data found" if rc else "")
+        return run
+
+    def test_streams_stitched_in_order_and_copied_not_reencoded(self):
+        seen = []
+        with mock.patch.object(clips.subprocess, "run", self.fake_ffmpeg(seen)):
+            got = clips.export(self.ud, self.cid, home=self.home)
+        self.assertRegex(got["path"], clips.EXPORT_PATH)
+        self.assertTrue(got["path"].endswith("/clip_620_20261020_202134.mp4"))
+        self.assertEqual(got["size"], 3)
+        cmd = seen[0]["cmd"]
+        self.assertEqual(cmd[cmd.index("-c") + 1], "copy")
+        self.assertEqual([cmd[i + 1] for i, a in enumerate(cmd) if a == "-map"], ["0", "1"])
+        for n in (0, 1):
+            self.assertEqual(seen[0]["inputs"][f"stream{n}.mp4"],
+                             f"init{n};".encode() + b"".join(f"s{n}c{c};".encode() for c in range(1, 13)))
+        out = self.home / got["path"]
+        self.assertEqual(sorted(p.name for p in out.parent.iterdir()), [out.name])  # stream files gone
+
+    def test_failed_join_leaves_nothing_behind(self):
+        with mock.patch.object(clips.subprocess, "run", self.fake_ffmpeg([], rc=1)):
+            with self.assertRaisesRegex(clips.ClipError, "Invalid data"):
+                clips.export(self.ud, self.cid, home=self.home)
+        self.assertEqual(list((self.home / clips.WORK).glob("export-*")), [])
+
+    def test_bad_or_missing_ids(self):
+        with self.assertRaises(ValueError):
+            clips.export(self.ud, "123/video/../../../../etc", home=self.home)
+        with self.assertRaises(ClipErrorOrOSError):
+            clips.export(self.ud, "123/video/nothing_here", home=self.home)
+
+    @unittest.skipUnless(POSIX, "symlinks")
+    def test_a_linked_account_cannot_reach_outside_userdata(self):
+        outside = session(self.dir / "elsewhere" / "gamerecordings" / "video" / "bg_1_20260101_000000", chunks=1)
+        os.symlink(self.dir / "elsewhere", self.ud / "456")
+        self.assertIsNotNone(outside)
+        with self.assertRaises(ValueError):
+            clips.export(self.ud, "456/video/bg_1_20260101_000000", home=self.home)
+
+    def test_no_space_on_the_frame(self):
+        full = mock.Mock(free=10)
+        with mock.patch.object(clips.shutil, "disk_usage", return_value=full):
+            with self.assertRaisesRegex(clips.ClipError, "Not enough free space on the Frame"):
+                clips.export(self.ud, self.cid, home=self.home)
+
+    def test_old_exports_swept(self):
+        work = self.home / clips.WORK
+        old, new = work / "export-aaaaaaaaaaaaaaaa", work / "export-bbbbbbbbbbbbbbbb"
+        write(old / "x.mp4"), write(new / "y.mp4")
+        os.utime(old, (time.time() - 7 * 3600,) * 2)
+        with mock.patch.object(clips.subprocess, "run", self.fake_ffmpeg([])):
+            clips.export(self.ud, self.cid, home=self.home)
+        self.assertFalse(old.exists())
+        self.assertTrue(new.exists())
+
+    def test_main_prints_json(self):
+        with mock.patch.object(clips.Path, "home", return_value=self.home), \
+                mock.patch("sys.stdout", new_callable=lambda: __import__("io").StringIO()) as out:
+            self.assertEqual(clips.main(["list"]), 0)
+            self.assertEqual(json.loads(out.getvalue())["clips"][0]["id"], self.cid)
+        with mock.patch("sys.stdout", new_callable=lambda: __import__("io").StringIO()) as out:
+            self.assertEqual(clips.main(["export", "../../x"]), 1)
+            self.assertEqual(json.loads(out.getvalue()), {"error": "bad clip id"})
+
+
+ClipErrorOrOSError = (clips.ClipError, OSError)
+
+
+class ComputerSide(unittest.TestCase):
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, ignore_errors=True)
+
+    def test_export_copies_then_deletes_on_the_frame(self):
+        path = f"{clips.WORK}/export-0123456789abcdef/clip_620.mp4"
+        calls = []
+        frame = lambda args, timeout: calls.append(("frame", args)) or {"path": path, "size": 3}
+        run = lambda cmd, timeout: calls.append(("run", cmd))
+        fetch = lambda remote, local: calls.append(("fetch", remote)) or Path(local).write_bytes(b"mp4")
+        got = clips.export_clip("1/clips/clip_620/video/bg", frame, run, fetch, folder=self.dir)
+        self.assertEqual(got["message"], "Saved clip_620.mp4 to ~/Videos/SteamFrame")
+        self.assertEqual((self.dir / "clip_620.mp4").read_bytes(), b"mp4")
+        self.assertEqual([c[0] for c in calls], ["frame", "fetch", "run"])
+        self.assertEqual(calls[2][1], clips.remove_command(path))
+        self.assertEqual([p.name for p in self.dir.iterdir()], ["clip_620.mp4"])
+
+    def test_failed_copy_leaves_no_partial_file_and_still_cleans_up(self):
+        path = f"{clips.WORK}/export-0123456789abcdef/clip_620.mp4"
+        ran = []
+
+        def fetch(remote, local):
+            Path(local).write_bytes(b"half")
+            raise RuntimeError("connection lost")
+        with self.assertRaisesRegex(RuntimeError, "connection lost"):
+            clips.export_clip("1/clips/clip_620/video/bg", lambda a, t: {"path": path, "size": 4},
+                              lambda cmd, timeout: ran.append(cmd), fetch, folder=self.dir)
+        self.assertEqual(list(self.dir.iterdir()), [])
+        self.assertEqual(ran, [clips.remove_command(path)])
+
+    def test_bad_id_never_reaches_the_frame(self):
+        never = mock.Mock(side_effect=AssertionError("reached the Frame"))
+        with self.assertRaises(ValueError):
+            clips.export_clip("1/video/../../.ssh", never, never, never, folder=self.dir)
+
+    def test_unexpected_path_from_the_frame_refused(self):
+        never = mock.Mock(side_effect=AssertionError("deleted or copied"))
+        with self.assertRaises(ValueError):
+            clips.export_clip("1/video/bg", lambda a, t: {"path": ".ssh/id_ed25519", "size": 1}, never, never,
+                              folder=self.dir)
+
+
+class Commands(unittest.TestCase):
+    def test_record_command_with_and_without_sound(self):
+        with_sound = shlex.split(clips.record_command("rec-20261020-201950", True))
+        self.assertEqual(with_sound[:2], ["bash", "-c"])
+        script = with_sound[2]
+        self.assertIn(f"-f v4l2 -video_size 1920x1080 -i {clips.STREAM_DEVICE}", script)
+        self.assertIn("-c:v libx264", script)
+        self.assertNotIn("v4l2m2m", script)  # the hardware encoder crashes ffmpeg
+        self.assertIn(f"-f pulse -i {clips.AUDIO_SOURCE}", script)
+        self.assertIn("-map 1:a:0", script)
+        self.assertIn("-c:a aac", script)
+        self.assertIn(f"-t {clips.MAX_SECONDS} ", script)
+        self.assertIn('"$d/rec-20261020-201950.mkv"', script)
+        self.assertEqual(script.count("-use_wallclock_as_timestamps 1"), 2)
+        quiet = shlex.split(clips.record_command("rec-20261020-201950", False))[2]
+        self.assertNotIn("pulse", quiet)
+        self.assertNotIn("-c:a", quiet)
+        self.assertEqual(quiet.count("-use_wallclock_as_timestamps 1"), 1)
+        with self.assertRaises(ValueError):
+            clips.record_command("rec-20261020-201950", True, max_seconds=clips.MAX_SECONDS + 1)
+
+    def test_probe_checks_device_space_and_sound(self):
+        probe = clips.probe_command()
+        self.assertIn(f"[ -e {clips.STREAM_DEVICE} ]", probe)
+        self.assertIn(f"-ge {clips.NEED_KB} ]", probe)
+        self.assertIn(f"timeout 5 ffmpeg -hide_banner -loglevel error -nostdin -f pulse -i {clips.AUDIO_SOURCE}", probe)
+        self.assertIn("echo audio=1; else echo audio=0", probe)
+        self.assertIn(f'd="$HOME/{clips.WORK}"', probe)
+
+    def test_finish_remuxes_without_reencoding(self):
+        cmd = clips.finish_command("rec-20261020-201950")
+        self.assertIn("-i rec-20261020-201950.mkv -map 0 -c copy -movflags +faststart rec-20261020-201950.mp4", cmd)
+        self.assertNotIn("libx264", cmd)
+        self.assertEqual(clips.cleanup_command("rec-20261020-201950"), f'rm -f "$HOME/{clips.WORK}/rec-20261020-201950".*')
+
+    def test_stitch_command(self):
+        self.assertEqual(clips.stitch_command(["a.mp4", "b.mp4"], "out.mp4"),
+                         ["ffmpeg", "-hide_banner", "-loglevel", "error", "-nostdin", "-y", "-i", "a.mp4", "-i", "b.mp4",
+                          "-map", "0", "-map", "1", "-c", "copy", "-movflags", "+faststart", "out.mp4"])
+
+
+# A stand-in for ffmpeg on the Frame: records how it was run, writes its output file,
+# and finishes the file when q arrives on stdin. Like SteamOS's ffmpeg n7.0 (seen on a
+# Frame), it catches SIGTERM and SIGINT and carries on, exiting only after more than
+# three. FAKE_FFMPEG_RUN makes the recording end by itself after that many seconds (the
+# time limit); FAKE_FFMPEG_DEAF makes it ignore q too, so only SIGKILL ends it.
+FAKE_FFMPEG = r'''#!/usr/bin/env python3
+import json, os, signal, sys, time
+home = os.environ["HOME"]
+with open(os.path.join(home, "ffmpeg-calls.jsonl"), "a") as f:
+    f.write(json.dumps(sys.argv[1:]) + "\n")
+out = sys.argv[-1]
+if "-c" in sys.argv and sys.argv[sys.argv.index("-c") + 1] == "copy":   # the remux after a recording
+    src = sys.argv[sys.argv.index("-i") + 1]
+    open(out, "wb").write(open(src, "rb").read() + b"+mp4")
+    sys.exit(0)
+import threading
+stop, signals = [], []
+def caught(*a):
+    signals.append(1)
+    if len(signals) > 3:
+        os._exit(255)  # "Received > 3 system signals, hard exiting"
+signal.signal(signal.SIGTERM, caught)
+signal.signal(signal.SIGINT, caught)
+def keys():
+    while True:
+        ch = os.read(0, 1)
+        if not ch:
+            return
+        if ch == b"q" and not os.environ.get("FAKE_FFMPEG_DEAF"):
+            stop.append("q")
+threading.Thread(target=keys, daemon=True).start()
+f = open(out, "wb")
+f.write(b"v"); f.flush()
+with open(os.path.join(home, "ffmpeg.pid.tmp"), "w") as p:
+    p.write(str(os.getpid()))
+os.replace(os.path.join(home, "ffmpeg.pid.tmp"), os.path.join(home, "ffmpeg.pid"))
+end = time.time() + float(os.environ.get("FAKE_FFMPEG_RUN", "60"))
+while not stop and time.time() < end:
+    f.write(b"v"); f.flush(); time.sleep(0.05)
+f.close()
+open(os.path.join(home, "ffmpeg-ended"), "w").write(stop[0] if stop else "limit")
+sys.exit(255 if stop else 0)
+'''
+
+
+@unittest.skipUnless(POSIX, "the recording's shell is bash on the Frame")
+class Recording(unittest.TestCase):
+    """The Recorder with the real record/finish/cleanup shell, run locally under bash."""
+
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, ignore_errors=True)
+        self.frame = self.dir / "frame"           # the Frame's home
+        (self.frame / clips.WORK).mkdir(parents=True)
+        bin_dir = self.dir / "bin"
+        write(bin_dir / "ffmpeg", FAKE_FFMPEG.encode()).chmod(0o755)
+        self.env = {**os.environ, "HOME": str(self.frame), "PATH": f"{bin_dir}{os.pathsep}{os.environ['PATH']}"}
+        self.here = self.dir / "Videos"
+        self.channels, self.released, self.ran = [], [], []
+        self.audio = "audio=1"
+
+    def open_channel(self, command, stderr):
+        proc = subprocess.Popen(shlex.split(command), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=stderr,
+                                env=self.env)
+        self.channels.append(proc)
+        self.addCleanup(lambda: proc.poll() is None and proc.kill())
+        return proc
+
+    def run_cmd(self, command, timeout):
+        self.ran.append(command)
+        if command == clips.probe_command():
+            return self.audio + "\n"  # needs /dev/video99, so answered here
+        r = subprocess.run(["bash", "-c", command], capture_output=True, text=True, env=self.env, timeout=timeout)
+        if r.returncode:
+            raise RuntimeError(r.stderr.strip() or f"exit {r.returncode}")
+        return r.stdout
+
+    def fetch(self, remote, local):
+        shutil.copyfile(self.frame / remote, local)
+
+    def recorder(self):
+        rec = clips.Recorder(self.open_channel, self.run_cmd, self.fetch,
+                             lambda fn: threading.Thread(target=fn, daemon=True).start(),
+                             release=self.released.append, folder=self.here)
+        start = rec.start
+
+        def started():
+            # "started" means ffmpeg was launched; wait until it's running, as it would be by a person's Stop.
+            pid = self.frame / "ffmpeg.pid"
+            for f in (pid, self.frame / "ffmpeg-ended"):
+                f.unlink(missing_ok=True)
+            got = start()
+            for _ in range(200):
+                if pid.exists() or (self.frame / "ffmpeg-ended").exists():
+                    break
+                time.sleep(0.02)
+            return got
+        rec.start = started
+        return rec
+
+    def wait_for(self, rec, states, timeout=20):
+        end = time.time() + timeout
+        while time.time() < end:
+            s = rec.status()
+            if s["state"] in states:
+                return s
+            time.sleep(0.05)
+        self.fail(f"still {rec.status()}")
+
+    def ffmpeg_calls(self):
+        return [json.loads(line) for line in (self.frame / "ffmpeg-calls.jsonl").read_text().splitlines()]
+
+    def test_stop_finishes_the_file_and_copies_it_here(self):
+        rec = self.recorder()
+        started = rec.start()
+        self.assertEqual((started["state"], started["audio"], started["message"]), ("recording", True, "Recording"))
+        self.assertIn("pulse", self.ffmpeg_calls()[0])
+        time.sleep(0.3)
+        self.assertEqual(rec.stop()["state"], "stopping")
+        done = self.wait_for(rec, ("saved", "failed"))
+        self.assertEqual(done["state"], "saved", done)
+        self.assertEqual((self.frame / "ffmpeg-ended").read_text(), "q")  # asked to finish, not killed
+        saved = Path(done["file"])
+        self.assertEqual(saved.parent, self.here)
+        self.assertRegex(saved.name, r"^rec-\d{8}-\d{6}\.mp4$")
+        self.assertTrue(saved.read_bytes().endswith(b"+mp4"))
+        self.assertEqual([p.name for p in self.here.iterdir()], [saved.name])          # no .incoming- left
+        self.assertEqual(list((self.frame / clips.WORK).iterdir()), [])                 # cleaned on the Frame
+        self.assertIsNotNone(self.channels[0].poll())                                   # the channel has gone
+        self.assertEqual(self.released, self.channels)
+        self.assertEqual(self.ran[-1], clips.cleanup_command(saved.stem))
+
+    def test_channel_closing_stops_ffmpeg_on_the_frame(self):
+        # The computer's ssh going away closes the channel just as Stop does.
+        rec = self.recorder()
+        rec.start()
+        pid = int((self.frame / "ffmpeg.pid").read_text())
+        self.channels[0].stdin.close()
+        self.wait_for(rec, ("saved", "failed"))
+        self.assertEqual((self.frame / "ffmpeg-ended").read_text(), "q")
+        with self.assertRaises(ProcessLookupError):
+            for _ in range(100):
+                os.kill(pid, 0)
+                time.sleep(0.05)
+
+    def test_an_ffmpeg_that_ignores_q_is_killed_not_left_recording(self):
+        self.env["FAKE_FFMPEG_DEAF"] = "1"
+        rec = self.recorder()
+        rec.start()
+        pid = int((self.frame / "ffmpeg.pid").read_text())
+        rec.stop()
+        self.wait_for(rec, ("saved", "failed"), timeout=30)
+        self.assertFalse((self.frame / "ffmpeg-ended").exists())  # it never finished by itself
+        with self.assertRaises(ProcessLookupError):
+            for _ in range(100):
+                os.kill(pid, 0)
+                time.sleep(0.05)
+
+    def test_time_limit_saves_on_its_own(self):
+        self.env["FAKE_FFMPEG_RUN"] = "0.3"
+        rec = self.recorder()
+        rec.start()
+        done = self.wait_for(rec, ("saved", "failed"))
+        self.assertEqual(done["state"], "saved", done)
+        self.assertEqual((self.frame / "ffmpeg-ended").read_text(), "limit")
+        with self.assertRaisesRegex(clips.ClipError, "Not recording"):
+            rec.stop()
+
+    def test_no_sound_records_video_and_says_so(self):
+        self.audio = "audio=0"
+        rec = self.recorder()
+        started = rec.start()
+        self.assertFalse(started["audio"])
+        self.assertIn("without sound", started["message"])
+        self.assertNotIn("pulse", self.ffmpeg_calls()[0])
+        rec.stop()
+        done = self.wait_for(rec, ("saved", "failed"))
+        self.assertIn("(no sound)", done["message"])
+
+    def test_one_at_a_time(self):
+        rec = self.recorder()
+        with self.assertRaisesRegex(clips.ClipError, "Not recording"):
+            rec.stop()
+        rec.start()
+        with self.assertRaises(clips.ClipError) as e:
+            rec.start()
+        self.assertEqual(e.exception.status, 409)
+        rec.stop()
+        self.wait_for(rec, ("saved",))
+        rec.start()  # a new one once the last is saved
+        rec.stop()
+        self.wait_for(rec, ("saved",))
+
+    def test_failed_start_reports_why(self):
+        rec = clips.Recorder(lambda cmd, err: subprocess.Popen(["bash", "-c", "echo 'no v4l2 here' >&2; exit 1"],
+                                                               stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=err),
+                             lambda cmd, t: "audio=1", self.fetch, lambda fn: fn(), release=self.released.append,
+                             folder=self.here)
+        with self.assertRaisesRegex(clips.ClipError, "no v4l2 here"):
+            rec.start()
+        self.assertEqual(rec.status()["state"], "failed")
+        self.assertEqual(len(self.released), 1)
+
+    def test_failed_probe_reports_why(self):
+        def run(cmd, timeout):
+            raise clips.ClipError("No headset view device (/dev/video99). Is SteamVR running?")
+        rec = clips.Recorder(mock.Mock(side_effect=AssertionError("recorded anyway")), run, self.fetch,
+                             lambda fn: fn(), folder=self.here)
+        with self.assertRaisesRegex(clips.ClipError, "Is SteamVR running"):
+            rec.start()
+        self.assertEqual(rec.status()["state"], "failed")
+
+    def test_empty_recording_is_an_error_not_a_file(self):
+        self.env["FAKE_FFMPEG_RUN"] = "0"
+        rec = self.recorder()
+        with mock.patch.object(clips, "finish_command", lambda name: f"echo 'The recording is empty' >&2; exit 1"):
+            rec.start()
+            done = self.wait_for(rec, ("saved", "failed"))
+        self.assertEqual(done["state"], "failed")
+        self.assertIn("The recording is empty", done["error"])
+        self.assertFalse(self.here.exists() and any(self.here.iterdir()))
+        self.assertEqual(list((self.frame / clips.WORK).iterdir()), [])
+
+
+@unittest.skipUnless(shutil.which("ffmpeg") and shutil.which("ffprobe"), "needs ffmpeg and ffprobe")
+class RealFfmpeg(unittest.TestCase):
+    """A 65 s recording in Steam's DASH naming (ffmpeg's own dash muxer names files the same
+    way), stitched by the real ffmpeg: longer than the 60 s Steam's own export manages."""
+
+    def test_export_of_a_long_recording(self):
+        d = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, d, ignore_errors=True)
+        ud = d / "home" / clips.STEAM_USERDATA
+        folder = ud / "123" / "gamerecordings" / "video" / "bg_620_20261020_201950"
+        folder.mkdir(parents=True)
+        r = subprocess.run(["ffmpeg", "-hide_banner", "-loglevel", "error", "-f", "lavfi", "-i", "testsrc=size=64x64:rate=10",
+                            "-f", "lavfi", "-i", "sine=frequency=440:sample_rate=8000", "-t", "65",
+                            "-c:v", "libx264", "-preset", "ultrafast", "-g", "20", "-c:a", "aac",
+                            "-seg_duration", "2", "-use_template", "1", "-use_timeline", "0",
+                            "-f", "dash", str(folder / "session.mpd")], capture_output=True, text=True)
+        if r.returncode != 0 or not (folder / "chunk-stream0-00001.m4s").exists():
+            self.skipTest("this ffmpeg can't write DASH with libx264: " + r.stderr[-300:])
+        listed = clips.list_recordings(ud)
+        self.assertEqual(len(listed), 1)
+        self.assertGreater(listed[0]["chunks"], 30)
+        got = clips.export(ud, listed[0]["id"], home=d / "home")
+        out = d / "home" / got["path"]
+        probe = json.loads(subprocess.run(["ffprobe", "-v", "error", "-show_streams", "-show_format", "-of", "json", str(out)],
+                                          capture_output=True, text=True, check=True).stdout)
+        self.assertEqual(sorted(s["codec_type"] for s in probe["streams"]), ["audio", "video"])
+        self.assertGreater(float(probe["format"]["duration"]), 64)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_desktop_battery_comfort.py

@@ -0,0 +1,105 @@
+"""Exercise the shipped desktop alert and its UI with a monotonic fake clock."""
+import pathlib
+import shutil
+import subprocess
+import unittest
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+
+
+@unittest.skipUnless(shutil.which('node'), 'Node exercises production page JavaScript')
+class DesktopBatteryComfort(unittest.TestCase):
+    def test_alert_confirmation_and_lifecycle(self):
+        page = (ROOT / 'ui/index.html').read_text(encoding='utf-8')
+        code = page.split('// ---- Desktop-only low-battery comfort:')[1].split('// ---- battery ----')[0]
+        code = code[code.index('class DesktopBatteryAlert'):]
+        js = r'''
+const assert = require('node:assert/strict');
+const elements = new Map();
+const $ = id => {
+  if (!elements.has(id)) elements.set(id, {checked:false, textContent:''});
+  return elements.get(id);
+};
+let now = 0, calls = [], toasts = [], devGen = 1, comfortActive = false;
+const performance = {now:()=>now};
+const listeners = {};
+const document = {hidden:false, addEventListener:(name,fn)=>listeners[name]=fn};
+const HOST = {mobile:false};
+const window = {frameApp:{notify:(message,request)=>{calls.push({message,request});return Promise.resolve();}}};
+const toast = message => toasts.push(message);
+''' + code + r'''
+(async () => {
+  const low = {percent:15,status:'Discharging',watts:-4};
+  const high = {...low,percent:20};
+  const a = new DesktopBatteryAlert();
+  assert.equal(a.sample(low,0),false);
+  assert.equal(a.sample(low,1000),false); // rapid manual refreshes cannot confirm
+  assert.equal(a.sample(low,30000),true);
+  for (let t=60000;t<=900000;t+=30000) assert.equal(a.sample(low,t),false);
+  assert.equal(a.sample(high,930000),false);
+  assert.equal(a.sample(low,960000),false); // a recovery spike did not rearm
+  assert.equal(a.sample(low,990000),false);
+  a.sample(high,1020000); a.sample(high,1050000);
+  assert.equal(a.sample(low,1080000),false);
+  assert.equal(a.sample(low,1110000),true);
+  const c = new DesktopBatteryAlert();
+  c.sample(low,0); assert.equal(c.sample(low,30000),true);
+  c.sample(high,60000); c.sample(high,90000);
+  c.sample(low,120000); assert.equal(c.sample(low,150000),false); // ten minute cap
+  assert.equal(c.sample(low,631000),false); // long gap requires fresh confirmation
+  assert.equal(c.sample(low,661000),true);
+  for (const bad of [null,{}, {...low,percent:null}, {...low,percent:NaN}, {...low,percent:-1},
+      {...low,percent:101},{...low,percent:'10'}, {...low,status:'Unknown'},
+      {...low,status:'Charging'}, {...low,status:'Full'}, {...low,status:'Not charging'},
+      {...low,watts:0},{...low,watts:-0.5},{...low,watts:null},{...low,watts:NaN}]) {
+    const b = new DesktopBatteryAlert();
+    b.sample(low,0); assert.equal(b.sample(bad,30000),false);
+    assert.equal(b.sample(low,60000),false); // unknown interrupts confirmation
+  }
+  const b = new DesktopBatteryAlert();
+  b.sample(low,0); b.invalidate(); assert.equal(b.sample(low,30000),false);
+  assert.equal(b.sample(low,121000),false); // stale gap
+  assert.equal(b.sample(low,120000),false); // clock rollback
+  desktopBatterySample(low); now=30000; desktopBatterySample(low);
+  assert.equal(calls.length,0); // opt-in starts unchecked
+  $('desktopBatteryAlert').checked=true; $('desktopBatteryAlert').onchange();
+  now=60000;desktopBatterySample(low);now=90000;desktopBatterySample(low);
+  assert.equal(calls.length,1); assert.equal(calls[0].request,false);
+  assert.match(calls[0].message,/15%.*draining/);
+  $('desktopBatteryAlert').checked=false;$('desktopBatteryAlert').onchange();
+  $('desktopBatteryAlert').checked=true;$('desktopBatteryAlert').onchange();
+  now=120000;desktopBatterySample(low);now=150000;desktopBatterySample(low);
+  assert.equal(calls.length,1); // toggling does not clear episode latch
+  desktopBattery.latched=false;desktopBattery.lastAlert=-Infinity;desktopBattery.invalidate();
+  now=180000;desktopBatterySample(low);document.hidden=true;listeners.visibilitychange();
+  document.hidden=false;now=210000;desktopBatterySample(low);assert.equal(calls.length,1);
+  now=240000;desktopBatterySample(low);assert.equal(calls.length,2);
+  desktopBattery.latched=false;desktopBattery.lastAlert=-Infinity;desktopBattery.invalidate();
+  comfortActive=true;$('batteryAlert').checked=true;
+  now=270000;desktopBatterySample(low);now=300000;desktopBatterySample(low);
+  assert.equal(calls.length,2); // existing session owns battery alerts
+  comfortActive=false;HOST.mobile=true;
+  now=330000;desktopBatterySample(low);now=360000;desktopBatterySample(low);
+  assert.equal(calls.length,2);
+  HOST.mobile=false;
+  window.frameApp.notify=()=>Promise.reject(Error('denied'));
+  now=390000;desktopBatterySample(low);now=420000;desktopBatterySample(low);
+  await new Promise(setImmediate);
+  assert.match($('desktopBatteryStatus').textContent,/not confirmed/);
+  now=450000;desktopBatterySample(low);
+  assert.equal(toasts.length,3); // delivery failure does not retry on refresh
+})().catch(e=>{console.error(e);process.exitCode=1;});
+'''
+        result = subprocess.run(['node', '-e', js], capture_output=True, text=True)
+        self.assertEqual(result.returncode, 0, result.stderr)
+
+    def test_existing_status_path_and_switch_reset(self):
+        page = (ROOT / 'ui/index.html').read_text(encoding='utf-8')
+        self.assertIn('desktopBatterySample(s.battery);', page)
+        switch = page.split('if (link.device !== null && devId !== link.device)')[1].split('devGen++;')[0]
+        self.assertIn('$("desktopBatteryAlert").checked = false;', switch)
+        refresh = page.split('function refresh()')[1].split('async function refreshAfterAudio')[0]
+        self.assertIn('desktopBattery.invalidate();', refresh)
+        block = page.split('// ---- Desktop-only low-battery comfort:')[1].split('// ---- battery ----')[0]
+        self.assertNotIn('setTimeout', block)
+        self.assertNotIn('api(', block)