Bump Frame Control to 0.4.19 (#162)

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

.claude/skills/steam-frame/SKILL.md

@@ -22,11 +22,15 @@ desktop or panels.
 | See the Frame from the Mac, or the Mac inside the Frame | `docs/streaming.md` | `scripts/run-on-frame.sh mac-screen` |
 | Files and clipboard | `docs/file-transfer.md` | `scripts/push.sh`, `scripts/paste-to-frame.sh` |
 | Android apps (Lepton) | `docs/apks.md` | `scripts/install-apk.sh` |
+| Browse and install Android apps from inside the headset (APK Store panel) | `docs/apks.md` | `scripts/store-on-frame.sh` |
 | Reach the Frame off the home LAN (Tailscale) | `docs/tailscale.md` | `scripts/tailscale-on-frame.sh` |
 | Install or buy Steam games, Frame ratings | `docs/steam-games.md` | `ui/frame_steam.py` |
 | Flatpaks | `docs/streaming.md` | `scripts/install-apps.sh` |
 | Launch an app inside the desktop panel | the script's header comment | `scripts/run-on-frame.sh` |
 | Mac GUI over all of this | `README.md` → Frame Control | `scripts/frame-ui.sh` |
+| iPhone/iPad app (server runs on the Frame, `FRAME_LOCAL=1`) | `docs/iphone.md` | `ios/`, `ui/local-bin/ssh` |
+| Recovery images, factory reset, boot loops | `docs/recovery-and-images.md`, `docs/how-the-frame-works.md` | `~/Downloads/steam-frame-recovery/` |
+| Test without the headset (the Frame OS image's own sshd) | `tests/frame-container/README.md` | `tests/frame-container/frame-image.sh` |
 | What's still unverified | `docs/open-questions.md` | — |
 
 Each script's usage is in its header comment. Read the header rather than
@@ -45,3 +49,9 @@ running `--help`: `paste-to-frame.sh`, `serve-bootstrap.sh` and
 - `sudo` on the Frame asks for the user's Developer Mode password. Hand those
   steps to the user (open Terminal) and keep automation to non-sudo commands.
 - The Mac uses BSD userland and zsh (no `timeout`, use `head -n`).
+- **First-party first.** For any new capability, investigate the first-party
+  way before anything else: Valve (SteamOS, Steam, Steam Link), Apple (the Mac
+  and iPhone), and KDE (the Frame's desktop is Plasma). It's usually the best
+  answer. If it isn't, write down why not. If it is, find what Frame Control
+  can do to make it easier to set up (install over SSH, pre-seed settings,
+  pair automatically, tell the user the one setting to turn on).

.gitattributes

@@ -6,3 +6,8 @@
 *.json text eol=lf
 *.md text eol=lf
 *.bat text eol=crlf
+# Test fixtures are byte-exact (hashes, signatures): never convert line endings.
+tests/fixtures/** -text
+*.apk binary
+*.jar binary
+*.obb binary

.github/APPROVED_CONTRIBUTORS

@@ -0,0 +1,9 @@
+# GitHub handles approved to bypass contribution auto-close
+# Format: <username> <capability>
+# capability:
+#   issue  future issues stay open
+#   pr     future issues and PRs stay open
+# Maintainers add people by replying `lgtmi` or `lgtm` on an issue
+# (.github/workflows/approve-contributor.yml); editing this file by hand works too.
+
+fbl100 pr

.github/FUNDING.yml

@@ -0,0 +1 @@
+ko_fi: alexsouthwell

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,51 @@
+name: Bug report
+description: Report something that's broken
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **Before you start:** read [CONTRIBUTING.md](https://github.com/saphid/frame-control/blob/main/CONTRIBUTING.md).
+
+        Issues from new contributors are auto-closed by default. A maintainer reviews them and reopens worthwhile ones. The [website feedback form](https://frame-control.pages.dev/feedback/) skips that queue.
+
+        Keep this short. If it doesn't fit on one screen, it's too long. Write in your own voice.
+
+  - type: textarea
+    id: description
+    attributes:
+      label: What happened?
+      description: Be specific. Include error messages and the last lines of the server log (Frame → Show Server Log).
+    validations:
+      required: true
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: Steps to reproduce
+      description: Minimal steps to trigger the bug.
+    validations:
+      required: false
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+    validations:
+      required: false
+
+  - type: input
+    id: version
+    attributes:
+      label: Frame Control version
+      description: e.g. v0.3.1
+    validations:
+      required: false
+
+  - type: input
+    id: os
+    attributes:
+      label: Computer and SteamOS build
+      description: e.g. Windows 11, SteamOS 20260922.6101926 (Steam Settings → System)
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Feedback form (no GitHub account needed, skips the queue)
+    url: https://frame-control.pages.dev/feedback/
+    about: Bugs, ideas and questions from the website become issues here without being auto-closed.

.github/ISSUE_TEMPLATE/idea.yml

@@ -0,0 +1,36 @@
+name: Idea or contribution proposal
+description: Propose a change or feature (required for new contributors before opening a PR)
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **Before you start:** read [CONTRIBUTING.md](https://github.com/saphid/frame-control/blob/main/CONTRIBUTING.md).
+
+        Issues from new contributors are auto-closed by default. A maintainer reviews them and reopens worthwhile ones.
+
+        Keep this short. If it doesn't fit on one screen, it's too long. Write in your own voice.
+
+  - type: textarea
+    id: what
+    attributes:
+      label: What do you want to change?
+      description: Be specific and concise.
+    validations:
+      required: true
+
+  - type: textarea
+    id: why
+    attributes:
+      label: Why?
+      description: What problem does this solve?
+    validations:
+      required: true
+
+  - type: textarea
+    id: how
+    attributes:
+      label: How? (optional)
+      description: Brief technical approach, and whether you'd like to implement it yourself.
+    validations:
+      required: false

.github/workflows/approve-contributor.yml

@@ -0,0 +1,238 @@
+# Contributor gate adapted from badlogic/pi-mono (MIT) at 6f7551516b84.
+# See CONTRIBUTING.md for how it works.
+
+name: Approve Contributor
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  approve:
+    # Only maintainers' comments that might approve someone join the queue, and
+    # they run one at a time so two lgtm replies can't race on APPROVED_CONTRIBUTORS.
+    # (The script below still checks for write access.)
+    if: >-
+      contains(github.event.comment.body, 'lgtm') &&
+      contains(fromJSON('["OWNER", "MEMBER", "COLLABORATOR"]'), github.event.comment.author_association)
+    concurrency:
+      group: approve-contributor
+      cancel-in-progress: false
+      queue: max
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          ref: ${{ github.event.repository.default_branch }}
+
+      - name: Update contributor approval
+        id: update
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        with:
+          script: |
+            const fs = require('fs');
+
+            const APPROVED_FILE = '.github/APPROVED_CONTRIBUTORS';
+            const VALID_CAPABILITIES = new Set(['issue', 'pr']);
+            const issueAuthor = context.payload.issue.user.login;
+            const commenter = context.payload.comment.user.login;
+            const commentBody = (context.payload.comment.body || '').trim();
+
+            const approvalAtStartPattern = /^[\s.]*(?:@[A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?(?:\s*,\s*|[.:]\s*|\s+))*(lgtmi|lgtm)(?=$|[\s]|[^\p{L}\p{N}_\s])/iu;
+            const approvalAtEndPattern = /(?:^|[\s.])(lgtmi|lgtm)\s*(?:[^\p{L}\p{N}_\s])?\s*$/iu;
+            const approvalMatch = commentBody.match(approvalAtStartPattern) ?? commentBody.match(approvalAtEndPattern);
+
+            if (!approvalMatch) {
+              console.log('Comment does not start or end with lgtm or lgtmi');
+              core.setOutput('status', 'skipped');
+              return;
+            }
+
+            const targetCapability = approvalMatch[1].toLowerCase() === 'lgtmi' ? 'issue' : 'pr';
+
+            try {
+              const { data: permissionLevel } = await github.rest.repos.getCollaboratorPermissionLevel({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                username: commenter,
+              });
+
+              if (!['admin', 'maintain', 'write'].includes(permissionLevel.permission)) {
+                console.log(`${commenter} does not have write access`);
+                core.setOutput('status', 'skipped');
+                return;
+              }
+            } catch {
+              console.log(`${commenter} does not have collaborator access`);
+              core.setOutput('status', 'skipped');
+              return;
+            }
+
+            function parseMentionedUsers(body) {
+              const users = [];
+              const seenUsers = new Set();
+              const mentionPattern = /(^|[^A-Za-z0-9_])@([A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?)(?![A-Za-z0-9-]|\/)/g;
+
+              for (const match of body.matchAll(mentionPattern)) {
+                const username = match[2];
+                const normalizedUser = username.toLowerCase();
+                if (seenUsers.has(normalizedUser)) {
+                  continue;
+                }
+                seenUsers.add(normalizedUser);
+                users.push(username);
+              }
+
+              return users;
+            }
+
+            function parseApprovedUsers(content) {
+              const lines = content.split('\n');
+              const entries = [];
+              const users = new Map();
+
+              for (const line of lines) {
+                const trimmed = line.trim();
+                if (!trimmed || trimmed.startsWith('#')) {
+                  entries.push({ type: 'other', line });
+                  continue;
+                }
+
+                const parts = trimmed.split(/\s+/);
+                if (parts.length !== 2) {
+                  console.log(`Skipping malformed line: ${line}`);
+                  entries.push({ type: 'other', line });
+                  continue;
+                }
+
+                const [username, capability] = parts;
+                const normalizedCapability = capability.toLowerCase();
+                if (!VALID_CAPABILITIES.has(normalizedCapability)) {
+                  console.log(`Skipping line with invalid capability: ${line}`);
+                  entries.push({ type: 'other', line });
+                  continue;
+                }
+
+                const normalizedUser = username.toLowerCase();
+                const entry = { type: 'user', username, normalizedUser, capability: normalizedCapability };
+                entries.push(entry);
+                users.set(normalizedUser, entry);
+              }
+
+              return { entries, users };
+            }
+
+            function stringifyApprovedUsers(entries) {
+              const normalizedEntries = [...entries];
+
+              while (normalizedEntries.length > 0) {
+                const lastEntry = normalizedEntries[normalizedEntries.length - 1];
+                if (lastEntry.type !== 'other' || lastEntry.line.trim() !== '') {
+                  break;
+                }
+                normalizedEntries.pop();
+              }
+
+              return `${normalizedEntries
+                .map((entry) => (entry.type === 'user' ? `${entry.username} ${entry.capability}` : entry.line))
+                .join('\n')}\n`;
+            }
+
+            const content = fs.readFileSync(APPROVED_FILE, 'utf8');
+            const { entries, users } = parseApprovedUsers(content);
+            const mentionedUsers = parseMentionedUsers(commentBody);
+            const approvalTargets = mentionedUsers.length > 0 ? mentionedUsers : [issueAuthor];
+            const changedTargets = [];
+            const alreadyTargets = [];
+
+            for (const username of approvalTargets) {
+              const normalizedUser = username.toLowerCase();
+              const existingEntry = users.get(normalizedUser);
+              const existingCapability = existingEntry?.capability ?? null;
+
+              if (existingCapability === 'pr' || existingCapability === targetCapability) {
+                alreadyTargets.push(existingEntry?.username ?? username);
+                console.log(`${username} is already approved for ${existingCapability}`);
+                continue;
+              }
+
+              if (existingEntry) {
+                existingEntry.capability = targetCapability;
+                changedTargets.push(existingEntry.username);
+              } else {
+                const entry = { type: 'user', username, normalizedUser, capability: targetCapability };
+                entries.push(entry);
+                users.set(normalizedUser, entry);
+                changedTargets.push(username);
+              }
+
+              console.log(`Set ${username} capability to ${targetCapability}`);
+            }
+
+            core.setOutput('capability', targetCapability);
+            core.setOutput('changed_targets', JSON.stringify(changedTargets));
+            core.setOutput('already_targets', JSON.stringify(alreadyTargets));
+
+            if (changedTargets.length === 0) {
+              core.setOutput('status', 'already');
+              return;
+            }
+
+            fs.writeFileSync(APPROVED_FILE, stringifyApprovedUsers(entries));
+            core.setOutput('status', 'changed');
+
+      - name: Commit and push
+        if: steps.update.outputs.status == 'changed'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add .github/APPROVED_CONTRIBUTORS
+          git diff --staged --quiet || git commit -m "chore: approve contributors from issue #${{ github.event.issue.number }}"
+          # main may have moved since checkout; replay the approval on top of it.
+          git pull --rebase origin "${{ github.event.repository.default_branch }}"
+          git push
+
+      - name: Comment on issue
+        if: steps.update.outputs.status == 'changed' || steps.update.outputs.status == 'already'
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        env:
+          CAPABILITY: ${{ steps.update.outputs.capability }}
+          CHANGED_TARGETS: ${{ steps.update.outputs.changed_targets }}
+          ALREADY_TARGETS: ${{ steps.update.outputs.already_targets }}
+        with:
+          script: |
+            const capability = process.env.CAPABILITY;
+            const changedTargets = JSON.parse(process.env.CHANGED_TARGETS || '[]');
+            const alreadyTargets = JSON.parse(process.env.ALREADY_TARGETS || '[]');
+            const defaultBranch = context.payload.repository.default_branch;
+            const formatTargets = (targets) => targets.map((target) => `@${target}`).join(', ');
+            const bodyLines = [];
+
+            if (changedTargets.length > 0) {
+              if (capability === 'issue') {
+                bodyLines.push(`${formatTargets(changedTargets)} approved for issues. Future issues will not be auto-closed. PRs still require \`lgtm\` at the start of a maintainer reply (optionally after one or more \`@username\` mentions) or at the end.`);
+              } else {
+                bodyLines.push(`${formatTargets(changedTargets)} approved for issues and PRs. Future issues and PRs will not be auto-closed.`);
+              }
+            }
+
+            if (alreadyTargets.length > 0) {
+              const verb = alreadyTargets.length === 1 ? 'is' : 'are';
+              bodyLines.push(`${formatTargets(alreadyTargets)} ${verb} already approved.`);
+            }
+
+            bodyLines.push('', `See [CONTRIBUTING.md](https://github.com/${context.repo.owner}/${context.repo.repo}/blob/${defaultBranch}/CONTRIBUTING.md).`);
+            const body = bodyLines.join('\n');
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body,
+            });
+

.github/workflows/checks.yml

@@ -5,6 +5,11 @@ on:
     branches: [main]
   pull_request:
 
+# A newer push to the same pull request supersedes a run still in progress.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   checks:
     runs-on: ubuntu-latest
@@ -17,9 +22,12 @@ jobs:
         with:
           node-version: "24"
       - name: Install zsh
-        run: sudo apt-get update -qq && sudo apt-get install -y -qq zsh
+        # The runner image's third-party apt sources (packages.microsoft.com) sometimes
+        # fail to refresh; Ubuntu's own lists still update, and the install fails if not.
+        run: (sudo apt-get update -qq || true) && sudo apt-get install -y -qq zsh
       - name: Script syntax
         run: |
+          sh -n ui/local-bin/ssh
           for f in scripts/*.sh frame/*/*.sh; do
             case "$(head -n 1 "$f")" in
               *zsh*) zsh -n "$f" ;;
@@ -28,13 +36,17 @@ jobs:
           done
       - name: Python compiles
         run: |
-          python -m py_compile ui/*.py apk-catalog/*.py frame/android/*.py
+          python -m py_compile ui/*.py apk-catalog/*.py frame/android/*.py ios/scripts/*.py
           # Valve's devkit-utils (vendored; run by the Frame's python3). Most have no .py suffix.
           python -m py_compile $(find frame/devkit-utils -type f ! -name '*.*' ! -name LICENSE) frame/devkit-utils/devkit_utils/*.py
       - name: Server tests
         run: python -m unittest discover -s tests -v
       - name: App syntax
-        run: node --check app/main.js && node --check app/build/make-icon.js && node --check app/build/fetch-deps.js && node --check app/preload.js && node --check app/install-link.js
+        run: node --check app/main.js && node --check app/build/make-icon.js && node --check app/build/fetch-deps.js && node --check app/preload.js && node --check app/install-link.js && node --check app/updater.js
+      - name: App tests
+        run: node --test app/test/*.test.js
+      - name: Website
+        run: node --test site/test/*.test.mjs && node --check site/public/js/site.js && node --check site/public/js/feedback.js
 
   # The server runs on each desktop OS the app ships for, on the Python version
   # the app bundles (app/build/fetch-deps.js) and, on Ubuntu, a newer one.
@@ -57,3 +69,30 @@ jobs:
           python-version: ${{ matrix.python }}
       - name: Server tests
         run: python -m unittest discover -s tests -v
+
+  # The iPhone app: builds for the Simulator and runs its unit tests.
+  ios:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Generate the project
+        run: brew install xcodegen && cd ios && xcodegen generate
+      - name: Build and test
+        run: |
+          cd ios
+          udid=$(xcrun simctl list devices available -j | python3 -c 'import json,sys; d=json.load(sys.stdin)["devices"]; print(next(x["udid"] for r in d for x in d[r] if x["name"].startswith("iPhone")))')
+          xcodebuild -project FrameControl.xcodeproj -scheme FrameControl -destination "platform=iOS Simulator,id=$udid" CODE_SIGNING_ALLOWED=NO test
+
+  # End-to-end tests against the fake Frame (tests/fakeframe): Arch Linux ARM
+  # in Docker, on a native arm64 runner like the headset. See docs/testing.md.
+  e2e:
+    runs-on: ubuntu-24.04-arm
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install zsh
+        # The runner image's third-party apt sources (packages.microsoft.com) sometimes
+        # fail to refresh; Ubuntu's own lists still update, and the install fails if not.
+        run: (sudo apt-get update -qq || true) && sudo apt-get install -y -qq zsh
+      - name: End-to-end tests
+        run: scripts/e2e.sh

.github/workflows/issue-gate.yml

@@ -0,0 +1,134 @@
+# Contributor gate adapted from badlogic/pi-mono (MIT) at 6f7551516b84.
+# See CONTRIBUTING.md for how it works.
+
+name: Issue Gate
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  check-contributor:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      issues: write
+    steps:
+      - name: Check issue author
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        with:
+          script: |
+            const APPROVED_FILE = '.github/APPROVED_CONTRIBUTORS';
+            const VALID_CAPABILITIES = new Set(['issue', 'pr']);
+            const TRUSTED_BOT_AUTHORS = new Set(['dependabot[bot]', 'sentry[bot]', 'claude[bot]']);
+            const issueAuthor = context.payload.issue.user.login;
+            const defaultBranch = context.payload.repository.default_branch;
+            const isBotAuthor = issueAuthor.endsWith('[bot]');
+
+            if (TRUSTED_BOT_AUTHORS.has(issueAuthor)) {
+              console.log(`Skipping trusted bot: ${issueAuthor}`);
+              return;
+            }
+
+            async function getPermission(username) {
+              try {
+                const { data: permissionLevel } = await github.rest.repos.getCollaboratorPermissionLevel({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  username,
+                });
+                return permissionLevel.permission;
+              } catch {
+                return null;
+              }
+            }
+
+            async function getTextFile(path) {
+              const { data: fileContent } = await github.rest.repos.getContent({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                path,
+                ref: defaultBranch,
+              });
+
+              if (!('content' in fileContent) || typeof fileContent.content !== 'string') {
+                throw new Error(`Expected file content for ${path}`);
+              }
+
+              return Buffer.from(fileContent.content, 'base64').toString('utf8');
+            }
+
+            function parseApprovedUsers(content) {
+              const users = new Map();
+
+              for (const rawLine of content.split('\n')) {
+                const line = rawLine.trim();
+                if (!line || line.startsWith('#')) continue;
+
+                const parts = line.split(/\s+/);
+                if (parts.length !== 2) {
+                  console.log(`Skipping malformed line: ${rawLine}`);
+                  continue;
+                }
+
+                const [username, capability] = parts;
+                const normalizedCapability = capability.toLowerCase();
+                if (!VALID_CAPABILITIES.has(normalizedCapability)) {
+                  console.log(`Skipping line with invalid capability: ${rawLine}`);
+                  continue;
+                }
+
+                users.set(username.toLowerCase(), normalizedCapability);
+              }
+
+              return users;
+            }
+
+            const permission = await getPermission(issueAuthor);
+            if (!isBotAuthor && ['admin', 'maintain', 'write'].includes(permission)) {
+              console.log(`${issueAuthor} is a collaborator with ${permission} access`);
+              return;
+            }
+
+            const approvedContent = await getTextFile(APPROVED_FILE);
+            const approvedUsers = parseApprovedUsers(approvedContent);
+            const capability = approvedUsers.get(issueAuthor.toLowerCase());
+
+            if (!isBotAuthor && (capability === 'issue' || capability === 'pr')) {
+              console.log(`${issueAuthor} is approved for ${capability}`);
+              return;
+            }
+
+            const message = [
+              'This issue was auto-closed. All issues from new contributors are auto-closed by default.',
+              '',
+              `Maintainers review auto-closed issues regularly and reopen worthwhile ones. Issues that do not meet the quality bar in [CONTRIBUTING.md](https://github.com/${context.repo.owner}/${context.repo.repo}/blob/${defaultBranch}/CONTRIBUTING.md) will not be reopened or receive a reply.`,
+              '',
+              'Just want to report a bug or share an idea? The [website feedback form](https://frame-control.pages.dev/feedback/) skips this queue.',
+              '',
+              'If a maintainer replies `lgtmi` on one of your issues, your future issues will stay open. If a maintainer replies `lgtm`, your future issues and PRs will stay open. The command must be at the start of the reply (optionally after one or more `@username` mentions) or at the end.',
+              '',
+              `See [CONTRIBUTING.md](https://github.com/${context.repo.owner}/${context.repo.repo}/blob/${defaultBranch}/CONTRIBUTING.md).`,
+            ].join('\n');
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: message,
+            });
+
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              labels: ['untriaged'],
+            });
+
+            await github.rest.issues.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              state: 'closed',
+              state_reason: 'not_planned',
+            });

.github/workflows/issue-triage-labels.yml

@@ -0,0 +1,145 @@
+# Contributor gate adapted from badlogic/pi-mono (MIT) at 6f7551516b84.
+# See CONTRIBUTING.md for how it works.
+
+name: Issue Triage Labels
+
+on:
+  issues:
+    types: [reopened, labeled]
+
+jobs:
+  update-labels:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: Update triage labels
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        with:
+          script: |
+            const UNTRIAGED_LABEL = 'untriaged';
+            const NO_ACTION_LABEL = 'no-action';
+            const LAST_READ_LABEL = 'last-read';
+            const TO_DISCUSS_LABEL = 'to-discuss';
+            const INPROGRESS_LABEL = 'inprogress';
+
+            function issueHasLabel(issue, labelName) {
+              return (issue.labels ?? []).some((label) => label.name === labelName);
+            }
+
+            async function removeLabelIfPresent(issueNumber, issue, labelName) {
+              if (!issueHasLabel(issue, labelName)) {
+                console.log(`Issue #${issueNumber} does not have ${labelName}`);
+                return;
+              }
+
+              try {
+                await github.rest.issues.removeLabel({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: issueNumber,
+                  name: labelName,
+                });
+                console.log(`Removed ${labelName} from #${issueNumber}`);
+              } catch (error) {
+                if (error.status === 404) {
+                  console.log(`Label ${labelName} was already absent from #${issueNumber}`);
+                  return;
+                }
+                throw error;
+              }
+            }
+
+            if (context.payload.action === 'reopened') {
+              await removeLabelIfPresent(context.issue.number, context.payload.issue, UNTRIAGED_LABEL);
+              await removeLabelIfPresent(context.issue.number, context.payload.issue, NO_ACTION_LABEL);
+              return;
+            }
+
+            if (context.payload.action === 'labeled' && context.payload.label?.name === NO_ACTION_LABEL) {
+              await removeLabelIfPresent(context.issue.number, context.payload.issue, UNTRIAGED_LABEL);
+              return;
+            }
+
+            if (context.payload.action !== 'labeled' || context.payload.label?.name !== LAST_READ_LABEL) {
+              console.log('Not a last-read label event');
+              return;
+            }
+
+            const currentIssueNumber = context.issue.number;
+            const lastReadIssues = await github.paginate(github.rest.issues.listForRepo, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'all',
+              labels: LAST_READ_LABEL,
+              per_page: 100,
+            });
+
+            const previousIssueNumbers = lastReadIssues
+              .filter((issue) => !issue.pull_request)
+              .map((issue) => issue.number)
+              .filter((issueNumber) => issueNumber !== currentIssueNumber);
+
+            if (previousIssueNumbers.length === 0) {
+              console.log('No previous last-read issue found');
+              return;
+            }
+
+            const previousIssueNumber = Math.max(...previousIssueNumbers);
+            if (currentIssueNumber <= previousIssueNumber) {
+              console.log(
+                `Last-read was added to old issue #${currentIssueNumber}; latest last-read is #${previousIssueNumber}`,
+              );
+              return;
+            }
+
+            const untriagedIssues = await github.paginate(github.rest.issues.listForRepo, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'all',
+              labels: UNTRIAGED_LABEL,
+              per_page: 100,
+            });
+
+            const issuesToMark = untriagedIssues
+              .filter((issue) => !issue.pull_request)
+              .filter((issue) => issue.number >= previousIssueNumber && issue.number <= currentIssueNumber)
+              .sort((a, b) => a.number - b.number);
+
+            if (issuesToMark.length === 0) {
+              console.log(`No untriaged issues found from #${previousIssueNumber} to #${currentIssueNumber}`);
+              return;
+            }
+
+            for (const issue of issuesToMark) {
+              if (issueHasLabel(issue, TO_DISCUSS_LABEL)) {
+                console.log(`Skipped ${NO_ACTION_LABEL} for #${issue.number} because it has ${TO_DISCUSS_LABEL}`);
+              } else {
+                await github.rest.issues.addLabels({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: issue.number,
+                  labels: [NO_ACTION_LABEL],
+                });
+                console.log(`Added ${NO_ACTION_LABEL} to #${issue.number}`);
+              }
+
+              await github.rest.issues.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                state: 'closed',
+                state_reason: 'not_planned',
+              });
+              console.log(`Closed #${issue.number} as not planned`);
+
+              await removeLabelIfPresent(issue.number, issue, INPROGRESS_LABEL);
+
+              await github.rest.issues.removeLabel({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                name: UNTRIAGED_LABEL,
+              });
+              console.log(`Removed ${UNTRIAGED_LABEL} from #${issue.number}`);
+            }

.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/pr-gate.yml

@@ -0,0 +1,131 @@
+# Contributor gate adapted from badlogic/pi-mono (MIT) at 6f7551516b84.
+# See CONTRIBUTING.md for how it works.
+
+name: PR Gate
+
+on:
+  pull_request_target:
+    types: [opened]
+
+jobs:
+  check-contributor:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      issues: write
+      pull-requests: write
+    steps:
+      - name: Check if contributor is approved
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        with:
+          script: |
+            const APPROVED_FILE = '.github/APPROVED_CONTRIBUTORS';
+            const VALID_CAPABILITIES = new Set(['issue', 'pr']);
+            const TRUSTED_BOT_AUTHORS = new Set(['dependabot[bot]', 'sentry[bot]', 'claude[bot]']);
+            const prAuthor = context.payload.pull_request.user.login;
+            const defaultBranch = context.payload.repository.default_branch;
+            const isBotAuthor = prAuthor.endsWith('[bot]');
+
+            if (TRUSTED_BOT_AUTHORS.has(prAuthor)) {
+              console.log(`Skipping trusted bot: ${prAuthor}`);
+              return;
+            }
+
+            async function getPermission(username) {
+              try {
+                const { data: permissionLevel } = await github.rest.repos.getCollaboratorPermissionLevel({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  username,
+                });
+                return permissionLevel.permission;
+              } catch {
+                return null;
+              }
+            }
+
+            async function getTextFile(path) {
+              const { data: fileContent } = await github.rest.repos.getContent({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                path,
+                ref: defaultBranch,
+              });
+
+              if (!('content' in fileContent) || typeof fileContent.content !== 'string') {
+                throw new Error(`Expected file content for ${path}`);
+              }
+
+              return Buffer.from(fileContent.content, 'base64').toString('utf8');
+            }
+
+            function parseApprovedUsers(content) {
+              const users = new Map();
+
+              for (const rawLine of content.split('\n')) {
+                const line = rawLine.trim();
+                if (!line || line.startsWith('#')) continue;
+
+                const parts = line.split(/\s+/);
+                if (parts.length !== 2) {
+                  console.log(`Skipping malformed line: ${rawLine}`);
+                  continue;
+                }
+
+                const [username, capability] = parts;
+                const normalizedCapability = capability.toLowerCase();
+                if (!VALID_CAPABILITIES.has(normalizedCapability)) {
+                  console.log(`Skipping line with invalid capability: ${rawLine}`);
+                  continue;
+                }
+
+                users.set(username.toLowerCase(), normalizedCapability);
+              }
+
+              return users;
+            }
+
+            async function closePullRequest(message) {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.payload.pull_request.number,
+                body: message,
+              });
+
+              await github.rest.pulls.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: context.payload.pull_request.number,
+                state: 'closed',
+              });
+            }
+
+            const permission = await getPermission(prAuthor);
+            if (!isBotAuthor && ['admin', 'maintain', 'write'].includes(permission)) {
+              console.log(`${prAuthor} is a collaborator with ${permission} access`);
+              return;
+            }
+
+            const approvedContent = await getTextFile(APPROVED_FILE);
+            const approvedUsers = parseApprovedUsers(approvedContent);
+            const capability = approvedUsers.get(prAuthor.toLowerCase());
+
+            if (!isBotAuthor && capability === 'pr') {
+              console.log(`${prAuthor} is approved for PRs`);
+              return;
+            }
+
+            console.log(`${prAuthor} is not approved, closing PR`);
+
+            const message = [
+              'This PR was auto-closed. Only contributors approved with `lgtm` can open PRs. Open an issue first and ask a maintainer for approval.',
+              '',
+              `Maintainers review auto-closed issues regularly. Issues that do not meet the quality bar in [CONTRIBUTING.md](https://github.com/${context.repo.owner}/${context.repo.repo}/blob/${defaultBranch}/CONTRIBUTING.md) will not be reopened or receive a reply.`,
+              '',
+              'If a maintainer replies `lgtmi`, your future issues will stay open. If a maintainer replies `lgtm`, your future issues and PRs will stay open. The command must be at the start of the reply (optionally after one or more `@username` mentions) or at the end.',
+              '',
+              `See [CONTRIBUTING.md](https://github.com/${context.repo.owner}/${context.repo.repo}/blob/${defaultBranch}/CONTRIBUTING.md).`,
+            ].join('\n');
+
+            await closePullRequest(message);

.github/workflows/release.yml

@@ -2,19 +2,67 @@ 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 touch the app build the same installers as artifacts.
+# Pull requests that change how the installers are built (the Electron app, the
+# 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/**", "ui/**", "scripts/**", "frame/**", "apk-catalog/**", ".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.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions:
   contents: write
 
 jobs:
+  # One job makes the draft, before the builds: three matrix jobs each running
+  # "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. 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.
+  draft:
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create the draft release
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+        run: |
+          tag="${GITHUB_REF_NAME}"
+          # 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 \
+              || { echo "tag $tag isn't on GitHub" >&2; exit 1; }
+            id=$(gh api -X POST "repos/$GH_REPO/releases" -f tag_name="$tag" -f name="Frame Control ${tag#v}" \
+              -F draft=true -f body="" --jq .id)
+          fi
+          [ -n "$id" ] || { echo "no release id for $tag; not PATCHing releases/" >&2; exit 1; }
+          gh api -X PATCH "repos/$GH_REPO/releases/$id" -f tag_name="$tag" --jq '"release " + (.id|tostring) + " tag_name " + .tag_name'
+
   build:
+    needs: draft
+    # Still runs for pull requests and manual runs, where the draft job is skipped.
+    if: ${{ !failure() && !cancelled() }}
     strategy:
       fail-fast: false
       matrix:
@@ -34,22 +82,88 @@ 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
         run: npm ci && npm run ${{ matrix.script }}
         env:
           CSC_IDENTITY_AUTO_DISCOVERY: "false"
+      # The installer, not just the unpacked build: its 7-Zip payload once dropped
+      # the OpenXR layer's arm64 library without any error. Install it silently
+      # and compare every installed file with the unpacked build.
+      - name: Check the Windows installer installs every file
+        if: matrix.os == 'windows-latest'
+        shell: pwsh
+        run: |
+          $setup = Get-ChildItem app/dist/Frame-Control-Setup-*.exe | Select-Object -First 1
+          $p = Start-Process -FilePath $setup.FullName -ArgumentList '/S' -Wait -PassThru
+          if ($p.ExitCode -ne 0) { throw "installer exited $($p.ExitCode)" }
+          $installed = Join-Path $env:LOCALAPPDATA 'Programs\Frame Control'
+          for ($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: ${{ github.repository }}
         run: |
+          # A release-notes edit can make GitHub expose a draft as untagged-*.
+          # Keep the normal upload path; recover only that lookup failure.
+          if result=$(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="${GITHUB_REF_NAME}"
-          gh release view "$tag" >/dev/null 2>&1 || gh release create "$tag" --draft --title "Frame Control ${tag#v}" --notes ""
+          ids=$(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: ${{ !startsWith(github.ref, 'refs/tags/') }}
         with:
           name: frame-control-${{ matrix.os }}
           path: |

.github/workflows/remove-inprogress-on-close.yml

@@ -0,0 +1,34 @@
+# Contributor gate adapted from badlogic/pi-mono (MIT) at 6f7551516b84.
+# See CONTRIBUTING.md for how it works.
+
+name: Remove In Progress Label On Close
+
+on:
+  issues:
+    types: [closed]
+
+jobs:
+  remove-label:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: Remove inprogress label
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        with:
+          script: |
+            const labelName = 'inprogress';
+            const labels = context.payload.issue.labels ?? [];
+            const hasLabel = labels.some((label) => label.name === labelName);
+
+            if (!hasLabel) {
+              console.log(`Issue does not have ${labelName} label`);
+              return;
+            }
+
+            await github.rest.issues.removeLabel({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              name: labelName,
+            });

.gitignore

@@ -1,6 +1,21 @@
 .DS_Store
 __pycache__/
 apk-catalog/data/cache/
-apk-catalog/data/index-v2.json*
+apk-catalog/data/index-v2*.json*
 compat-db/.env.lakebed.server
 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 +1,130 @@
+# Changelog
+
+## Unreleased
+
+- Use gamescope's input for the keyboard and trackpad, following the focused
+  headset panel without installing an input service. Start KDE Connect only for
+  accents and emoji, keeping queued text ordered and cancelling it on headset
+  switches. Retain intended-headset checks before starting either control and
+  prevent Unicode helper startup from deadlocking with a headset switch.
+- Keep accepted keyboard text when the Unicode queue is full: reject new batches
+  before sending their clicks or keys, and count in-flight text toward the limit.
+  Retain unsent text after helper failures/timeouts, report the error and resume
+  it with Try again. Clean up failed workers without touching a new headset's queue.
+  [Current verification and device limits](docs/evidence/pad-gamescope-2026-10-24.md).
+
+- Keep media playback running when SteamVR refuses the optional theatre dark
+  surround, including a retry after standby. Log the refusal and play without
+  the surround. Overlay teardown attempts every owned handle and always calls
+  OpenVR shutdown even if a handle fails to close.
+
+- Check the desktop server's single-instance lock before starting background
+  downloads, so a second server exits cleanly with the existing "already
+  running" message.
+
+- Recheck saved spatial layouts on SteamOS 0.5.6 / SteamVR 2.18.2 (issue #31).
+  Read-only probes expose some panel geometry, but safe restoration of
+  Steam/gamescope docking and positions remains unverified. Record exact API
+  results and a reproducible probe; saved layouts remain unavailable.
+
+- Record packaged v0.4.17 Desktop Capture succeeding on a mapped nested KDE
+  compositor on a real Frame with SteamOS 0.5.6. Headset overlay visibility was
+  not established; this is evidence, not a new fix or resolution of issue #73.
+
+- Correct the Return to Game Mode help text: Frame Control selects the switch
+  supported by the headset's SteamOS build, including `steamosctl` on current
+  Frames. The button's behavior is unchanged.
+
+- 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.

CONTRIBUTING.md

@@ -0,0 +1,71 @@
+# Contributing to Frame Control
+
+This guide exists to save both sides time. The process is borrowed from
+[pi](https://github.com/badlogic/pi-mono/blob/main/CONTRIBUTING.md).
+
+## Just want to report something?
+
+Use the [feedback form](https://frame-control.pages.dev/feedback/). It needs no
+GitHub account, and what you send becomes an issue here that stays open.
+
+## The One Rule
+
+**You must understand your code.** If you can't explain what your change does
+and how it interacts with the rest of the app, your PR will be closed.
+
+Using AI to write code is fine. Submitting AI-generated slop you don't
+understand is not.
+
+## Contribution gate
+
+Issues and PRs opened on GitHub by new contributors are auto-closed by default.
+A maintainer reviews auto-closed issues regularly and reopens worthwhile ones.
+Issues that don't meet the quality bar below won't be reopened or get a reply.
+
+Approval happens through maintainer replies on issues:
+
+- `lgtmi`: your future issues won't be auto-closed
+- `lgtm`: your future issues and PRs won't be auto-closed
+
+The word must be at the start of the reply (optionally after one or more
+`@username` mentions) or at the end. Only `lgtm` lets you open PRs. Approved
+people are listed in [`.github/APPROVED_CONTRIBUTORS`](.github/APPROVED_CONTRIBUTORS).
+
+## Quality bar for issues
+
+Use one of the issue templates, and keep it short, concrete and worth reading.
+
+- If it doesn't fit on one screen, it's too long.
+- Write in your own voice. If you must use an LLM, say so in a clearly labelled
+  follow-up comment.
+- State the bug or request clearly, and why it matters.
+- For bugs, include your OS, your SteamOS build (Steam Settings → System), and
+  the server log (**Frame → Show Server Log** in the app).
+- If you want to implement the change yourself, say so.
+
+## Before opening a PR
+
+Don't open a PR until a maintainer has approved you with `lgtm`. Open an
+[idea or contribution proposal](https://github.com/saphid/frame-control/issues/new?template=idea.yml)
+first.
+
+Then check your change:
+
+```sh
+python3 -m unittest discover -s tests   # server tests; no headset needed
+node --test site/test/*.test.mjs        # website feedback function
+```
+
+Say what you tested, and whether you tried it on a real Steam Frame.
+
+## Blocking
+
+If you ignore this document twice, or spam the tracker with agent-generated
+issues, your GitHub account will be blocked from the repo.
+
+## Why auto-close?
+
+This is a hobby project with one maintainer. Auto-closing is a buffer against
+burnout and tracker spam: issues get reviewed on the maintainer's schedule, and
+the good ones are reopened. Short, concrete, reproducible reports and thoughtful
+contributions are welcome.

README.md

@@ -7,19 +7,19 @@
 **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)
 
-[**Download**](#install) · [Trailer](#trailer) · [Features](#features) · [Set up the headset](#set-up-the-headset) · [Feedback](#feedback) · [Docs](#going-further)
+[**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)
 
 <br>
 
-<img src="docs/img/frame-control.png" alt="Frame Control showing the headset view, battery and status, and the Steam library" width="900">
+<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>
 
@@ -35,8 +35,8 @@ See what the headset sees, install games and Android apps, move files and text a
 <tr>
 <td width="50%" valign="top">
 
-**👓 Headset view**<br>
-Live video of what the lenses show (about 30 fps), or a still of both eyes. Zoom, pan, full screen, save as PNG.
+**👓 Headset view and Desktop**<br>
+Live video of what the lenses show, or of the app panel in use, flat and still however the wearer looks around. Turn on Control and tap or click right on it to use the Frame from your phone or computer.
 
 </td>
 <td width="50%" valign="top">
@@ -44,13 +44,16 @@ Live video of what the lenses show (about 30 fps), or a still of both eyes. Zoom
 **🔋 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">
@@ -63,14 +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 headset from your computer or phone, through Valve's own input path, with nothing to install. Accents and emoji use KDE Connect, which Frame Control brings along and sets up the first time you type one. Copy text to the headset's clipboard and back again. Press T to open it.
 
 </td>
 </tr>
@@ -86,24 +92,58 @@ 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>
 
-Nothing is installed on the Frame for any of this: the app uses what SteamOS
+The optional [Family and comfort](docs/family-comfort.md) card adds session
+limits, breaks, local alerts and one-click casting. A session copies a small
+Frame Control worker into your headset user account.
+
+For the other features, nothing is installed on the Frame: the app uses what SteamOS
 already ships (sideloading a game copies Valve's own devkit scripts to
-`~/devkit-utils`, as Valve's Devkit Client does). [How each feature works](docs/frame-control.md).
+`~/devkit-utils`, as Valve's Devkit Client does). The optional
+[performance HUD](docs/vr-utilities.md) copies our own Python helpers into
+`~/.local/share/frame-control/vr/`. [How each feature works](docs/frame-control.md).
 
 ## 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`) |
 
-The app brings its own Python and `adb`; SSH is built into macOS and Windows.
+**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.
+
+**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
+[docs/privacy.md](docs/privacy.md).
 Google doesn't publish `adb` for arm64 Linux, so that build uses your
 distribution's. If you already have `adb`, the app uses yours.
 
@@ -112,7 +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"
@@ -141,26 +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
@@ -172,13 +230,19 @@ entry to `~/.ssh/config` and keys at `~/.ssh/id_ed25519_frame` and
 ## Feedback
 
 This is a first public test, so reports are really useful, especially from
-Windows and Linux. Please [open an issue](https://github.com/saphid/steam-frame/issues/new)
-with:
+Windows and Linux. The quickest way is **Report a problem** in the app (the
+speech-bubble button at the top, or **Help → Report a Problem…**). It adds
+diagnostics with personal details removed, shows you exactly what's included,
+and sends it privately to the maintainer; nothing is published. Without the app,
+use the [feedback form](https://frame-control.pages.dev/feedback/). Please include:
 
 - what you tried and what happened
 - your computer's OS and your SteamOS build (Steam Settings → System)
 - the server log: **Frame → Show Server Log** in the app
 
+Issues and PRs opened directly on GitHub by new contributors are auto-closed
+until a maintainer approves them; see [CONTRIBUTING.md](CONTRIBUTING.md).
+
 ## Going further
 
 This repo also holds the scripts behind the app and field notes on how the
@@ -191,10 +255,20 @@ Frame's software fits together, all checked against a real headset and labelled
 | [Scripts and headset setup](docs/scripts.md) | The command-line helpers, minimum typing, streaming options, floating panels |
 | [How the Frame works](docs/how-the-frame-works.md) | SteamVR → gamescope → Plasma, verified facts, debugging |
 | [Android apps (Lepton)](docs/apks.md) | Sideloading, the rated F-Droid catalogue, per-app instances |
+| [Import from my Quest](docs/quest-import.md) | Copy games you own off your Quest by USB; what runs, and why licence-checked games may not |
+| [My Meta library](docs/meta-library.md) | Experimental: install and test Quest games your Meta account owns, with your own token |
 | [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 |
-| [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 |
+| [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 |
 
 <details>
@@ -209,8 +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
@@ -221,14 +295,20 @@ Frame's software fits together, all checked against a real headset and labelled
 
 ```sh
 python3 -m unittest discover -s tests   # server tests; no headset needed
+scripts/e2e.sh                          # end-to-end against a fake Frame (Linux with Docker)
 cd app && npm install && npm start      # run the app from the checkout
 ```
 
 The server is Python stdlib only; the app is Electron. GitHub Actions runs the
 tests on macOS, Windows and Linux, and a `v*` tag builds all three installers
-into the release. See [building](docs/frame-control.md#building).
+into a draft release, which reaches users once published. See
+[building](docs/frame-control.md#building) and [releasing](docs/releasing.md).
 
 ## License
 
-[MIT](LICENSE). Steam, Steam Frame and SteamVR are trademarks of Valve
+[MIT](LICENSE). The apps also ship other people's software under its own
+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

@@ -0,0 +1,17 @@
+# Third-party software in Frame Control
+
+Frame Control's own code is under the [MIT licence](LICENSE). The apps also
+ship other people's software, unchanged, each under its own licence:
+
+| What | Where | Licence | Details |
+|---|---|---|---|
+| KDE Connect 24.02.2 and five libraries, as Valve builds them for the Frame | Desktop apps and the iPhone app; copied to the Frame for the keyboard and trackpad | GPL and LGPL (per package) | [frame/kdeconnect/NOTICE.md](frame/kdeconnect/NOTICE.md), licence texts in [frame/kdeconnect/LICENSES](frame/kdeconnect/LICENSES), complete source in the [kdeconnect-frame-24.02.2-1 release](https://github.com/saphid/frame-control/releases/tag/kdeconnect-frame-24.02.2-1) |
+| Python 3.12 ([python-build-standalone](https://github.com/astral-sh/python-build-standalone)) | Desktop apps | PSF License and others | Included with it, in the app's `python` folder |
+| 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. On Windows, Frame Control's own
+`pc-host.dll` links to GStreamer dynamically; the libraries are unmodified.

apk-catalog/reports.py

@@ -6,11 +6,25 @@ A report: package, version, result (runs | crashes | install_failed |
 instance_failed, from an automated test), rating (works | issues | broken, from
 a person), notes, via (harness | probe | user), date, steamos, lepton, runtime.
 Newest wins, and a person's rating beats an automated result.
+
+An install_failed report saying the file had no arm64-v8a build (or needed a
+newer Android) is about that one APK file, often the wrong per-ABI download of
+an app that has an arm64 build, so it says nothing about the app and is left out.
 """
+import re
+
+FILE_FAULT = re.compile(r'no arm64-v8a build|needs Android API')
+
+
+def about_app(r):
+    """False for reports about one wrong APK file rather than the app itself."""
+    return not (r.get('result') == 'install_failed' and not r.get('rating')
+                and FILE_FAULT.search(r.get('notes') or ''))
 
 
 def verdict(reports):
     """(verdict, summary lines) for one package's reports, or None."""
+    reports = [r for r in reports or () if about_app(r)]
     if not reports:
         return None
     rs = sorted(reports, key=lambda r: r.get('date') or '')

app/build/check-resources.js

@@ -0,0 +1,83 @@
+// Checks that the app's resources hold what Frame Control can't work without.
+// The OpenXR compatibility layer is why this exists: VR APK installs need its
+// arm64-v8a library (ui/frame_android.py XR_COMPAT_FILES).
+//
+// As electron-builder's afterPack hook it checks the unpacked app. From the
+// command line it checks an installed copy, which is what caught the Windows
+// installer silently dropping the library (see .github/workflows/release.yml):
+//   node build/check-resources.js INSTALLED_RESOURCES [REFERENCE_RESOURCES]
+// With a reference (the unpacked build's resources), every file in it must also
+// be in the installed copy, at the same size.
+const fs = require("fs");
+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",
+  "frame/openxr-compat/prebuilt/arm64-v8a/libXrApiLayer_FRAME_compat.so.gz",
+];
+
+function resourcesDir(context) {
+  if (context.electronPlatformName === "darwin" || context.electronPlatformName === "mas") {
+    const app = `${context.packager.appInfo.productFilename}.app`;
+    return path.join(context.appOutDir, app, "Contents", "Resources");
+  }
+  return path.join(context.appOutDir, "resources");
+}
+
+function size(file) {
+  try {
+    return fs.statSync(file).size;
+  } catch {
+    return -1;
+  }
+}
+
+// Required files that are missing or empty.
+function missing(dir) {
+  return REQUIRED.filter((rel) => size(path.join(dir, rel)) <= 0);
+}
+
+// Files under reference that aren't in dir at the same size.
+function differences(dir, reference) {
+  const out = [];
+  (function walk(rel) {
+    for (const e of fs.readdirSync(path.join(reference, rel), { withFileTypes: true })) {
+      const r = path.join(rel, e.name);
+      if (e.isDirectory()) walk(r);
+      else if (e.isFile() && size(path.join(dir, r)) !== size(path.join(reference, r))) out.push(r.split(path.sep).join("/"));
+    }
+  })("");
+  return out;
+}
+
+exports.default = async function afterPack(context) {
+  const dir = resourcesDir(context);
+  const gone = missing(dir);
+  if (gone.length) {
+    throw new Error(`packaged app is missing required resources in ${dir}: ${gone.join(", ")}`);
+  }
+};
+exports.missing = missing;
+exports.differences = differences;
+exports.REQUIRED = REQUIRED;
+
+if (require.main === module) {
+  const [dir, reference] = process.argv.slice(2);
+  if (!dir) {
+    console.error("usage: node build/check-resources.js INSTALLED_RESOURCES [REFERENCE_RESOURCES]");
+    process.exit(2);
+  }
+  const problems = [...missing(dir), ...(reference ? differences(dir, reference) : [])];
+  if (problems.length) {
+    console.error(`${dir} is missing or has the wrong size for:\n  ${[...new Set(problems)].join("\n  ")}`);
+    process.exit(1);
+  }
+  console.log(`${dir}: all required resources present${reference ? ", and every file of " + reference : ""}`);
+}

app/build/fetch-deps.js

@@ -1,7 +1,9 @@
 // Downloads what the app bundles so users install nothing else: a standalone
 // Python (python-build-standalone), adb (Android platform-tools) and a CA
 // bundle. Each goes in build/deps/<os>-<arch>/{python,tools}, which package.json
-// copies into the app's resources. Everything is pinned by version and SHA-256.
+// copies into the app's resources. Also KDE Connect for the Frame (the same arm64
+// packages for every build), into ../frame/kdeconnect/packages as listed in
+// ../frame/kdeconnect/packages.json. Everything is pinned by version and SHA-256.
 //   node build/fetch-deps.js mac arm64 | win x64 | linux x64 arm64
 const crypto = require("crypto");
 const fs = require("fs");
@@ -127,8 +129,26 @@ async function fetch(os, arch) {
   console.log(`${key}: ${version} -> ${out}`);
 }
 
+// As frame/kdeconnect/fetch.py does for the iPhone app's bundle.
+async function fetchKdeConnect() {
+  const dir = path.join(__dirname, "..", "..", "frame", "kdeconnect");
+  const manifest = JSON.parse(fs.readFileSync(path.join(dir, "packages.json"), "utf8"));
+  const out = path.join(dir, "packages");
+  fs.mkdirSync(out, { recursive: true });
+  const sha = (file) => crypto.createHash("sha256").update(fs.readFileSync(file)).digest("hex");
+  for (const p of manifest.packages) {
+    const file = path.join(out, p.file);
+    if (fs.existsSync(file) && sha(file) === p.sha256) continue;
+    await download(manifest.release + p.file, p.sha256, file);
+  }
+  const wanted = new Set(manifest.packages.map((p) => p.file));
+  for (const f of fs.readdirSync(out)) if (!wanted.has(f)) fs.rmSync(path.join(out, f), { recursive: true, force: true });
+  console.log(`KDE Connect for the Frame: ${manifest.packages.length} packages -> ${out}`);
+}
+
 (async () => {
   const [os, ...archs] = process.argv.slice(2);
   if (!os || !archs.length) throw new Error("usage: node build/fetch-deps.js <mac|win|linux> <arch>...");
   for (const arch of archs) await fetch(os, arch);
+  await fetchKdeConnect();
 })().catch((e) => { console.error(e.message); process.exit(1); });

app/main.js

@@ -1,7 +1,7 @@
 // Frame Control as a desktop app (macOS, Windows, Linux): starts ui/server.py on
 // a free loopback port and shows it in a native window. The server does all the
 // work over the `frame` SSH alias; this file only hosts it.
-const { app, BrowserWindow, Menu, clipboard, dialog, ipcMain, shell } = require("electron");
+const { app, BrowserWindow, Menu, Notification, clipboard, dialog, ipcMain, nativeImage, session, shell } = require("electron");
 const { execFile, spawn } = require("child_process");
 const { promisify } = require("util");
 const fs = require("fs");
@@ -10,6 +10,9 @@ const net = require("net");
 const os = require("os");
 const path = require("path");
 const { SCHEME, parseInstallLink, linkFromArgv } = require("./install-link");
+const updater = require("./updater");
+const { preferenceStore } = require("./preferences");
+const { createMetaSignIn } = require("./meta-signin");
 
 const run = promisify(execFile);
 
@@ -26,6 +29,7 @@ const LOG_DIR = IS_MAC ? path.join(os.homedir(), "Library", "Logs", "Frame Contr
 const LOG = path.join(LOG_DIR, "server.log");
 const BG = "#0d1117";
 const FRAME = process.env.FRAME_ALIAS || "frame";
+const preferences = preferenceStore(path.join(app.getPath("userData"), "client-preferences.json"));
 
 let server = null;
 let url = null;
@@ -114,7 +118,12 @@ function ping(target) {
 }
 
 async function startServer() {
+  // The version, the time zone and whether this is a built app go to ui/frame_telemetry.py,
+  // which sends nothing from a source checkout.
   const env = { ...process.env, PATH: await loginPath(), FRAME_CONTROL_APP: "1",
+                FRAME_CONTROL_VERSION: app.getVersion(), FRAME_CONTROL_LOG: LOG,
+                FRAME_CONTROL_TIMEZONE: Intl.DateTimeFormat().resolvedOptions().timeZone || "",
+                ...(app.isPackaged ? { FRAME_CONTROL_PACKAGED: "1" } : {}),
                 ...(fs.existsSync(TOOLS) ? { FRAME_CONTROL_TOOLS: TOOLS } : {}) };
   python = await findPython(env);
   if (!python) throw new Error(`Frame Control needs Python 3.8 or later. ${PYTHON_HELP}`);
@@ -144,7 +153,7 @@ async function startServer() {
   const target = `http://127.0.0.1:${port}/`;
   for (let i = 0; i < 100; i++) {
     if (exited !== null) throw new Error(`The server exited (${exited}). See ${LOG}.`);
-    if (await ping(target)) { url = target; return; }
+    if (await ping(target)) { url = target; serverStarted = Date.now(); return; }
     await new Promise((r) => setTimeout(r, 100));
   }
   if (server === child) server = null;
@@ -154,51 +163,76 @@ async function startServer() {
 
 // Closing stdin lets server.py close its SSH connections and exit (the only clean
 // way on Windows); SIGTERM does the same elsewhere.
+// Resolves once it has exited (or after 20 s), so a replacement can take the server
+// lock: server.py allows one per user.
 function endServer(child) {
+  const gone = child.exitCode !== null || child.signalCode !== null ? Promise.resolve()
+    : new Promise((resolve) => child.once("exit", resolve));
   try { child.stdin.end(); } catch {}
   if (!IS_WIN) child.kill("SIGTERM");
-  setTimeout(() => { if (child.exitCode === null && child.signalCode === null) child.kill(); }, 5000).unref();
+  // server.py ignores a second SIGTERM while it shuts down, so the fallback is a hard kill.
+  setTimeout(() => { if (child.exitCode === null && child.signalCode === null) child.kill("SIGKILL"); }, 12000).unref();
+  return Promise.race([gone, new Promise((resolve) => setTimeout(resolve, 20000).unref())]);
 }
 
 function stopServer() {
   if (server) endServer(server);
 }
 
-function errorPage(message) {
+function errorPage(message, title = "Frame Control couldn't start") {
   const esc = (s) => s.replace(/[&<>]/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;" }[c]));
   const html = `<!doctype html><meta charset="utf-8"><body style="margin:0;height:100vh;display:grid;
     place-items:center;background:${BG};color:#e6edf3;font:14px -apple-system,sans-serif">
-    <div style="max-width:560px;padding:32px;line-height:1.5"><h2>Frame Control couldn't start</h2>
-    <p>${esc(message)}</p><p style="color:#8b98a8">Fix it, then choose Frame → Restart Server.</p></div>`;
+    <div style="max-width:560px;padding:32px;line-height:1.5"><h2>${esc(title)}</h2>
+    <p>${esc(message)}</p>
+    <p><button onclick="this.disabled = true; frameApp.restartServer()" style="font:inherit;padding:6px 16px;
+      border-radius:6px;border:1px solid #30363d;background:#21262d;color:inherit;cursor:pointer">Try Again</button></p>
+    <p style="color:#8b98a8">Frame → Restart Server does the same.</p></div>`;
   return "data:text/html;charset=utf-8," + encodeURIComponent(html);
 }
 
+// A server that had been running starts again by itself (something stopped it: a
+// signal, a crash). One that stops again within a minute shows the error instead,
+// so a server that can't stay up doesn't restart forever.
+let serverStarted = 0;
 function serverDied(why) {
   url = null;
-  if (win) win.loadURL(errorPage(`The server stopped unexpectedly (${why}). See ${LOG}.`));
+  if (!win) return;
+  if (Date.now() - serverStarted > 60000) restartServer();
+  else win.loadURL(errorPage(`Its server stopped unexpectedly (${why}). See ${LOG}.`, "Frame Control stopped"));
 }
 
-async function restartServer() {
-  const old = server;
-  server = null;
-  url = null;
-  if (old) endServer(old);
-  await load();
+// Restarts that overlap share one: two could each start a server, and the one
+// that lost the lock would leave the app pointing at nothing.
+let restarting = null;
+function restartServer() {
+  if (!restarting) {
+    restarting = (async () => {
+      const old = server;
+      server = null;
+      url = null;
+      if (old) await endServer(old);
+      if (starting) await starting.catch(() => {});  // a start it cut short: then start afresh
+      await load();
+    })().finally(() => { restarting = null; });
+  }
+  return restarting;
 }
 
 // On macOS the page's sticky header becomes the title bar, clear of the traffic lights.
 const CHROME_CSS = IS_MAC && `
   header { padding-left: 92px !important; -webkit-app-region: drag; user-select: none; }
-  header a, header button, header input, header .chip { -webkit-app-region: no-drag; }
+  header a, header button, header input, header select, header .chip { -webkit-app-region: no-drag; }
 `;
 
 // Restart Server can start a new load while an older one is still waiting for
 // its server; only the newest load may touch the window.
 let loadGen = 0;
+let starting = null;  // loads that overlap share one server start
 async function load() {
   const gen = ++loadGen;
   try {
-    if (!url) await startServer();
+    if (!url) await (starting ||= startServer().finally(() => { starting = null; }));
     if (gen === loadGen && win) { await win.loadURL(url); firstRunCheck(); }
   } catch (e) {
     if (gen === loadGen && win) await win.loadURL(errorPage(e.message));
@@ -242,7 +276,129 @@ function fromUi(e) {
   } catch { return false; }
 }
 
+// The error page's Try Again button. The error page is the only data: page the window
+// shows (`url` can still be set then: the server answered but the page failed to load).
+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.
+ipcMain.handle("clipboard:writeImage", (e, bytes) => {
+  if (!fromUi(e) || !(bytes instanceof Uint8Array)) return false;
+  const img = nativeImage.createFromBuffer(Buffer.from(bytes));
+  if (img.isEmpty()) throw new Error("not an image");
+  clipboard.writeImage(img);
+  return true;
+});
+ipcMain.handle("connection:setup", (e) => { if (fromUi(e)) setUpConnection(); });
+ipcMain.on("keys:capture", (e, on) => { if (fromUi(e)) win.webContents.setIgnoreMenuShortcuts(on === true); });
+ipcMain.handle("update:get", (e) => fromUi(e) ? publicUpdate() : null);
+ipcMain.handle("update:check", (e) => fromUi(e) ? checkForUpdate({ manual: true }).then(publicUpdate) : null);
+ipcMain.handle("update:install", (e) => { if (fromUi(e)) installUpdate(); });
+
+// The page reports the headsets it knows (the server's Devices tab), so the Frame
+// menu can switch between them. Only plain names and ids go into the menu.
+const ALIAS_RE = /^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$/;
+let devices = [];
+ipcMain.on("devices:changed", (e, list) => {
+  if (!fromUi(e) || !Array.isArray(list)) return;
+  const next = list.slice(0, 20).filter(d => d && typeof d.id === "string" && ALIAS_RE.test(d.alias || ""))
+    .map(d => ({ id: d.id.slice(0, 80), name: String(d.name || d.alias).slice(0, 60), alias: d.alias, active: !!d.active }));
+  if (JSON.stringify(next) === JSON.stringify(devices)) return;
+  devices = next;
+  buildMenu();
+});
+const activeAlias = () => (devices.find(d => d.active) || {}).alias || FRAME;
+
+// SSH through the server, so it goes to the headset and address the app is using
+// (with its own pinned identity), and refuses when there's none.
+function openSsh() {
+  if (!url) return dialog.showErrorBox("Couldn't open SSH", "Frame Control's server isn't running.");
+  const body = JSON.stringify({ what: "terminal" });
+  const req = http.request(new URL("/api/open", url), {
+    method: "POST", timeout: 15000,
+    headers: { "Content-Type": "application/json", "X-Frame-UI": "1", "Content-Length": Buffer.byteLength(body) },
+  }, (res) => {
+    let data = "";
+    res.on("data", (c) => { data += c; });
+    res.on("end", () => {
+      if (res.statusCode === 200) return;
+      let why = `HTTP ${res.statusCode}`;
+      try { why = JSON.parse(data).error || why; } catch {}
+      dialog.showErrorBox("Couldn't open SSH", why);
+    });
+  });
+  req.on("error", (e) => dialog.showErrorBox("Couldn't open SSH", e.message));
+  req.on("timeout", () => req.destroy(new Error("the server didn't answer")));
+  req.end(body);
+}
+function showDevices() {
+  if (win && url) win.webContents.executeJavaScript('location.hash = "devices"').catch(() => {});
+}
+
+ipcMain.handle("comfort:notify", (e, message) => {
+  if (!fromUi(e) || typeof message !== "string" || message.length > 500) throw new Error("Invalid notification");
+  if (!Notification.isSupported()) throw new Error("System notifications are unavailable");
+  return new Promise((resolve, reject) => {
+    const notification = new Notification({title: "Frame Control", body: message});
+    const timer = setTimeout(() => reject(new Error("Notification delivery was not confirmed. Check system notification settings.")), 5000);
+    notification.once("show", () => { clearTimeout(timer); resolve(true); });
+    notification.once("failed", (_event, error) => {
+      clearTimeout(timer);
+      reject(new Error("Notification delivery failed. Check system notification settings: " + error));
+    });
+    notification.show();
+  });
+});
+
+// ---- Sign in with Meta (app/meta-signin.js, docs/meta-library.md) ----
+// The token goes from the sign-in window's own session straight to the server's
+// connect path; the page asks for it and only hears the server's answer.
+function postApi(apiPath, body) {
+  return new Promise((resolve, reject) => {
+    if (!url) return reject(new Error("Frame Control's server isn't running."));
+    const data = JSON.stringify(body);
+    const req = http.request(new URL(apiPath, url), {
+      method: "POST", timeout: 60000,
+      headers: { "Content-Type": "application/json", "X-Frame-UI": process.env.FRAME_UI_KEY || "1",
+                 "Content-Length": Buffer.byteLength(data) },
+    }, (res) => {
+      let text = "";
+      res.setEncoding("utf8");
+      res.on("data", (c) => { text += c; });
+      res.on("end", () => {
+        let parsed = {};
+        try { parsed = JSON.parse(text); } catch {}
+        resolve({ status: res.statusCode, data: parsed });
+      });
+    });
+    req.on("error", reject);
+    req.on("timeout", () => req.destroy(new Error("the server didn't answer")));
+    req.end(data);
+  });
+}
+
+let metaSignIn = null;
+const meta = () => (metaSignIn ||= createMetaSignIn({
+  BrowserWindow, session, shell, parent: () => win,
+  // The page only offers sign-in after its "I understand" box is ticked (checked again below).
+  connect: (token, attempt) => postApi("/api/meta", { action: "connect", token, acknowledged: true, attempt }),
+  cancel: (attempt) => postApi("/api/meta", { action: "cancel-signin", attempt }),
+}));
+ipcMain.handle("meta:signin", (e, acknowledged) => {
+  if (!fromUi(e)) return null;
+  if (acknowledged !== true) return { ok: false, error: "My Meta library is experimental: tick that you understand the warning first." };
+  return meta().signIn();
+});
+ipcMain.handle("meta:signout", (e) => fromUi(e) ? meta().signOut() : false);
 
 // frame-control://install links from websites (docs/web-install.md). They can
 // arrive before the window or server exists (macOS open-url on a cold launch),
@@ -275,6 +431,81 @@ ipcMain.on("install-link:ready", (e) => {
   deliverLinks();
 });
 
+// ---- updates (app/updater.js, docs/releasing.md) ----
+// Checked shortly after launch and every few hours; the page shows a banner and
+// the Update button calls installUpdate.
+const UPDATE_EVERY = 6 * 3600 * 1000;
+const update = { status: "idle", current: app.getVersion(), latest: null, error: null, progress: 0, how: null };
+
+function publicUpdate() {
+  const r = update.latest;
+  return { status: update.status, current: update.current, error: update.error, progress: update.progress,
+           latest: r && { version: r.version, notes: r.notes, page: r.page },
+           canInstall: !!update.how && update.how.method !== "manual", why: update.how && update.how.why };
+}
+
+function setUpdate(fields) {
+  Object.assign(update, fields);
+  if (win && linkPage === win.webContents) win.webContents.send("update:state", publicUpdate());
+}
+
+async function checkForUpdate({ manual = false } = {}) {
+  if (["checking", "downloading", "ready"].includes(update.status)) return;
+  setUpdate({ status: "checking", error: null });
+  try {
+    const latest = await updater.latestRelease();
+    const how = updater.updateMethod({ platform: process.platform, isPackaged: app.isPackaged,
+                                       execPath: process.execPath, env: process.env,
+                                       exists: fs.existsSync, writable: updater.writable });
+    if (updater.isNewer(latest.version, update.current)) {
+      setUpdate({ status: "available", latest, how });
+      if (manual) offerUpdateDialog();
+    } else {
+      setUpdate({ status: "none", latest, how });
+      if (manual) dialog.showMessageBox(win, { type: "info", message: "Frame Control is up to date",
+                                               detail: `You have ${update.current}, the newest version.` });
+    }
+  } catch (e) {
+    // A failed check: nothing to install, and never an older release kept from before.
+    setUpdate({ status: "check-failed", error: e.message, latest: null });
+    if (manual) dialog.showMessageBox(win, { type: "warning", message: "Couldn't check for updates", detail: e.message });
+  }
+}
+
+async function offerUpdateDialog() {
+  const r = update.latest;
+  const { response } = await dialog.showMessageBox(win, {
+    type: "info", message: `Frame Control ${r.version} is available`,
+    detail: `You have ${update.current}.` + (update.how.method === "manual" ? ` Download it from the release page (${update.how.why}).` : ""),
+    buttons: [update.how.method === "manual" ? "Open Release Page" : "Update and Restart", "Later"], defaultId: 0, cancelId: 1,
+  });
+  if (response === 0) installUpdate();
+}
+
+async function installUpdate() {
+  // "error" here only ever means an install failed, so trying again is safe.
+  if (update.status !== "available" && update.status !== "error") return;
+  if (!update.latest || !updater.isNewer(update.latest.version, update.current)) return;
+  if (!update.how || update.how.method === "manual") { shell.openExternal(update.latest.page); return; }
+  setUpdate({ status: "downloading", progress: 0, error: null });
+  try {
+    const start = await updater.prepare(update.latest, update.how,
+      (done, total) => { if (total) setUpdate({ progress: done / total }); }, update.current);
+    setUpdate({ status: "ready", progress: 1 });
+    start();
+    quitting = true;
+    app.quit();
+  } catch (e) {
+    setUpdate({ status: "error", error: e.message });
+  }
+}
+
+function scheduleUpdateChecks() {
+  if (process.env.FRAME_CONTROL_NO_UPDATE_CHECK === "1") return;
+  setTimeout(checkForUpdate, 8000);
+  setInterval(checkForUpdate, UPDATE_EVERY).unref();
+}
+
 function registerScheme() {
   // A checkout runs as `electron .`, so the OS must be told the script too.
   // (macOS takes the scheme from Info.plist, which only the built app has.)
@@ -291,7 +522,7 @@ function createWindow() {
     title: "Frame Control", backgroundColor: BG, show: false,
     ...(IS_MAC ? { titleBarStyle: "hiddenInset", trafficLightPosition: { x: 18, y: 26 } }
                : { icon: path.join(__dirname, "build", "icon.png") }),
-    webPreferences: { contextIsolation: true, nodeIntegration: false, sandbox: true,
+    webPreferences: { contextIsolation: true, nodeIntegration: false, sandbox: true, backgroundThrottling: false,
                       preload: path.join(__dirname, "preload.js") },
   });
   win.once("ready-to-show", () => win.show());
@@ -325,25 +556,37 @@ async function runInTerminal(argv) {
   }
 }
 
-async function setUpConnection() {
-  const alias = `FRAME_ALIAS=${FRAME}`;
+// Set Up Connection for the headset in use (or another alias, from the Devices tab).
+async function setUpConnection(name = activeAlias()) {
+  if (!ALIAS_RE.test(name)) return;
+  const alias = `FRAME_ALIAS=${name}`;
   if (IS_MAC) return runInTerminal(["env", alias, "zsh", path.join(SCRIPTS, "connect.sh")]);
   const py = python || await findPython({ ...process.env, PATH: await loginPath() });
-  const setup = [py || "python3", ...PY_FLAGS, path.join(ROOT, "ui", "frame_connect.py")];
-  // A new console inherits our environment on Windows; Linux terminals may not.
-  runInTerminal(IS_WIN ? setup : ["env", alias, ...setup]);
+  // --alias, since a new console on Windows (and some Linux terminals) doesn't get our environment.
+  runInTerminal([py || "python3", ...PY_FLAGS, path.join(ROOT, "ui", "frame_connect.py"), "--alias", name]);
 }
 
 function buildMenu() {
   const template = [
-    ...(IS_MAC ? [{ role: "appMenu" }] : []),
+    ...(IS_MAC ? [{ label: app.name, submenu: [
+      { role: "about" }, { label: "Check for Updates…", click: () => checkForUpdate({ manual: true }) },
+      { type: "separator" }, { role: "services" }, { type: "separator" },
+      { role: "hide" }, { role: "hideOthers" }, { role: "unhide" }, { type: "separator" }, { role: "quit" },
+    ] }] : []),
     { role: "fileMenu" },
     { role: "editMenu" },
     {
       label: "Frame",
       submenu: [
-        { label: "Set Up Connection…", click: setUpConnection },
-        { label: IS_MAC ? "Open SSH in Terminal" : "Open SSH in a Terminal", click: () => runInTerminal(["ssh", FRAME]) },
+        { label: "Set Up Connection…", click: () => setUpConnection() },
+        { label: IS_MAC ? "Open SSH in Terminal" : "Open SSH in a Terminal", click: openSsh },
+        { type: "separator" },
+        ...(devices.length > 1 ? [{
+          label: "Headset",
+          submenu: devices.map(d => ({ label: d.name, type: "radio", checked: d.active,
+                                       click: () => { if (win) win.webContents.send("use-device", d.id); } })),
+        }] : []),
+        { label: "Devices…", accelerator: "CmdOrCtrl+5", click: showDevices },
         { type: "separator" },
         { label: "Open in Browser", click: () => url && shell.openExternal(url) },
         { label: "Restart Server", click: () => win ? restartServer() : createWindow() },
@@ -363,7 +606,15 @@ function buildMenu() {
     ...(IS_MAC ? [{ role: "windowMenu" }] : []),
     {
       role: "help",
-      submenu: [{ label: "Project on GitHub", click: () => shell.openExternal("https://github.com/saphid/steam-frame") }],
+      submenu: [
+        ...(IS_MAC ? [] : [{ label: "Check for Updates…", click: () => checkForUpdate({ manual: true }) }]),
+        { label: "Report a Problem…", click: () => {
+          if (win && url && linkPage === win.webContents) win.webContents.send("report:open");
+          else shell.openExternal("https://frame-control.pages.dev/feedback/");  // the page isn't up
+        } },
+        { label: "Release Notes", click: () => shell.openExternal(updater.RELEASES) },
+        { label: "Project on GitHub", click: () => shell.openExternal("https://github.com/saphid/steam-frame") },
+      ],
     },
   ];
   Menu.setApplicationMenu(Menu.buildFromTemplate(template));
@@ -386,6 +637,7 @@ if (!app.requestSingleInstanceLock()) {
     registerScheme();
     buildMenu();
     createWindow();
+    scheduleUpdateChecks();
   });
   app.on("activate", () => { if (!win) createWindow(); });
   app.on("window-all-closed", () => app.quit());

app/meta-signin.js

@@ -0,0 +1,252 @@
+// "Sign in with Meta" for My Meta library (docs/meta-library.md), the way BSManager's
+// "Log in with Meta" works: Meta's own login page in a Frame Control window, then the
+// access token cookie (oc_ac_at) that page sets is handed to the local server's
+// existing connect path (format check, "who am I" with Meta, 0600 file).
+//
+// The window has its own persistent session (PARTITION), so the cookie is read only
+// from there: never from Frame Control's main window, never from any browser. It has
+// no preload and no Node, and it only navigates within Meta's login sites; anything
+// else opens in the system browser. Nothing here logs the token, and the page only
+// ever gets back the server's answer (connected, display name), never the token.
+// Electron is passed in, so app/test/meta-signin.test.js can run it with fakes.
+const crypto = require("crypto");
+
+const PARTITION = "persist:meta-signin";
+// BSManager's loginUrl (src/main/services/bs-version-download/bs-oculus-downloader.service.ts).
+const LOGIN_URL = "https://secure.oculus.com";
+const COOKIE = "oc_ac_at";
+// Sites the login can go through: the Oculus store web, Meta accounts, Facebook login,
+// and Instagram (Meta's login passes through www.instagram.com: seen live, 2026-10-14).
+const ALLOWED = ["oculus.com", "meta.com", "facebook.com", "instagram.com"];
+const TIMEOUT = 10 * 60 * 1000;  // as BSManager
+
+const underDomain = (host, domains) => {
+  host = String(host || "").replace(/^\./, "").toLowerCase();
+  return domains.some((d) => host === d || host.endsWith("." + d));
+};
+
+// Plain HTTPS on the default port, to one of the login sites.
+function allowedUrl(raw) {
+  let u;
+  try { u = new URL(String(raw)); } catch { return false; }
+  if (u.protocol !== "https:" || u.username || u.password || (u.port && u.port !== "443")) return false;
+  return underDomain(u.hostname, ALLOWED);
+}
+
+// Frames inside the page: any HTTPS address (Meta's login can embed captcha and CDN
+// frames from other sites), or an empty frame; never data:, blob:, javascript:, http:,
+// file: or any other scheme. Frames can't reach the cookie read or IPC (main process only).
+function allowedSubframeUrl(raw) {
+  if (/^about:(?:blank|srcdoc)$/.test(String(raw))) return true;
+  let u;
+  try { u = new URL(String(raw)); } catch { return false; }
+  return u.protocol === "https:" && !u.username && !u.password;
+}
+
+const onOculus = (raw) => { try { return underDomain(new URL(raw).hostname, ["oculus.com"]); } catch { return false; } };
+
+// A cheap first look, so a signed-out or app value is never sent anywhere; the server's
+// check_token (ui/frame_meta.py) has the final word.
+function looksLikeUserToken(v) {
+  return typeof v === "string" && /^(?:OC|FRL)[A-Za-z0-9+/=_-]{18,4093}$/.test(v)
+    && !/^OC\d{15}$/.test(v) && /[a-z]/.test(v);
+}
+
+const fingerprint = (v) => crypto.createHash("sha256").update(v).digest("hex");
+
+// Anything token-shaped out of a message, in case a server error ever carried one.
+function scrub(text, token) {
+  let s = String(text == null ? "" : text);
+  if (token) s = s.split(token).join("<redacted>");
+  return s.replace(/(?:OC|FRL)[A-Za-z0-9+/=_%|:-]{8,}/g, "<redacted>").slice(0, 600);
+}
+
+// deps: { BrowserWindow, session, shell, parent() -> BrowserWindow|null, timeout,
+//         connect(token, attempt) -> Promise<{status, data}>  (the server's connect action),
+//         cancel(attempt) -> Promise  (the server's cancel-signin: never save that attempt) }
+function createMetaSignIn({ BrowserWindow, session, shell, connect, cancel, parent = () => null, timeout = TIMEOUT }) {
+  let active = null;  // { win, promise, finish }
+  const pending = new Set();  // cancels still to reach the server, from flows already finished
+  let signingOut = null;      // the sign-out under way; no sign-in starts while it runs
+  const SIGNING_OUT = "Frame Control is signing out of Meta; try again in a moment.";
+
+  const openOutside = (target) => {
+    if (/^https?:\/\//i.test(String(target))) shell.openExternal(String(target));
+  };
+
+  function signIn() {
+    if (signingOut) return Promise.resolve({ ok: false, error: SIGNING_OUT });
+    if (active) { active.win.focus(); return active.promise; }
+    const ses = session.fromPartition(PARTITION);
+    ses.setPermissionRequestHandler((_wc, _permission, callback) => callback(false));
+    ses.setPermissionCheckHandler(() => false);
+    // Electron adds its own name and the app's to the user agent; send a plain Chrome one.
+    if (ses.getUserAgent && ses.setUserAgent) {
+      ses.setUserAgent(ses.getUserAgent().replace(/\s(?:Electron|frame-control|Frame Control)\/\S+/g, ""));
+    }
+    const p = parent();
+    const win = new BrowserWindow({
+      width: 520, height: 760, title: "Sign in with Meta – Frame Control", autoHideMenuBar: true,
+      ...(p ? { parent: p } : {}),
+      webPreferences: { partition: PARTITION, contextIsolation: true, nodeIntegration: false, sandbox: true,
+                        nodeIntegrationInSubFrames: false, webviewTag: false, safeDialogs: true, devTools: false },
+    });
+    const wc = win.webContents;
+
+    let resolve;
+    const promise = new Promise((r) => { resolve = r; });
+    let done = false, busy = false, again = false, lastError = null, blocked = null;
+    const tried = new Set();  // fingerprints of values already sent, so each goes once
+    // The server refuses to save a connect from an attempt this window gave up on.
+    const attemptId = crypto.randomUUID();
+
+    const onCookie = (_e, cookie, _cause, removed) => {
+      if (!removed && cookie && cookie.name === COOKIE && underDomain(cookie.domain, ["oculus.com"])) attempt();
+    };
+    const timer = setTimeout(() => finish({ ok: false, error: "Sign-in timed out after 10 minutes. Try again." }), timeout);
+    if (timer.unref) timer.unref();
+
+    // Stops cookie intake first, then the window (destroy: a page's beforeunload can't
+    // keep it open), and answers the page. Unless it connected, and if it sent a token, it
+    // then has the server drop this attempt: only once the connect under way has settled,
+    // so the server always sees the cancel after the connect (and deletes the token if
+    // that connect saved it). The returned promise settles when that is done.
+    let finished = null;
+    let inflight = null;  // the last connect sent
+    function finish(result) {
+      if (done) return finished || Promise.resolve();  // destroy() below re-enters through "closed"
+      done = true;
+      ses.cookies.removeListener("changed", onCookie);
+      clearTimeout(timer);
+      if (active && active.win === win) active = null;
+      if (!win.isDestroyed()) win.destroy();
+      resolve(result);
+      if (result.ok || !inflight) return (finished = Promise.resolve());  // nothing sent: nothing to cancel
+      finished = Promise.resolve(inflight).catch(() => {}).then(() => cancel(attemptId)).catch(() => {});
+      pending.add(finished);
+      finished.then(() => pending.delete(finished));
+      return finished;
+    }
+
+    async function attempt() {
+      if (done) return;
+      if (busy) { again = true; return; }
+      busy = true;
+      try {
+        do {
+          again = false;
+          // Only this window's own session, and only Meta's Oculus cookie.
+          const cookies = await ses.cookies.get({ name: COOKIE });
+          const c = cookies.find((k) => underDomain(k.domain, ["oculus.com"]) && looksLikeUserToken(k.value));
+          if (!c || done) continue;
+          const key = fingerprint(c.value);
+          if (tried.has(key)) continue;
+          tried.add(key);
+          let r;
+          try {
+            inflight = connect(c.value, attemptId);
+            r = await inflight;
+          } catch {
+            lastError = "Frame Control's local server didn't answer.";
+            continue;
+          }
+          if (done) return;
+          const d = (r && r.data) || {};
+          if (r && r.status === 200 && d.connected) {
+            finish({ ok: true, connected: true, user: d.user && d.user.name ? { name: scrub(d.user.name, c.value).slice(0, 80) } : null,
+                     message: scrub(d.message || "Connected your Meta account (Experimental)", c.value) });
+            return;
+          }
+          lastError = scrub(d.error || `HTTP ${r && r.status}`, c.value);
+        } while (again && !done);
+      } catch {
+        // The session went away (the window closed); nothing to do.
+      } finally {
+        busy = false;
+      }
+    }
+
+    // Navigation stays on Meta's login sites. A link elsewhere opens in the system
+    // browser; a redirect elsewhere is just stopped (it may carry sign-in data).
+    // Every frame: the window itself stays on the list; frames inside it may load any
+    // HTTPS page (captchas), and one going anywhere else is just stopped.
+    wc.on("will-navigate", (e, target) => { if (!allowedUrl(target)) { e.preventDefault(); openOutside(target); } });
+    // A stopped page change in the window itself says where it went (the host only), so
+    // closing the stuck window explains why instead of "closed before you signed in".
+    const stopped = (to) => {
+      let host = "";
+      try { host = new URL(String(to)).hostname; } catch { /* not an address */ }
+      blocked = `Meta's sign-in went to ${scrub(host || "an address", null).slice(0, 80)}, which Frame Control doesn't allow.`;
+    };
+    wc.on("will-frame-navigate", (e) => {
+      if (e.isMainFrame ? allowedUrl(e.url) : allowedSubframeUrl(e.url)) return;
+      e.preventDefault();
+      if (e.isMainFrame) stopped(e.url);
+    });
+    // Redirects fire for frames too: the same rule per frame (details on the event in
+    // current Electron, positional arguments in older ones; unknown counts as the window).
+    wc.on("will-redirect", (e, target, _inPlace, isMainFrame) => {
+      const to = e && e.url !== undefined ? e.url : target;
+      const main = e && e.isMainFrame !== undefined ? e.isMainFrame : isMainFrame !== false;
+      if (main ? allowedUrl(to) : allowedSubframeUrl(to)) return;
+      e.preventDefault();
+      if (main) stopped(to);
+    });
+    // A page's beforeunload never keeps the window open.
+    wc.on("will-prevent-unload", (e) => e.preventDefault());
+    wc.setWindowOpenHandler(({ url: target }) => {
+      if (allowedUrl(target)) wc.loadURL(target).catch(() => {});
+      else openOutside(target);
+      return { action: "deny" };
+    });
+    // Signed in: the cookie changes, or the window lands back on Meta's store site.
+    ses.cookies.on("changed", onCookie);
+    wc.on("did-navigate", (_e, target) => { blocked = null; if (onOculus(target)) attempt(); });  // it recovered
+    wc.on("did-navigate-in-page", (_e, target) => { if (onOculus(target)) attempt(); });
+    win.on("closed", () => finish({ ok: false, cancelled: true,
+      error: lastError ? `The sign-in window closed before Frame Control could connect. ${lastError}`
+           : blocked ? `The sign-in window was closed before you signed in. ${blocked}`
+                     : "The sign-in window was closed before you signed in." }));
+
+    active = { win, promise, finish };
+    wc.loadURL(LOGIN_URL).catch(() => {});
+    return promise;
+  }
+
+  // Signs out of Meta in Frame Control: stops any sign-in under way (and has the server
+// refuse to save it), destroys the window, then clears everything
+  // the sign-in session stored (cookies, storage, cache), so the next sign-in starts fresh.
+  // One at a time (a second call joins the first), and no sign-in can start meanwhile.
+  // It goes round until no window is open and no connect or cancel is left, so nothing
+  // started before it can set a token after it (or after the Disconnect that follows).
+  function signOut() {
+    if (!signingOut) {
+      signingOut = (async () => {
+        for (;;) {
+          if (active) {
+            const { win, finish } = active;
+            await finish({ ok: false, cancelled: true, error: "Signed out of Meta in Frame Control." });
+            // Clear only once nothing can write to the session again.
+            if (!win.isDestroyed()) throw new Error("The Sign in with Meta window didn't close; try again.");
+          } else if (pending.size) {
+            // A connect under way settles and is cancelled before the caller (Disconnect)
+            // deletes the account, so it can't be saved afterwards.
+            await Promise.all([...pending]);
+          } else {
+            break;
+          }
+        }
+        const ses = session.fromPartition(PARTITION);
+        await ses.clearStorageData();
+        await ses.clearCache();
+        if (ses.clearAuthCache) await ses.clearAuthCache();
+        return true;
+      })().finally(() => { signingOut = null; });
+    }
+    return signingOut;
+  }
+
+  return { signIn, signOut, isOpen: () => !!active, isSigningOut: () => !!signingOut };
+}
+
+module.exports = { createMetaSignIn, allowedUrl, allowedSubframeUrl, looksLikeUserToken, scrub, PARTITION, LOGIN_URL, COOKIE, ALLOWED };

app/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "frame-control",
-  "version": "0.3.1",
+  "version": "0.4.19",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "frame-control",
-      "version": "0.3.1",
+      "version": "0.4.19",
       "license": "MIT",
       "devDependencies": {
         "electron": "^44.4.5",

app/package.json

@@ -1,7 +1,7 @@
 {
   "name": "frame-control",
   "productName": "Frame Control",
-  "version": "0.3.1",
+  "version": "0.4.19",
   "description": "Desktop app for managing a Valve Steam Frame over SSH",
   "private": true,
   "main": "main.js",
@@ -9,8 +9,8 @@
   "scripts": {
     "start": "env -u ELECTRON_RUN_AS_NODE electron .",
     "icon": "env -u ELECTRON_RUN_AS_NODE electron build/make-icon.js",
-    "dist": "node build/fetch-deps.js mac arm64 && electron-builder --mac --arm64 --publish never",
-    "dist:dir": "node build/fetch-deps.js mac arm64 && electron-builder --mac --arm64 --dir",
+    "dist": "sh ../mac/frame-mac-view/build.sh && node build/fetch-deps.js mac arm64 && electron-builder --mac --arm64 --publish never",
+    "dist:dir": "sh ../mac/frame-mac-view/build.sh && node build/fetch-deps.js mac arm64 && electron-builder --mac --arm64 --dir",
     "dist:linux": "node build/fetch-deps.js linux x64 arm64 && electron-builder --linux --x64 --arm64 --publish never",
     "dist:win": "node build/fetch-deps.js win x64 && electron-builder --win --x64 --publish never"
   },
@@ -29,6 +29,7 @@
         ]
       }
     ],
+    "afterPack": "build/check-resources.js",
     "directories": {
       "output": "dist",
       "buildResources": "build"
@@ -37,6 +38,9 @@
       "main.js",
       "preload.js",
       "install-link.js",
+      "updater.js",
+      "preferences.js",
+      "meta-signin.js",
       "package.json",
       "build/icon.png"
     ],
@@ -46,14 +50,27 @@
         "to": "ui",
         "filter": [
           "*.py",
-          "*.html"
+          "*.html",
+          "*.js",
+          "*.css",
+          "telemetry.json"
+        ]
+      },
+      {
+        "from": "../ui/apk_sources",
+        "to": "ui/apk_sources",
+        "filter": [
+          "*.py",
+          "*.json"
         ]
       },
       {
         "from": "../scripts",
         "to": "scripts",
         "filter": [
-          "*.sh"
+          "*.sh",
+          "frame_power_sample.py",
+          "frame_power_report.py"
         ]
       },
       {
@@ -61,7 +78,16 @@
         "to": "frame/android",
         "filter": [
           "*.sh",
-          "*.py"
+          "*.py",
+          "*.js"
+        ]
+      },
+      {
+        "from": "../frame/openxr-compat",
+        "to": "frame/openxr-compat",
+        "filter": [
+          "XrApiLayer_FRAME_compat.json",
+          "prebuilt/**/*.so.gz"
         ]
       },
       {
@@ -72,6 +98,16 @@
           "!**/__pycache__/**"
         ]
       },
+      {
+        "from": "../frame/kdeconnect",
+        "to": "frame/kdeconnect",
+        "filter": [
+          "packages.json",
+          "NOTICE.md",
+          "LICENSES/**/*",
+          "packages/*.pkg.tar.zst"
+        ]
+      },
       {
         "from": "../apk-catalog",
         "to": "apk-catalog",
@@ -94,6 +130,14 @@
         "filter": [
           "**/*"
         ]
+      },
+      {
+        "from": "../THIRD_PARTY_NOTICES.md",
+        "to": "THIRD_PARTY_NOTICES.md"
+      },
+      {
+        "from": "../LICENSE",
+        "to": "LICENSE"
       }
     ],
     "mac": {
@@ -105,9 +149,19 @@
         "dmg",
         "zip"
       ],
+      "extraResources": [
+        {
+          "from": "../mac/bin",
+          "to": "mac/bin",
+          "filter": [
+            "frame-mac-view"
+          ]
+        }
+      ],
       "extendInfo": {
         "NSAppleEventsUsageDescription": "Frame Control opens Terminal for SSH sessions and for power actions that need the Developer Mode password.",
-        "NSLocalNetworkUsageDescription": "Frame Control connects to your Steam Frame over SSH on the local network."
+        "NSLocalNetworkUsageDescription": "Frame Control connects to your Steam Frame over SSH on the local network.",
+        "NSScreenCaptureUsageDescription": "Frame Control shows your Mac's windows and screens inside the Steam Frame when you ask it to."
       },
       "artifactName": "Frame-Control-mac-${arch}.${ext}"
     },
@@ -146,7 +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

@@ -0,0 +1,27 @@
+// 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", "pcView"];
+const valid = value => value === "0" || value === "1";
+
+function preferenceStore(file) {
+  function read() {
+    try {
+      const saved = JSON.parse(fs.readFileSync(file, "utf8"));
+      if (!saved || typeof saved !== "object" || Array.isArray(saved)) return {};
+      return Object.fromEntries(KEYS.filter(key => valid(saved[key])).map(key => [key, saved[key]]));
+    } catch { return {}; }
+  }
+  function write(key, value) {
+    if (!KEYS.includes(key) || !valid(value)) throw new Error("Invalid preference");
+    const saved = { ...read(), [key]: value };
+    fs.mkdirSync(path.dirname(file), { recursive: true });
+    const tmp = file + ".tmp";
+    fs.writeFileSync(tmp, JSON.stringify(saved), { mode: 0o600 });
+    fs.renameSync(tmp, file);
+    return true;
+  }
+  return { read, write };
+}
+
+module.exports = { preferenceStore };

app/preload.js

@@ -1,14 +1,56 @@
-// 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
+// the headset can't be reached, and keeps the Frame menu's list of headsets up to date.
 // It also receives frame-control://install links (docs/web-install.md): only
 // what the link asked for, never an install; the page asks the user first.
+// And it passes update state both ways: see app/updater.js. It opens the Sign in
+// with Meta window and signs out of it (app/meta-signin.js).
 const { contextBridge, ipcRenderer, webUtils } = require("electron");
 
 contextBridge.exposeInMainWorld("frameApp", {
+  preferences: {
+    read: () => ipcRenderer.invoke("preferences:read"),
+    write: (key, value) => ipcRenderer.invoke("preferences:write", key, value),
+  },
+  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
+  // The Frame menu's headset switcher: the page tells it the headsets, and hears picks.
+  devicesChanged: (list) => ipcRenderer.send("devices:changed", list),
+  onUseDevice: (cb) => {
+    ipcRenderer.removeAllListeners("use-device");
+    ipcRenderer.on("use-device", (_e, id) => cb(String(id)));
+  },
+  // While the keyboard-and-trackpad panel holds the keyboard, ⌘W, ⌘R and the rest go to the Frame.
+  captureKeys: (on) => ipcRenderer.send("keys:capture", !!on),
   pathForFile: (file) => { try { return webUtils.getPathForFile(file) || ""; } catch { return ""; } },
+  // Updates (app/updater.js): the page shows a banner and an Update button.
+  update: {
+    get: () => ipcRenderer.invoke("update:get"),
+    check: () => ipcRenderer.invoke("update:check"),
+    install: () => ipcRenderer.invoke("update:install"),
+    onState: (cb) => {
+      ipcRenderer.removeAllListeners("update:state");
+      ipcRenderer.on("update:state", (_e, s) => cb(s));
+    },
+  },
+  // Help → Report a Problem… opens the page's report dialog (ui/frame_report.py).
+  onReportProblem: (cb) => {
+    ipcRenderer.removeAllListeners("report:open");
+    ipcRenderer.on("report:open", () => cb());
+  },
+  // Sign in with Meta (app/meta-signin.js): Meta's login page in its own window. The
+  // answer is the server's (connected, display name), never the token.
+  meta: {
+    signIn: (acknowledged) => ipcRenderer.invoke("meta:signin", acknowledged === true),
+    signOut: () => ipcRenderer.invoke("meta:signout"),
+  },
   onInstallLink: (cb) => {
     ipcRenderer.removeAllListeners("install-link");
     ipcRenderer.on("install-link", (_e, req) => cb({ kind: req.kind, target: req.target }));

app/test/meta-signin.test.js

@@ -0,0 +1,578 @@
+// Run: node --test app/test/
+// "Sign in with Meta" (app/meta-signin.js) with fake Electron windows, sessions and cookies.
+const nodeTest = require("node:test");
+// A broken flow can leave a sign-in waiting forever; fail it instead of hanging.
+const test = (name, fn) => nodeTest(name, { timeout: 5000 }, fn);
+const assert = require("node:assert");
+const { EventEmitter } = require("node:events");
+const { createMetaSignIn, allowedUrl, looksLikeUserToken, scrub, PARTITION, LOGIN_URL, COOKIE } = require("../meta-signin");
+
+const TOKEN = "OCAbcdefghijklmnopQRSTUVwxyz0123456789abcdEFGH";
+const OTHER = "OCzyxwvutsrqponmlkJIHGFEDcba9876543210zyxwVUTS";
+
+class FakeCookies extends EventEmitter {
+  constructor() { super(); this.store = []; this.reads = 0; }
+  async get(filter) {
+    this.reads++;
+    return this.store.filter((c) => !filter.name || c.name === filter.name);
+  }
+  set(cookie) {  // as the page would: store it, then tell listeners
+    this.store = this.store.filter((c) => !(c.name === cookie.name && c.domain === cookie.domain)).concat(cookie);
+    this.emit("changed", {}, cookie, "explicit", false);
+  }
+}
+
+class FakeSession {
+  constructor(name, log) { this.name = name; this.log = log; this.cookies = new FakeCookies(); this.cleared = []; this.permission = null; }
+  setPermissionRequestHandler(fn) { this.permission = fn; }
+  setPermissionCheckHandler(fn) { this.permissionCheck = fn; }
+  getUserAgent() { return "Mozilla/5.0 Chrome/140.0 frame-control/0.4.4 Electron/44.4.5 Safari/537.36"; }
+  setUserAgent(ua) { this.ua = ua; }
+  async clearStorageData(opts) { this.log.push("clear"); this.cleared.push(["storage", opts]); }
+  async clearCache() { this.cleared.push(["cache"]); }
+  async clearAuthCache() { this.cleared.push(["auth"]); }
+}
+
+function fakes({ timeout } = {}) {
+  const log = [];  // the order things happened in
+  const sessions = new Map();
+  const defaultSession = new FakeSession("default", log);
+  const session = {
+    defaultSession,
+    fromPartition(name) {
+      if (!sessions.has(name)) sessions.set(name, new FakeSession(name, log));
+      return sessions.get(name);
+    },
+  };
+  const windows = [];
+  class BrowserWindow extends EventEmitter {
+    constructor(opts) {
+      super();
+      this.opts = opts;
+      this.destroyed = false;
+      this.veto = false;  // a page whose beforeunload keeps the window open on close()
+      this.focused = 0;
+      const wc = new EventEmitter();
+      wc.loaded = [];
+      wc.loadURL = async (u) => { wc.loaded.push(u); };
+      wc.setWindowOpenHandler = (fn) => { wc.openHandler = fn; };
+      // Deliberately a different session: the code must read the partition's, not guess.
+      wc.session = defaultSession;
+      this.webContents = wc;
+      windows.push(this);
+    }
+    isDestroyed() { return this.destroyed; }
+    focus() { this.focused++; }
+    close() { if (this.destroyed || this.veto) return; this.destroy(); }
+    destroy() { if (this.destroyed) return; this.destroyed = true; log.push("destroyed"); this.emit("closed"); }
+  }
+  const opened = [];
+  const shell = { openExternal: (u) => { opened.push(u); } };
+  const calls = [], attempts = [], cancels = [];
+  let answer = () => ({ status: 200, data: { connected: true, user: { name: "Alex" }, message: "Connected your Meta account (Experimental)" } });
+  const connect = async (token, attempt) => { calls.push(token); attempts.push(attempt); log.push("connect"); return answer(token); };
+  const cancel = async (attempt) => {
+    cancels.push(attempt);
+    log.push(`cancel (cookie listeners: ${session.fromPartition(PARTITION).cookies.listenerCount("changed")})`);
+  };
+  const flow = createMetaSignIn({ BrowserWindow, session, shell, connect, cancel, parent: () => null, ...(timeout ? { timeout } : {}) });
+  return { flow, session, sessions, windows, opened, calls, attempts, cancels, log, setAnswer: (fn) => { answer = fn; },
+           meta: () => session.fromPartition(PARTITION) };
+}
+
+const tick = () => new Promise((r) => setImmediate(r));
+async function settle() { for (let i = 0; i < 10; i++) await tick(); }
+
+function navigate(wc, event, target) {
+  let prevented = false;
+  wc.emit(event, { preventDefault: () => { prevented = true; } }, target);
+  return prevented;
+}
+
+test("only plain HTTPS addresses on Meta's login sites are allowed", () => {
+  for (const ok of ["https://secure.oculus.com", "https://secure.oculus.com/my/profile", "https://auth.meta.com/login/",
+                    "https://www.meta.com/", "https://www.facebook.com/login.php", "https://oculus.com:443/",
+                    "https://www.instagram.com/accounts/login/"]) {
+    assert.ok(allowedUrl(ok), ok);
+  }
+  for (const bad of ["http://secure.oculus.com/", "https://oculus.com.evil.example/", "https://evil-oculus.com/",
+                     "https://notmeta.com/", "https://example.com/", "javascript:alert(1)", "file:///etc/passwd",
+                     "https://secure.oculus.com:8443/", "https://user:pw@secure.oculus.com/", "https://evil.example/?u=https://www.meta.com",
+                     "data:text/html,hi", "not a url"]) {
+    assert.ok(!allowedUrl(bad), bad);
+  }
+});
+
+test("the window is isolated: its own partition, no preload, no Node, sandboxed, on Meta's login page", async () => {
+  const f = fakes();
+  f.flow.signIn();
+  const [w] = f.windows;
+  const wp = w.opts.webPreferences;
+  assert.strictEqual(wp.partition, PARTITION);
+  assert.strictEqual(PARTITION, "persist:meta-signin");
+  assert.strictEqual(wp.contextIsolation, true);
+  assert.strictEqual(wp.nodeIntegration, false);
+  assert.strictEqual(wp.sandbox, true);
+  assert.strictEqual(wp.preload, undefined);
+  assert.strictEqual(wp.devTools, false);
+  assert.deepStrictEqual(w.webContents.loaded, [LOGIN_URL]);
+  assert.strictEqual(LOGIN_URL, "https://secure.oculus.com");
+  // Permission prompts (camera, notifications...) are refused.
+  let granted = null;
+  f.meta().permission(null, "media", (v) => { granted = v; });
+  assert.strictEqual(granted, false);
+  assert.strictEqual(f.meta().permissionCheck(null, "notifications", "https://secure.oculus.com"), false);
+  assert.ok(!/Electron|frame-control/.test(f.meta().ua));
+  w.close();
+});
+
+test("navigation stays on Meta's sites; other links open in the system browser", async () => {
+  const f = fakes();
+  f.flow.signIn();
+  const wc = f.windows[0].webContents;
+  assert.strictEqual(navigate(wc, "will-navigate", "https://auth.meta.com/login/"), false);
+  assert.strictEqual(navigate(wc, "will-navigate", "https://www.facebook.com/login.php"), false);
+  assert.strictEqual(navigate(wc, "will-navigate", "https://example.com/help"), true);
+  assert.deepStrictEqual(f.opened, ["https://example.com/help"]);
+  // A redirect elsewhere is stopped and not opened anywhere (it may carry sign-in data).
+  assert.strictEqual(navigate(wc, "will-redirect", "https://evil.example/cb?x=1"), true);
+  assert.strictEqual(navigate(wc, "will-redirect", "https://auth.meta.com/next"), false);
+  assert.deepStrictEqual(f.opened, ["https://example.com/help"]);
+  // New windows: never created. Meta's own load in this window; others go outside; non-web schemes nowhere.
+  assert.deepStrictEqual(wc.openHandler({ url: "https://www.meta.com/legal/terms/" }), { action: "deny" });
+  assert.deepStrictEqual(wc.openHandler({ url: "https://example.org/" }), { action: "deny" });
+  assert.deepStrictEqual(wc.openHandler({ url: "file:///etc/passwd" }), { action: "deny" });
+  await settle();
+  assert.deepStrictEqual(wc.loaded, [LOGIN_URL, "https://www.meta.com/legal/terms/"]);
+  assert.deepStrictEqual(f.opened, ["https://example.com/help", "https://example.org/"]);
+  f.windows[0].close();
+});
+
+test("the cookie is read only from the sign-in partition, only for Meta's Oculus domain", async () => {
+  const f = fakes();
+  // The same cookie elsewhere: the default session and another partition. Never read.
+  f.session.defaultSession.cookies.store.push({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  f.session.fromPartition("persist:other").cookies.store.push({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  const done = f.flow.signIn();
+  const w = f.windows[0];
+  // A cookie with the right name on another site, and a signed-out value: ignored.
+  f.meta().cookies.set({ name: COOKIE, domain: ".evil.example", value: OTHER });
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: "OC123456789012345" });
+  w.webContents.emit("did-navigate", {}, "https://secure.oculus.com/my/profile");
+  await settle();
+  assert.deepStrictEqual(f.calls, []);
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  const r = await done;
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+  assert.strictEqual(r.ok, true);
+  assert.strictEqual(f.session.defaultSession.cookies.reads, 0);
+  assert.strictEqual(f.session.fromPartition("persist:other").cookies.reads, 0);
+  assert.ok(f.sessions.get(PARTITION).cookies.reads > 0);
+});
+
+test("landing on the logged-in page picks up a cookie set earlier", async () => {
+  const f = fakes();
+  const done = f.flow.signIn();
+  f.meta().cookies.store.push({ name: COOKIE, domain: "secure.oculus.com", value: TOKEN });  // no change event
+  f.windows[0].webContents.emit("did-navigate", {}, "https://auth.meta.com/login/");  // not Meta's store site yet
+  await settle();
+  assert.deepStrictEqual(f.calls, []);
+  f.windows[0].webContents.emit("did-navigate", {}, "https://secure.oculus.com/my/profile");
+  assert.strictEqual((await done).ok, true);
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+});
+
+test("after a connect the window closes, and the page gets the answer, never the token", async () => {
+  const f = fakes();
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  const r = await done;
+  assert.ok(f.windows[0].isDestroyed());
+  assert.ok(!f.flow.isOpen());
+  assert.deepStrictEqual(r, { ok: true, connected: true, user: { name: "Alex" }, message: "Connected your Meta account (Experimental)" });
+  assert.ok(!JSON.stringify(r).includes(TOKEN));
+  // The cookie listener is gone: a later change sends nothing.
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  await settle();
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+});
+
+test("a token the server refuses keeps the window open, is sent once, and the next one connects", async () => {
+  const f = fakes();
+  f.setAnswer((t) => t === TOKEN ? { status: 400, data: { error: "Meta didn't accept this token." } }
+                                 : { status: 200, data: { connected: true, user: null } });
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.windows[0].webContents.emit("did-navigate", {}, "https://secure.oculus.com/my/profile");  // same value again
+  await settle();
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+  assert.ok(!f.windows[0].isDestroyed());
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  const r = await done;
+  assert.deepStrictEqual(f.calls, [TOKEN, OTHER]);
+  assert.strictEqual(r.ok, true);
+  assert.strictEqual(r.user, null);
+});
+
+test("the token is never logged, and an error that echoed it is scrubbed", async () => {
+  const seen = [];
+  const names = ["log", "info", "warn", "error", "debug", "trace"];
+  const saved = Object.fromEntries(names.map((n) => [n, console[n]]));
+  const writes = [process.stdout.write, process.stderr.write];
+  for (const n of names) console[n] = (...a) => { seen.push(a.map(String).join(" ")); };
+  process.stdout.write = (c, ...rest) => { seen.push(String(c)); return writes[0].call(process.stdout, c, ...rest); };
+  process.stderr.write = (c, ...rest) => { seen.push(String(c)); return writes[1].call(process.stderr, c, ...rest); };
+  let r;
+  try {
+    const f = fakes();
+    f.setAnswer((t) => ({ status: 500, data: { error: `RuntimeError: bad ${t} and ${t.slice(0, 12)}` } }));
+    const done = f.flow.signIn();
+    f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+    await settle();
+    f.windows[0].close();  // the user gives up
+    r = await done;
+  } finally {
+    for (const n of names) console[n] = saved[n];
+    [process.stdout.write, process.stderr.write] = writes;
+  }
+  assert.strictEqual(r.ok, false);
+  assert.strictEqual(r.cancelled, true);
+  assert.ok(!r.error.includes(TOKEN) && !r.error.includes(TOKEN.slice(0, 12)), r.error);
+  assert.match(r.error, /<redacted>/);
+  assert.ok(!seen.some((s) => s.includes(TOKEN.slice(0, 12))), "token in output");
+  assert.strictEqual(scrub(`x FRL${"a".repeat(30)} y`), "x <redacted> y");
+});
+
+test("closing the window before signing in reports it, and a second click reuses the open window", async () => {
+  const f = fakes();
+  const a = f.flow.signIn();
+  const b = f.flow.signIn();
+  assert.strictEqual(a, b);
+  assert.strictEqual(f.windows.length, 1);
+  assert.strictEqual(f.windows[0].focused, 1);
+  f.windows[0].close();
+  const r = await a;
+  assert.deepStrictEqual(r, { ok: false, cancelled: true, error: "The sign-in window was closed before you signed in." });
+  assert.deepStrictEqual(f.calls, []);
+});
+
+test("disconnect's sign-out closes the window and clears only the sign-in partition", async () => {
+  const f = fakes();
+  f.session.fromPartition("persist:other");
+  const pending = f.flow.signIn();
+  await f.flow.signOut();
+  const r = await pending;
+  assert.strictEqual(r.ok, false);
+  assert.ok(f.windows[0].isDestroyed());
+  assert.deepStrictEqual(f.meta().cleared, [["storage", undefined], ["cache"], ["auth"]]);
+  assert.deepStrictEqual(f.session.defaultSession.cleared, []);
+  assert.deepStrictEqual(f.session.fromPartition("persist:other").cleared, []);
+  // The next sign-in starts with a new window.
+  f.flow.signIn();
+  assert.strictEqual(f.windows.length, 2);
+  f.windows[1].close();
+});
+
+test("the first look at a cookie value matches the server's token rules", () => {
+  assert.ok(looksLikeUserToken(TOKEN));
+  assert.ok(looksLikeUserToken("FRL" + "aB3".repeat(10)));
+  for (const bad of [undefined, "", "OC123456789012345", "OC|123|abc", "OCabc%2Fdef" + "x".repeat(20), "OCshort",
+                     "XY" + "a".repeat(30), "OC" + "A".repeat(30)]) {
+    assert.ok(!looksLikeUserToken(bad), String(bad));
+  }
+});
+
+function frameNav(wc, url, isMainFrame) {
+  let prevented = false;
+  wc.emit("will-frame-navigate", { url, isMainFrame, preventDefault: () => { prevented = true; } });
+  return prevented;
+}
+
+test("the window stays on Meta's sites; frames inside it may load any HTTPS page, nothing else", async () => {
+  const f = fakes();
+  f.flow.signIn();
+  const wc = f.windows[0].webContents;
+  // Frames: captcha and CDN frames from other sites load; other schemes are stopped.
+  for (const ok of ["https://client-api.arkoselabs.com/fc/gc/", "https://newassets.hcaptcha.com/captcha/v1/x",
+                    "https://www.google.com/recaptcha/api2/anchor", "https://static.xx.fbcdn.net/x",
+                    "https://www.facebook.com/plugin", "about:blank", "about:srcdoc"]) {
+    assert.strictEqual(frameNav(wc, ok, false), false, ok);
+  }
+  for (const bad of ["http://www.facebook.com/plugin", "data:text/html,<script>x</script>", "blob:https://evil.example/1",
+                     "javascript:alert(1)", "file:///etc/passwd", "ftp://example.com/", "https://u:p@evil.example/",
+                     "chrome://settings", "not a url"]) {
+    assert.strictEqual(frameNav(wc, bad, false), true, bad);
+  }
+  // The window itself: Meta's sites only.
+  assert.strictEqual(frameNav(wc, "about:blank", true), true);
+  assert.strictEqual(frameNav(wc, "https://evil.example/", true), true);
+  assert.strictEqual(frameNav(wc, "https://client-api.arkoselabs.com/", true), true);
+  assert.strictEqual(frameNav(wc, "https://auth.meta.com/login/", true), false);
+  assert.deepStrictEqual(f.opened, []);  // stopped, never opened outside
+  f.windows[0].destroy();
+});
+
+function redirect(wc, url, isMainFrame, style) {
+  let prevented = false;
+  const e = { preventDefault: () => { prevented = true; } };
+  if (style === "details") wc.emit("will-redirect", Object.assign(e, { url, isMainFrame }));
+  else wc.emit("will-redirect", e, url, false, isMainFrame);
+  return prevented;
+}
+
+test("redirects follow the same rule per frame", async () => {
+  const f = fakes();
+  f.flow.signIn();
+  const wc = f.windows[0].webContents;
+  for (const style of ["details", "positional"]) {
+    // A captcha frame redirected within HTTPS loads; a frame redirected to data: or http: doesn't.
+    assert.strictEqual(redirect(wc, "https://client-api.arkoselabs.com/v2/next", false, style), false, style);
+    assert.strictEqual(redirect(wc, "https://newassets.hcaptcha.com/x", false, style), false, style);
+    assert.strictEqual(redirect(wc, "data:text/html,<b>x</b>", false, style), true, style);
+    assert.strictEqual(redirect(wc, "http://www.facebook.com/x", false, style), true, style);
+    assert.strictEqual(redirect(wc, "javascript:alert(1)", false, style), true, style);
+    // The window: Meta's sites only.
+    assert.strictEqual(redirect(wc, "https://client-api.arkoselabs.com/v2/next", true, style), true, style);
+    assert.strictEqual(redirect(wc, "https://auth.meta.com/next", true, style), false, style);
+  }
+  // Without frame information it is treated as the window.
+  assert.strictEqual(redirect(wc, "https://client-api.arkoselabs.com/", undefined, "positional"), true);
+  assert.deepStrictEqual(f.opened, []);
+  f.windows[0].destroy();
+});
+
+test("a redirect the window stops is named when the window is closed", async () => {
+  const f = fakes();
+  const p = f.flow.signIn();
+  const wc = f.windows[0].webContents;
+  assert.strictEqual(redirect(wc, "https://www.instagram.com/x?next=1", true, "details"), false);  // Meta's login goes here
+  assert.strictEqual(redirect(wc, "https://login.evil.example/cb?code=SECRET", true, "details"), true);
+  f.windows[0].close();
+  const r = await p;
+  assert.strictEqual(r.ok, false);
+  assert.match(r.error, /went to login\.evil\.example, which Frame Control doesn't allow/);
+  assert.doesNotMatch(r.error, /SECRET|code=/);
+});
+
+test("a stopped redirect is forgotten once the window loads a page again", async () => {
+  const f = fakes();
+  const p = f.flow.signIn();
+  const wc = f.windows[0].webContents;
+  assert.strictEqual(redirect(wc, "https://login.evil.example/cb", true, "details"), true);
+  wc.emit("did-navigate", {}, "https://auth.meta.com/login/");  // the user carried on
+  f.windows[0].close();
+  assert.deepStrictEqual(await p, { ok: false, cancelled: true, error: "The sign-in window was closed before you signed in." });
+});
+
+test("a page's beforeunload can't keep the window open", async () => {
+  const f = fakes();
+  const done = f.flow.signIn();
+  const w = f.windows[0];
+  let prevented = false;
+  w.webContents.emit("will-prevent-unload", { preventDefault: () => { prevented = true; } });
+  assert.ok(prevented);
+  // Even if close() would be vetoed, finishing destroys the window.
+  w.veto = true;
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  assert.strictEqual((await done).ok, true);
+  assert.ok(w.isDestroyed());
+});
+
+test("closing during a connect: the cancel goes to the server only after that connect settles", async () => {
+  for (const outcome of ["saved", "refused", "failed"]) {
+    const f = fakes();
+    let release, fail;
+    f.setAnswer(() => new Promise((r, j) => { release = r; fail = j; }));
+    const done = f.flow.signIn();
+    f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+    await settle();
+    assert.deepStrictEqual(f.calls, [TOKEN]);
+    f.windows[0].close();  // the user gives up while the server and Meta are answering
+    const r = await done;  // the page hears at once
+    assert.strictEqual(r.ok, false);
+    await settle();
+    assert.deepStrictEqual(f.cancels, [], outcome);  // not before the connect has settled
+    if (outcome === "saved") release({ status: 200, data: { connected: true } });
+    else if (outcome === "refused") release({ status: 400, data: { error: "no" } });
+    else fail(new Error("socket hang up"));
+    await settle();
+    // The same attempt id the connect carried, after it settled and after cookie intake stopped.
+    assert.deepStrictEqual(f.cancels, [f.attempts[0]], outcome);
+    assert.match(f.cancels[0], /^[A-Za-z0-9-]{8,64}$/);
+    assert.deepStrictEqual(f.log, ["connect", "destroyed", "cancel (cookie listeners: 0)"], outcome);
+    assert.deepStrictEqual(f.calls, [TOKEN]);
+  }
+});
+
+test("closing before any connect needs no cancel", async () => {
+  const f = fakes();
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".evil.example", value: TOKEN });  // nothing usable
+  await settle();
+  f.windows[0].close();
+  assert.strictEqual((await done).ok, false);
+  await f.flow.signOut();
+  await settle();
+  assert.deepStrictEqual(f.calls, []);
+  assert.deepStrictEqual(f.cancels, []);
+});
+
+test("a timeout during a connect cancels after it settles", async () => {
+  const f = fakes({ timeout: 50 });
+  let release;
+  f.setAnswer(() => new Promise((r) => { release = r; }));  // Meta is slow
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  const r = await done;
+  assert.match(r.error, /timed out/);
+  assert.ok(f.windows[0].isDestroyed());
+  assert.deepStrictEqual(f.cancels, []);
+  release({ status: 400, data: { error: "no" } });
+  await settle();
+  assert.deepStrictEqual(f.cancels, [f.attempts[0]]);
+});
+
+test("disconnect during a connect waits for it, cancels it, then clears, before the page deletes the account", async () => {
+  const f = fakes();
+  let release;
+  f.setAnswer(() => new Promise((r) => { release = r; }));
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.log.length = 0;
+  let signedOut = false;
+  const out = f.flow.signOut().then(() => { signedOut = true; });  // the page's Disconnect, step one
+  assert.strictEqual((await done).ok, false);
+  await settle();
+  assert.strictEqual(signedOut, false);  // still waiting for the connect
+  assert.deepStrictEqual(f.cancels, []);
+  release({ status: 200, data: { connected: true } });  // it saved, just now
+  await out;
+  // Only now would the page post its disconnect: the cancel (which deletes what that
+  // connect saved) has reached the server, and the session is cleared.
+  assert.deepStrictEqual(f.log, ["destroyed", "cancel (cookie listeners: 0)", "clear"]);
+  assert.deepStrictEqual(f.cancels, [f.attempts[0]]);
+});
+
+test("a later disconnect still waits for a closed window's connect", async () => {
+  const f = fakes();
+  let release;
+  f.setAnswer(() => new Promise((r) => { release = r; }));
+  const done = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.windows[0].close();
+  await done;
+  let signedOut = false;
+  const out = f.flow.signOut().then(() => { signedOut = true; });
+  await settle();
+  assert.strictEqual(signedOut, false);
+  release({ status: 400, data: { error: "no" } });
+  await out;
+  assert.deepStrictEqual(f.cancels, [f.attempts[0]]);
+});
+
+test("nothing sent means nothing to cancel; sign-out destroys the window, cancels, then clears", async () => {
+  const f = fakes();
+  // Nothing sent: closing cancels nothing.
+  const a = f.flow.signIn();
+  f.windows[0].close();
+  await a;
+  assert.deepStrictEqual(f.cancels, []);
+  // Something sent, then signed out: the attempt is cancelled before the session is cleared.
+  f.setAnswer(() => ({ status: 400, data: { error: "Meta didn't accept this token." } }));
+  const b = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.windows[1].veto = true;  // and its page tries to stay open
+  f.log.length = 0;
+  await f.flow.signOut();
+  assert.strictEqual((await b).ok, false);
+  assert.ok(f.windows[1].isDestroyed());
+  assert.deepStrictEqual(f.log, ["destroyed", "cancel (cookie listeners: 0)", "clear"]);
+  assert.deepStrictEqual(f.cancels, [f.attempts[0]]);
+  // After sign-out a new cookie in the partition sends nothing.
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  await settle();
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+});
+
+test("each sign-in has its own attempt id", async () => {
+  const f = fakes();
+  f.setAnswer(() => ({ status: 400, data: { error: "no" } }));
+  const a = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.windows[0].close();
+  await a;
+  const b = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  await settle();
+  f.windows[1].close();
+  await b;
+  await settle();
+  assert.strictEqual(f.attempts.length, 2);
+  assert.notStrictEqual(f.attempts[0], f.attempts[1]);
+  assert.deepStrictEqual(f.cancels, f.attempts);
+});
+
+test("no sign-in can start while a sign-out waits on an earlier connect", async () => {
+  const f = fakes();
+  let release;
+  f.setAnswer(() => new Promise((r) => { release = r; }));
+  const first = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  const out = f.flow.signOut();  // Disconnect pressed while that connect is under way
+  assert.strictEqual((await first).ok, false);
+  assert.ok(f.flow.isSigningOut());
+  // The page answered, so the user tries again at once: refused, no window, nothing sent.
+  const second = await f.flow.signIn();
+  assert.deepStrictEqual(second, { ok: false, error: "Frame Control is signing out of Meta; try again in a moment." });
+  assert.strictEqual(f.windows.length, 1);
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  await settle();
+  assert.deepStrictEqual(f.calls, [TOKEN]);
+  // A second sign-out joins the first.
+  assert.strictEqual(f.flow.signOut(), out);
+  release({ status: 200, data: { connected: true } });
+  await out;
+  assert.deepStrictEqual(f.cancels, [f.attempts[0]]);
+  assert.strictEqual(f.meta().cleared.filter(([k]) => k === "storage").length, 1);
+  assert.ok(!f.flow.isSigningOut());
+  // Once it is done, signing in works again.
+  f.setAnswer(() => ({ status: 200, data: { connected: true } }));
+  const third = f.flow.signIn();
+  assert.strictEqual(f.windows.length, 2);
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  assert.strictEqual((await third).ok, true);
+});
+
+test("sign-out goes round until no window and no connect or cancel is left", async () => {
+  const f = fakes();
+  let releaseA;
+  f.setAnswer(() => new Promise((r) => { releaseA = r; }));
+  const a = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: TOKEN });
+  await settle();
+  f.windows[0].close();  // window A closed; its cancel waits on its connect
+  await a;
+  // Window B is open, with its own connect under way, when sign-out starts.
+  let releaseB;
+  f.setAnswer(() => new Promise((r) => { releaseB = r; }));
+  const b = f.flow.signIn();
+  f.meta().cookies.set({ name: COOKIE, domain: ".oculus.com", value: OTHER });
+  await settle();
+  let finished = false;
+  const out = f.flow.signOut().then(() => { finished = true; });
+  await b;
+  releaseB({ status: 400, data: { error: "no" } });
+  await settle();
+  assert.strictEqual(finished, false);  // A's connect is still under way
+  releaseA({ status: 200, data: { connected: true } });
+  await out;
+  assert.deepStrictEqual([...f.cancels].sort(), [...f.attempts].sort());
+  assert.strictEqual(f.attempts.length, 2);
+  assert.strictEqual(f.log[f.log.length - 1], "clear");
+});

app/test/preferences.test.js

@@ -0,0 +1,68 @@
+const test = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const os = require("node:os");
+const path = require("node:path");
+const { preferenceStore } = require("../preferences");
+
+function fixture(t) {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "frame-preferences-"));
+  t.after(() => fs.rmSync(dir, { recursive: true, force: true }));
+  return path.join(dir, "client-preferences.json");
+}
+
+test("desktop packaging includes every local application module dependency", () => {
+  const root = path.resolve(__dirname, "..");
+  const packaged = new Set(require("../package.json").build.files);
+  for (const file of ["main.js", "preload.js"]) {
+    const source = fs.readFileSync(path.join(root, file), "utf8");
+    for (const match of source.matchAll(/require\(["'](\.\/[^"']+)["']\)/g)) {
+      const target = match[1].slice(2) + ".js";
+      assert.ok(packaged.has(target), `${file} needs packaged ${target}`);
+    }
+  }
+});
+
+test("client choices survive a new native session and local server origin", t => {
+  const file = fixture(t);
+  const first = preferenceStore(file);
+  assert.deepEqual(first.read(), {});
+  first.write("mvSeparate", "0");
+  first.write("padUsed", "1");
+  // A new process/session reads the same client store, regardless of its URL.
+  const second = preferenceStore(file);
+  assert.deepEqual(second.read(), { mvSeparate: "0", padUsed: "1" });
+  second.write("mvSeparate", "1");
+  assert.deepEqual(first.read(), { mvSeparate: "1", padUsed: "1" });
+});
+
+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/);
+  }
+  assert.equal(fs.existsSync(file), false);
+  fs.writeFileSync(file, JSON.stringify({ token: "discard", mvSeparate: "0", padUsed: 1 }));
+  assert.deepEqual(store.read(), { mvSeparate: "0" });
+  store.write("padUsed", "1");
+  assert.deepEqual(JSON.parse(fs.readFileSync(file, "utf8")), { mvSeparate: "0", padUsed: "1" });
+});
+
+test("a missing or damaged preference file retains usable defaults", t => {
+  const file = fixture(t), store = preferenceStore(file);
+  assert.deepEqual(store.read(), {});
+  for (const bad of ["{broken", "null", "[]", '"text"']) {
+    fs.writeFileSync(file, bad);
+    assert.deepEqual(store.read(), {});
+  }
+  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/);
+});

app/test/updater.test.js

@@ -0,0 +1,80 @@
+// Run: node --test app/test/
+const test = require("node:test");
+const assert = require("node:assert");
+const { isNewer, assetName, updateMethod, macBundle } = require("../updater");
+
+test("versions compare numerically, and a release beats its pre-releases", () => {
+  assert.ok(isNewer("0.3.10", "0.3.9"));
+  assert.ok(isNewer("v1.0.0", "0.9.9"));
+  assert.ok(!isNewer("0.3.1", "0.3.1"));
+  assert.ok(!isNewer("0.3.0", "0.3.1"));
+  assert.ok(isNewer("1.0.0", "1.0.0-beta.1"));
+  assert.ok(!isNewer("1.0.0-beta.1", "1.0.0"));
+  assert.ok(!isNewer("garbage", "0.1.0"));
+});
+
+test("asset names match what electron-builder publishes", () => {
+  assert.strictEqual(assetName("darwin", "arm64", "mac-zip"), "Frame-Control-mac-arm64.zip");
+  assert.strictEqual(assetName("win32", "x64", "nsis"), "Frame-Control-Setup-x64.exe");
+  assert.strictEqual(assetName("linux", "x64", "appimage"), "Frame-Control-linux-x86_64.AppImage");
+  assert.strictEqual(assetName("linux", "arm64", "appimage"), "Frame-Control-linux-arm64.AppImage");
+});
+
+const base = { isPackaged: true, env: {}, exists: () => false, writable: () => true };
+
+test("macOS updates in place only from a writable, non-translocated location", () => {
+  const exe = "/Applications/Frame Control.app/Contents/MacOS/Frame Control";
+  assert.strictEqual(macBundle(exe), "/Applications/Frame Control.app");
+  assert.deepStrictEqual(updateMethod({ ...base, platform: "darwin", execPath: exe }),
+                         { method: "mac-zip", bundle: "/Applications/Frame Control.app" });
+  const dmg = "/Volumes/Frame Control 0.3.1/Frame Control.app/Contents/MacOS/Frame Control";
+  assert.strictEqual(updateMethod({ ...base, platform: "darwin", execPath: dmg }).method, "manual");
+  const trans = "/private/var/folders/x/AppTranslocation/ABC/d/Frame Control.app/Contents/MacOS/Frame Control";
+  assert.strictEqual(updateMethod({ ...base, platform: "darwin", execPath: trans }).method, "manual");
+  assert.strictEqual(updateMethod({ ...base, platform: "darwin", execPath: exe, writable: () => false }).method, "manual");
+});
+
+test("Windows needs the installer's copy; Linux needs an AppImage", () => {
+  const exe = "C:\\Users\\a\\AppData\\Local\\Programs\\Frame Control\\Frame Control.exe";
+  assert.strictEqual(updateMethod({ ...base, platform: "win32", execPath: exe, exists: () => true }).method, "nsis");
+  assert.strictEqual(updateMethod({ ...base, platform: "win32", execPath: exe }).method, "manual");
+  assert.strictEqual(updateMethod({ ...base, platform: "linux", execPath: "/opt/x", env: { APPIMAGE: "/home/a/F.AppImage" } }).method,
+                     "appimage");
+  assert.strictEqual(updateMethod({ ...base, platform: "linux", execPath: "/opt/Frame Control/frame-control" }).method, "manual");
+  assert.strictEqual(updateMethod({ ...base, isPackaged: false, platform: "darwin", execPath: "x" }).method, "manual");
+});
+
+test("update.json assets always download from this repository's release", () => {
+  const r = require("../updater").fromManifest({ version: "0.4.0", notes: "n", assets: [
+    { name: "Frame-Control-mac-arm64.zip", url: "https://evil.example/x.zip", digest: "sha256:" + "a".repeat(64) }] });
+  assert.strictEqual(r.assets[0].url, "https://github.com/saphid/frame-control/releases/download/v0.4.0/Frame-Control-mac-arm64.zip");
+  assert.throws(() => require("../updater").fromManifest({ version: "nope", assets: [] }));
+});
+
+test("the release page is this repository's tag page, never a draft's untagged-... link", () => {
+  const { fromManifest, fromApi } = require("../updater");
+  const tagPage = "https://github.com/saphid/frame-control/releases/tag/v0.4.0";
+  const page = (p) => fromManifest({ version: "0.4.0", assets: [], page: p }).page;
+  assert.strictEqual(page(tagPage), tagPage);
+  // 0.4.0's real update.json: the draft's address, a 404 once published.
+  assert.strictEqual(page("https://github.com/saphid/frame-control/releases/tag/untagged-c6ddfed7f75d67db2e99"), tagPage);
+  assert.strictEqual(page(undefined), tagPage);
+  assert.strictEqual(page("https://evil.example/releases/tag/v0.4.0"), tagPage);
+  assert.strictEqual(page("https://github.com/saphid/frame-control/releases/tag/v0.4.0?x=1"), tagPage);
+  // Paths that normalize to another repository.
+  assert.strictEqual(page("https://github.com/saphid/frame-control/releases/tag/..\\..\\..\\..\\other-owner\\other-repo"),
+                     tagPage);
+  assert.strictEqual(page("https://github.com/saphid/frame-control/releases/tag/%2e%2e/%2e%2e/%2e%2e/%2e%2e/other-owner/other-repo"),
+                     tagPage);
+  assert.strictEqual(page("https://github.com/saphid/frame-control/releases/tag/v0.3.9"), tagPage);  // only its own tag
+  assert.strictEqual(fromApi({ tag_name: "../../x", assets: [] }).page, "https://github.com/saphid/frame-control/releases");
+  assert.strictEqual(fromApi({ tag_name: "v0.4.0", assets: [],
+                               html_url: "https://github.com/saphid/frame-control/releases/tag/untagged-x" }).page, tagPage);
+});
+
+test("prepare refuses a release that isn't newer (no downgrades)", async () => {
+  const { prepare } = require("../updater");
+  const release = { version: "0.3.1", assets: [] };
+  await assert.rejects(prepare(release, { method: "appimage", appImage: "/nonexistent/x" }, null, "0.4.0"), /isn't newer/);
+  await assert.rejects(prepare(release, { method: "appimage", appImage: "/nonexistent/x" }, null, "0.3.1"), /isn't newer/);
+});

app/updater.js

@@ -0,0 +1,263 @@
+// Update checks and self-update for the desktop app (docs/releasing.md).
+//
+// The newest version is GitHub's "latest" release of saphid/frame-control. Drafts
+// and pre-releases never count, so a build reaches people only when the
+// maintainer publishes it after testing (scripts/publish-release.sh). That
+// script attaches update.json (version, notes, each asset's SHA-256), read
+// through github.com's latest/download link: the REST API allows only 60
+// unauthenticated requests an hour per IP address, shared by everyone behind
+// the same router, so it's only the fallback.
+//
+// Every download is checked against the SHA-256 digest GitHub records for the
+// asset before anything is replaced. How the update is applied:
+//   macOS     the .zip: unpacked next to the running app, swapped in by a small
+//             script once the app has quit, then reopened.
+//   Windows   the NSIS installer, run silently over the current install; it
+//             reopens the app. A copy unpacked from the .zip is updated by hand.
+//   Linux     the AppImage replaces itself; .deb installs are updated by hand.
+// When the app can't update itself it opens the release page instead.
+const { execFile, spawn } = require("child_process");
+const crypto = require("crypto");
+const fs = require("fs");
+const https = require("https");
+const os = require("os");
+const path = require("path");
+
+const REPO = "saphid/frame-control";  // renamed from saphid/steam-frame; GitHub redirects the old name
+const LATEST = `https://api.github.com/repos/${REPO}/releases/latest`;
+const MANIFEST = `https://github.com/${REPO}/releases/latest/download/update.json`;
+const RELEASES = `https://github.com/${REPO}/releases`;
+
+// "0.3.1" or "v0.3.1" -> [0, 3, 1]; pre-release suffixes sort before the release.
+function parseVersion(v) {
+  const m = String(v || "").trim().replace(/^v/i, "").match(/^(\d+)\.(\d+)\.(\d+)(?:-([0-9A-Za-z.-]+))?$/);
+  return m ? { nums: [+m[1], +m[2], +m[3]], pre: m[4] || null } : null;
+}
+
+function isNewer(candidate, current) {
+  const a = parseVersion(candidate), b = parseVersion(current);
+  if (!a || !b) return false;
+  for (let i = 0; i < 3; i++) if (a.nums[i] !== b.nums[i]) return a.nums[i] > b.nums[i];
+  if (a.pre === b.pre) return false;
+  if (!a.pre) return true;   // 1.0.0 is newer than 1.0.0-beta
+  if (!b.pre) return false;
+  return a.pre > b.pre;
+}
+
+// The asset this copy of the app updates from, by the names electron-builder gives them.
+function assetName(platform, arch, method) {
+  if (method === "mac-zip") return `Frame-Control-mac-${arch}.zip`;
+  if (method === "nsis") return `Frame-Control-Setup-${arch}.exe`;
+  if (method === "appimage") return `Frame-Control-linux-${arch === "x64" ? "x86_64" : arch}.AppImage`;
+  return null;
+}
+
+// How this copy can update itself: mac-zip, nsis, appimage, or manual (with why).
+function updateMethod({ platform, isPackaged, execPath, env, exists, writable }) {
+  if (!isPackaged) return { method: "manual", why: "running from a source checkout" };
+  if (platform === "darwin") {
+    const bundle = macBundle(execPath);
+    if (!bundle) return { method: "manual", why: "can't find the app bundle" };
+    if (bundle.includes("/AppTranslocation/") || bundle.startsWith("/Volumes/")) {
+      return { method: "manual", why: "move Frame Control to Applications first" };
+    }
+    if (!writable(path.dirname(bundle))) return { method: "manual", why: `${path.dirname(bundle)} isn't writable` };
+    return { method: "mac-zip", bundle };
+  }
+  if (platform === "win32") {
+    // electron-builder's NSIS install puts its uninstaller next to the app.
+    const dir = path.dirname(execPath);
+    if (exists(path.join(dir, "Uninstall Frame Control.exe"))) return { method: "nsis" };
+    return { method: "manual", why: "not installed with the installer" };
+  }
+  if (platform === "linux" && env.APPIMAGE) {
+    if (!writable(path.dirname(env.APPIMAGE))) return { method: "manual", why: "the AppImage's folder isn't writable" };
+    return { method: "appimage", appImage: env.APPIMAGE };
+  }
+  return { method: "manual", why: "installed from a package" };
+}
+
+function macBundle(execPath) {
+  const i = execPath.indexOf(".app/Contents/MacOS/");
+  return i < 0 ? null : execPath.slice(0, i + 4);
+}
+
+function get(url, { headers = {}, timeout = 20000, redirects = 5 } = {}) {
+  return new Promise((resolve, reject) => {
+    const req = https.get(url, { headers: { "user-agent": "FrameControl-updater", ...headers }, timeout }, (res) => {
+      if ([301, 302, 303, 307, 308].includes(res.statusCode) && res.headers.location && redirects > 0) {
+        res.resume();
+        const next = new URL(res.headers.location, url);
+        if (next.protocol !== "https:") return reject(new Error("refusing a non-HTTPS redirect"));
+        return resolve(get(next.href, { headers, timeout, redirects: redirects - 1 }));
+      }
+      if (res.statusCode !== 200) { res.resume(); return reject(new Error(`HTTP ${res.statusCode} from ${new URL(url).host}`)); }
+      resolve(res);
+    });
+    req.on("timeout", () => req.destroy(new Error("timed out")));
+    req.on("error", reject);
+  });
+}
+
+async function getJson(url, headers) {
+  const res = await get(url, { headers });
+  let body = "";
+  for await (const chunk of res) body += chunk;
+  return JSON.parse(body);
+}
+
+// The release page the banner links to. update.json for 0.4.0 carried the draft's
+// address (releases/tag/untagged-...), which is dead once the release is published,
+// and a page from the manifest could also be steered elsewhere (e.g. tag/..\..\other/repo
+// normalizes to another repository) before shell.openExternal. So the given page is
+// ignored: the link is always this repository's tag page, built from a valid version.
+function releasePage(version) {
+  const v = parseVersion(version);
+  if (!v) return RELEASES;
+  return `${RELEASES}/tag/v${v.nums.join(".")}${v.pre ? "-" + v.pre : ""}`;
+}
+
+// update.json and the API's release both become { version, notes, page, assets }.
+function fromManifest(m) {
+  if (!parseVersion(m.version) || !Array.isArray(m.assets)) throw new Error("update.json is malformed");
+  const version = String(m.version).replace(/^v/i, "");
+  const base = `https://github.com/${REPO}/releases/download/v${version}/`;
+  return { version, notes: String(m.notes || "").slice(0, 4000),
+           page: releasePage(version),
+           // Assets always come from this repository's release, whatever the manifest says.
+           assets: m.assets.map((a) => ({ name: String(a.name), url: base + encodeURIComponent(String(a.name)),
+                                          size: a.size, digest: a.digest || null })) };
+}
+
+function fromApi(r) {
+  if (r.draft || r.prerelease) throw new Error("GitHub returned an unpublished release");
+  const version = String(r.tag_name || "").replace(/^v/i, "");
+  return { version, notes: String(r.body || "").slice(0, 4000),
+           page: releasePage(version),
+           assets: (r.assets || []).map((a) => ({ name: a.name, url: a.browser_download_url, size: a.size,
+                                                 digest: a.digest || null })) };
+}
+
+async function latestRelease() {
+  try {
+    return fromManifest(await getJson(MANIFEST));
+  } catch (e) {
+    if (!/HTTP 404/.test(e.message)) throw e;  // releases before update.json existed
+  }
+  return fromApi(await getJson(LATEST, { accept: "application/vnd.github+json" }));
+}
+
+async function download(asset, dest, onProgress) {
+  const m = /^sha256:([0-9a-f]{64})$/.exec(asset.digest || "");
+  if (!m) throw new Error(`GitHub has no SHA-256 for ${asset.name}, so it can't be checked`);
+  const res = await get(asset.url, { timeout: 60000 });
+  const total = +res.headers["content-length"] || asset.size || 0;
+  const hash = crypto.createHash("sha256");
+  // "wx": a new file only, never through an existing file or symlink at that path.
+  const out = fs.createWriteStream(dest, { mode: 0o755, flags: "wx" });
+  let done = 0;
+  await new Promise((resolve, reject) => {
+    res.on("data", (chunk) => { hash.update(chunk); done += chunk.length; onProgress && onProgress(done, total); });
+    res.on("error", reject);
+    out.on("error", reject);
+    out.on("finish", resolve);
+    res.pipe(out);
+  });
+  if (hash.digest("hex") !== m[1]) {
+    fs.rmSync(dest, { force: true });
+    throw new Error(`${asset.name} didn't match its SHA-256; nothing was changed`);
+  }
+}
+
+const run = (cmd, args) => new Promise((resolve, reject) =>
+  execFile(cmd, args, { timeout: 120000 }, (err, stdout, stderr) => err ? reject(new Error((stderr || err.message).trim())) : resolve(stdout)));
+
+// Waits for this process to exit, swaps the new bundle in (putting the old one
+// back if that fails), and reopens the app.
+const MAC_SWAP = `set -u
+pid="$1"; app="$2"; new="$3"; stage="$4"
+while kill -0 "$pid" 2>/dev/null; do sleep 0.2; done
+old="$stage/old.app"
+if mv "$app" "$old"; then
+  if mv "$new" "$app"; then rm -rf "$old"; else mv "$old" "$app"; fi
+fi
+xattr -dr com.apple.quarantine "$app" 2>/dev/null
+rm -rf "$stage"
+open "$app"
+`;
+
+async function applyMac(release, bundle, onProgress) {
+  const asset = release.assets.find((a) => a.name === assetName("darwin", process.arch, "mac-zip"));
+  if (!asset) throw new Error(`the release has no ${assetName("darwin", process.arch, "mac-zip")}`);
+  // Staged beside the app, so the final move stays on one volume.
+  const stage = fs.mkdtempSync(path.join(path.dirname(bundle), ".frame-control-update-"));
+  try {
+    const zip = path.join(stage, asset.name);
+    await download(asset, zip, onProgress);
+    await run("/usr/bin/ditto", ["-x", "-k", zip, stage]);
+    fs.rmSync(zip, { force: true });
+    const name = fs.readdirSync(stage).find((n) => n.endsWith(".app"));
+    if (!name) throw new Error("the download has no app in it");
+    const fresh = path.join(stage, name);
+    const version = (await run("/usr/bin/plutil", ["-extract", "CFBundleShortVersionString", "raw",
+                                                   path.join(fresh, "Contents", "Info.plist")])).trim();
+    if (version !== release.version) throw new Error(`the download is version ${version}, not ${release.version}`);
+    const script = path.join(stage, "swap.sh");
+    fs.writeFileSync(script, MAC_SWAP);
+    return () => spawn("/bin/sh", [script, String(process.pid), bundle, fresh, stage],
+                       { detached: true, stdio: "ignore" }).unref();
+  } catch (e) {
+    fs.rmSync(stage, { recursive: true, force: true });
+    throw e;
+  }
+}
+
+async function applyNsis(release, onProgress) {
+  const asset = release.assets.find((a) => a.name === assetName("win32", process.arch, "nsis"));
+  if (!asset) throw new Error(`the release has no ${assetName("win32", process.arch, "nsis")}`);
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "frame-control-update-"));
+  const exe = path.join(dir, asset.name);
+  await download(asset, exe, onProgress);
+  // /S: silent, into the existing install. --force-run: open the app afterwards.
+  return () => spawn(exe, ["--updated", "/S", "--force-run"], { detached: true, stdio: "ignore" }).unref();
+}
+
+async function applyAppImage(release, appImage, onProgress) {
+  const asset = release.assets.find((a) => a.name === assetName("linux", process.arch, "appimage"));
+  if (!asset) throw new Error(`the release has no ${assetName("linux", process.arch, "appimage")}`);
+  // A private folder beside the AppImage, so the final rename stays on one filesystem.
+  const stage = fs.mkdtempSync(path.join(path.dirname(appImage), ".frame-control-update-"));
+  try {
+    const next = path.join(stage, asset.name);
+    await download(asset, next, onProgress);
+    fs.chmodSync(next, 0o755);
+    fs.renameSync(next, appImage);  // the running copy keeps its open file
+  } finally {
+    fs.rmSync(stage, { recursive: true, force: true });
+  }
+  // Without FUSE the AppImage runs extracted (--appimage-extract-and-run, which isn't passed
+  // on to the app); a FUSE mount lives under /tmp/.mount_*. Keep the same mode on restart.
+  const extracted = process.env.APPIMAGE_EXTRACT_AND_RUN === "1" || !process.execPath.includes("/.mount_");
+  const env = { ...process.env, APPIMAGE: appImage, ...(extracted ? { APPIMAGE_EXTRACT_AND_RUN: "1" } : {}) };
+  // Started only once this process has exited, or the new copy would lose the single-instance lock.
+  return () => spawn("/bin/sh", ["-c", 'while kill -0 "$1" 2>/dev/null; do sleep 0.2; done; exec "$2"',
+                                 "sh", String(process.pid), appImage], { detached: true, stdio: "ignore", env }).unref();
+}
+
+// Downloads and prepares the update; returns a function that starts the swap,
+// to be called just before the app quits.
+async function prepare(release, how, onProgress, current) {
+  if (!isNewer(release.version, current)) throw new Error(`${release.version} isn't newer than ${current}`);
+  if (how.method === "mac-zip") return applyMac(release, how.bundle, onProgress);
+  if (how.method === "nsis") return applyNsis(release, onProgress);
+  if (how.method === "appimage") return applyAppImage(release, how.appImage, onProgress);
+  throw new Error(how.why || "this copy can't update itself");
+}
+
+function writable(dir) {
+  try { fs.accessSync(dir, fs.constants.W_OK); return true; } catch { return false; }
+}
+
+module.exports = { REPO, RELEASES, parseVersion, isNewer, assetName, updateMethod, macBundle, latestRelease,
+                   fromManifest, fromApi,
+                   download, prepare, writable };

bench/pages/present.html

@@ -0,0 +1,24 @@
+<!doctype html>
+<!-- Control experiment, run on the Frame itself: how often does Chromium on
+     gamescope put a canvas animation on screen, with no network or decoding
+     involved? Draws every animation frame for ?s= seconds and writes the
+     frame-gap histogram per second into the title, where xprop can read it. -->
+<html><head><meta charset="utf-8"><title>fmv-present</title></head>
+<body style="margin:0;background:#000"><canvas id="c" width="1280" height="720" style="width:100%;height:100%"></canvas>
+<script>
+const q = new URLSearchParams(location.search), secs = +q.get("s") || 15, tag = q.get("tag") || "";
+const ctx = document.getElementById("c").getContext("2d", { alpha: false, desynchronized: true });
+const perSec = []; let t0 = 0, last = 0, n = 0, gaps = [];
+function frame(t) {
+  if (!t0) t0 = last = t;
+  ctx.fillStyle = "#123"; ctx.fillRect(0, 0, 1280, 720);
+  ctx.fillStyle = "#fff"; ctx.fillRect((n * 21) % 1280, 0, 20, 720); n++;
+  const s = Math.floor((t - t0) / 1000);
+  (perSec[s] = perSec[s] || []).push(t - last); last = t;
+  if (t - t0 < secs * 1000) return requestAnimationFrame(frame);
+  const out = perSec.map(g => g.length).join(",");
+  document.title = `[${tag}] done fps/s=${out}`;
+}
+document.title = `[${tag}] running`;
+requestAnimationFrame(frame);
+</script></body></html>

bench/pages/scroll.html

@@ -0,0 +1,32 @@
+<!doctype html>
+<!-- Benchmark content: a long page of text that scrolls itself at a steady
+     speed, so every frame changes the way reading a real page does. -->
+<html lang="en"><head><meta charset="utf-8"><title>fmv-bench scroll</title>
+<style>
+  body { font: 17px/1.55 -apple-system, "Helvetica Neue", sans-serif; margin: 0 auto; max-width: 900px; padding: 24px; color: #1d1d1f; background: #fff; }
+  h2 { font-size: 22px; margin: 28px 0 8px; } code { background: #f2f2f5; padding: 1px 4px; border-radius: 3px; }
+</style></head><body><div id="doc"></div>
+<script>
+const words = "latency frame panel stream encoder decoder network display pixel window capture budget quality motion text sharp adaptive controller queue socket clock".split(" ");
+let seed = 7; const rnd = () => (seed = (seed * 16807) % 2147483647) / 2147483647;
+let html = "";
+for (let s = 0; s < 120; s++) {
+  html += `<h2>Section ${s + 1}: ${words[s % words.length]} and ${words[(s * 7) % words.length]}</h2>`;
+  for (let p = 0; p < 4; p++) {
+    let para = [];
+    for (let w = 0; w < 70; w++) para.push(rnd() < 0.05 ? `<code>${words[Math.floor(rnd() * words.length)]}()</code>` : words[Math.floor(rnd() * words.length)]);
+    html += `<p>${para.join(" ")}.</p>`;
+  }
+}
+document.getElementById("doc").innerHTML = html;
+// 240 points a second, whatever the display's refresh rate.
+// The title carries the page's own frame rate, so the source's rate is known.
+let last = performance.now(), frames = 0, since = last;
+function step(now) {
+  const dy = (now - last) * 0.24; last = now;
+  if (++frames && now - since >= 1000) { document.title = `fmv-bench scroll ${frames} fps`; frames = 0; since = now; }
+  if (window.scrollY + innerHeight >= document.body.scrollHeight - 2) window.scrollTo(0, 0); else window.scrollBy(0, dy);
+  requestAnimationFrame(step);
+}
+requestAnimationFrame(step);
+</script></body></html>

bench/pages/type.html

@@ -0,0 +1,9 @@
+<!doctype html>
+<!-- Benchmark content: a plain text editor, focused, for typing tests. -->
+<html lang="en"><head><meta charset="utf-8"><title>fmv-bench type</title>
+<style>
+  html, body { margin: 0; height: 100%; background: #fff; }
+  textarea { box-sizing: border-box; width: 100%; height: 100%; border: 0; padding: 20px; outline: none; resize: none;
+             font: 20px/1.5 ui-monospace, Menlo, monospace; color: #111; caret-color: transparent; }  /* a blinking caret would pass for a reply to a key */
+</style></head><body><textarea id="t" autofocus spellcheck="false"></textarea>
+<script>document.getElementById("t").focus();</script></body></html>

bench/results/2026-09-28-1d05f57-usb1.json

@@ -0,0 +1,677 @@
+{
+ "label": "usb1",
+ "date": "2026-09-28T21:16:03",
+ "commit": "1d05f57",
+ "config": {
+  "quality": "balanced",
+  "mode": "separate",
+  "net": "none",
+  "delay_ms": 0,
+  "buffer_ms": 250,
+  "host": "10.86.200.233",
+  "ssh_opts": [],
+  "encoder": "",
+  "duration_s": 15.0,
+  "browser_flags": []
+ },
+ "frame_build": "20260925.6191901",
+ "mac": "26.5.2",
+ "headset": "",
+ "scenarios": [
+  {
+   "scenario": "test",
+   "frames_sent": 911,
+   "frames_drawn": 911,
+   "frames_shown": 610,
+   "duration_s": 15.2,
+   "stages_ms": {
+    "capture": {
+     "p50": 0.0,
+     "p95": 0.0,
+     "p99": 0.0,
+     "n": 911
+    },
+    "queue": {
+     "p50": 0.0,
+     "p95": 0.1,
+     "p99": 0.1,
+     "n": 911
+    },
+    "encode": {
+     "p50": 4.4,
+     "p95": 5.0,
+     "p99": 5.2,
+     "n": 911
+    },
+    "socket": {
+     "p50": 0.1,
+     "p95": 0.2,
+     "p99": 0.2,
+     "n": 911
+    },
+    "network": {
+     "p50": 1.1,
+     "p95": 1.6,
+     "p99": 2.1,
+     "n": 911
+    },
+    "decode": {
+     "p50": 1.2,
+     "p95": 2.6,
+     "p99": 3.9,
+     "n": 911
+    },
+    "draw": {
+     "p50": 0.4,
+     "p95": 0.9,
+     "p99": 1.5,
+     "n": 911
+    },
+    "present": {
+     "p50": 5.8,
+     "p95": 13.6,
+     "p99": 16.7,
+     "n": 610
+    },
+    "content": {
+     "p50": 7.3,
+     "p95": 8.8,
+     "p99": 10.0,
+     "n": 911
+    },
+    "content_shown": {
+     "p50": 13.6,
+     "p95": 20.4,
+     "p99": 24.9,
+     "n": 610
+    }
+   },
+   "fps": 59.9,
+   "fps_shown": 40.1,
+   "late_pct": 0.22,
+   "stall_max": 32.3,
+   "stalls_over_100ms": 0,
+   "mbps": 0.48,
+   "keyframes": 1,
+   "size": "1280x720",
+   "captured": 912,
+   "viewer_never_drawn": 0,
+   "input_ms": {
+    "p50": 16.6,
+    "p95": 24.3,
+    "p99": 24.5,
+    "n": 30
+   },
+   "input_shown_ms": {
+    "p50": 20.8,
+    "p95": 31.8,
+    "p99": 33.8,
+    "n": 22
+   },
+   "input_parts_ms": {
+    "uplink": {
+     "p50": 0.7,
+     "p95": 1.0,
+     "p99": 1.0,
+     "n": 30
+    },
+    "mac": {
+     "p50": 9.1,
+     "p95": 15.0,
+     "p99": 15.2,
+     "n": 30
+    },
+    "back": {
+     "p50": 7.2,
+     "p95": 8.5,
+     "p99": 12.7,
+     "n": 30
+    }
+   },
+   "inputs": {
+    "asked": 30,
+    "sent": 30,
+    "seen": 30
+   },
+   "timeline": [
+    {
+     "t": 0,
+     "fps": 60,
+     "mbps": 0.5,
+     "content_p50": 7.3,
+     "content_p95": 8.6,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 1,
+     "fps": 60,
+     "mbps": 0.5,
+     "content_p50": 7.1,
+     "content_p95": 8.9,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 2,
+     "fps": 59,
+     "mbps": 0.48,
+     "content_p50": 7.2,
+     "content_p95": 8.6,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 3,
+     "fps": 60,
+     "mbps": 0.49,
+     "content_p50": 7.1,
+     "content_p95": 9.0,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 4,
+     "fps": 60,
+     "mbps": 0.49,
+     "content_p50": 6.9,
+     "content_p95": 8.2,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 5,
+     "fps": 60,
+     "mbps": 0.58,
+     "content_p50": 7.3,
+     "content_p95": 8.1,
+     "bitrate": 5529600,
+     "tier": 0,
+     "w": 1280,
+     "net": null
+    },
+    {
+     "t": 6,
+     "fps": 60,
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+ ]
+}

bench/results/2026-09-28-1d05f57-usb2.json

@@ -0,0 +1,690 @@
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+   "src": "separate:8187"
+  }
+ ]
+}

bench/results/2026-09-28-1d05f57-wifi1.json

@@ -0,0 +1,682 @@
+{
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+ "date": "2026-09-28T21:16:56",
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+   "show_s": 1.25,
+   "panel": "valve.steam.desktopgame.2001195625",
+   "src": "separate:8050"
+  }
+ ]
+}

bench/results/2026-09-28-1d05f57-wifi2.json

@@ -0,0 +1,682 @@
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+ ]
+}

bench/results/2026-09-28-a3c6e5c-dirty-adapt-clean.json

@@ -0,0 +1,984 @@
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+    "content_p95": "local",
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+    "stall_max": "local"
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+   "panel": "valve.steam.desktopgame.2001414593",
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+   ],
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+    "input_p95": "local"
+   },
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+    "frame_sshd_pct": 0.2,
+    "frame_gamescope_pct": 4.7,
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+   },
+   "viewer": "h264 software; ANGLE (Mesa, zink Vulkan 1.4(Turnip Adreno (TM) 750 (MESA_TURNIP)), OpenGL 4.6); raf 140 Hz",
+   "show_s": 5.12,
+   "panel": "valve.steam.desktopgame.2001910179",
+   "src": "separate:9510"
+  }
+ ]
+}

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",
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+  "encoder": "",
+  "duration_s": 10.0,
+  "browser_flags": []
+ },
+ "frame_build": "20260925.6191901",
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+ "source": "",
+ "pc_host": true,
+ "headset": "0:03.056203 [Info] - 1 - leaving standby",
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+     "net": null
+    },
+    {
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+   ],
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+    "content_p95": "acceptable",
+    "input_p50": "local",
+    "input_p95": "acceptable",
+    "fps": "bad",
+    "late_pct": "bad",
+    "stall_max": "acceptable"
+   },
+   "controller": {
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+    "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": {
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+  "host": "frame",
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+  "ssh_opts": [],
+  "encoder": "",
+  "duration_s": 10.0,
+  "browser_flags": []
+ },
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+ "source": "",
+ "pc_host": true,
+ "headset": "0:03.056203 [Info] - 1 - leaving standby",
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+     "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."
+}

compat-db/README.md

@@ -1,9 +1,32 @@
 # compat-db: Frame Control's compatibility database
 
 A private [Lakebed](https://docs.lakebed.dev/) capsule holding compatibility
-reports for Android apps on the Steam Frame. For now only the maintainer's
-copy of Frame Control has the key to read or write it. Everyone else's reports
-stay on their own Mac (see `shared()` in `ui/frame_compat_db.py`).
+reports for Android apps on the Steam Frame. Only the maintainer's copy of
+Frame Control has the key to read or write it (see `shared()` in
+`ui/frame_compat_db.py`). Everyone else's reports stay on their computer
+unless they turn on **Share compatibility results**. Then the reports also go
+to PostHog as `compat_report` events, and the maintainer syncs them in (below).
+
+## Community reports
+
+```sh
+python3 ui/frame_compat_db.py sync --dry-run   # what would be added
+python3 ui/frame_compat_db.py sync             # add them
+```
+
+`sync` reads `compat_report` events through PostHog's query API and adds
+them with `via` set to `community`, `community-probe` or `community-install`.
+It skips invalid reports and anything over 30 per reporter per day. Each run
+re-reads the last 30 days, because an offline copy sends its reports late,
+with the time they were made. `posthog-sync.json`, next to the outbox,
+remembers which reports it has handled and each reporter's daily count, so
+nothing is added twice and the cap holds across runs.
+
+It needs:
+
+- the PostHog project id: `"project"` in `ui/telemetry.json`
+- a personal API key with `query:read`: `POSTHOG_PERSONAL_API_KEY`, or in the
+  Keychain (service `frame-control-posthog`, account `personal-api-key`)
 
 - Live: `https://frame-compat.lakebed.app` (deploy `dep_dDmcsosVSiFirpW6`,
   claimed, so it doesn't expire). The browser page only says it's private.

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/agents.md

@@ -0,0 +1,222 @@
+# Frame Control for AI agents
+
+**Documented interface:** Frame Control's own stdlib Python MCP adapter wraps
+its loopback HTTP API. No API key, hosted service, model SDK or third-party
+helper app is needed. The assistant is our HTML/Python implementation hosted
+in the platform Chromium browser. Its optional LLM endpoint is user configuration.
+Installing other apps is an optional management action, never a prerequisite.
+
+## Connect an MCP client
+
+The default MCP command starts a private HTTP backend on a free loopback port,
+with a fresh local access key. It stops that backend when the MCP client closes
+stdin or sends SIGTERM. It uses its own SSH control socket, so closing it does
+not close the desktop app's connection. No manually started server is needed.
+
+Add this stdio server to your MCP client (use absolute paths):
+
+```json
+{
+  "mcpServers": {
+    "frame-control": {
+      "command": "python3",
+      "args": ["/absolute/path/frame-control/ui/frame_mcp.py"]
+    }
+  }
+}
+```
+
+For Codex, the equivalent registration is:
+
+```sh
+codex mcp add frame-control -- python3 /absolute/path/frame-control/ui/frame_mcp.py
+```
+
+New agent sessions load the entry. An already running session may need its MCP
+connections reloaded; registration does not retroactively add tools to its
+initial tool inventory. Keep the checkout at that path while it is registered.
+Use `codex mcp remove frame-control` to remove only this registration.
+
+To reuse a running server instead, pass `--url http://127.0.0.1:47810`.
+The desktop app uses a random port; use that port with `--url`, or run the
+checkout server above. If the HTTP server uses `FRAME_UI_KEY`, pass the same
+value in the MCP process environment. This is local access control, not an LLM
+API key. The adapter only accepts loopback HTTP servers, refuses redirects and
+ignores environment proxies. Stdout contains newline-delimited JSON-RPC only.
+It supports MCP initialization, ping, tool listing and tool calls; no sampling,
+resources, prompts or streaming transport.
+
+| Tool | Arguments | Effect |
+|---|---|---|
+| `computer_state` | none | Read-only gamescope window IDs/focus and bounded AT-SPI tree; reports incomplete observations |
+| `status` | none | Battery, services, installed games and Flatpaks |
+| `screenshot` | `view`: `headset` (default) or `desktop` | Returns PNG image content to the MCP client |
+| `job` | `id` | Background install status; poll until `done`, inspect `error` |
+| `launch` | `appid` | Launch an installed Steam app |
+| `install` / `uninstall` | `id` | Install from Flathub / remove a user Flatpak |
+| `send_text` | `text` | Frame desktop clipboard; desktop must be open |
+| `send_file` | `path` | File on the HTTP server computer, up to 16 MiB, copied to Frame `~/Downloads` |
+| `panel` | `id` | Launch an installed Flatpak as a panel using the existing launcher |
+| `power` | `action`: `suspend`, `reboot`, `poweroff` | Open a terminal for the user to enter the sudo password |
+| `keep_awake` | `action`: `on`, `off`, `status` | Optional keep-awake script interface |
+
+Only install free software with its developer's consent. There is no purchase,
+entitlement bypass or arbitrary shell tool. `install` returns a background job
+ID; it does not claim the installation has finished. APK and sideloaded title
+installs remain in the main UI for now.
+
+### Approval is a separate human action
+
+Every mutation first returns an `approvalUrl`, exact action and `confirmation`
+token. Ask the user to open that URL and choose **Approve this action** or
+**Reject**. Then repeat the same tool and arguments with the token in
+`confirmation`. The server refuses execution before approval, changed arguments,
+expired tokens and reuse. A file approval binds the content hash as well as the
+path. Approvals last five minutes and disappear when the HTTP server restarts.
+A failed execution also consumes the approval; review a fresh request to retry.
+The panel does not execute an action merely because it was approved.
+
+MCP has no approval tool. This is protection against accidental model tool
+calls, not a sandbox against a client with independent shell/HTTP access to your
+computer. Grant the MCP client only the access you intend. Status, captures and computer-state observations
+are returned directly to that client, which may forward them to its configured
+model. The assistant's separate opt-in does not govern an external MCP client.
+
+Power still requires the existing password prompt in a local terminal. MCP
+never receives passwords. Power via `FRAME_LOCAL=1` is unsupported: use the main
+UI. The panel launcher and keep-awake adapter require zsh on the computer.
+
+[PR #16](https://github.com/saphid/frame-control/pull/16) owns
+`scripts/keep-awake.sh on|off|status`. This branch does not copy or change it.
+Until that script is present, the tool reports it unavailable. Keep-awake is
+never automatic: `on` changes the shared idle timers; explicitly approve `off`
+to restore them after work. It is not a per-agent lease; coordinate with other
+users. No changes are made to the analytics/update interfaces in
+[PR #17](https://github.com/saphid/frame-control/pull/17). Prompts, keys, model
+replies, screenshots and approval payloads are not sent to analytics.
+
+## Assistant panel
+
+Open **Settings** (the gear in the header) **→ Open assistant settings**, or `http://127.0.0.1:47810/assistant`.
+To put the same page in the headset, with the HTTP server still running:
+
+```sh
+python3 scripts/assistant-on-frame.py --port 47810
+```
+
+This starts an SSH reverse forward bound to Frame loopback (port 47812 by
+default), then a dedicated Chromium profile tagged as a SteamVR panel. Keep the
+command running. Ctrl-C closes this browser profile and the tunnel; it leaves
+other Chromium windows and the existing HTTP server alone. A failed cleanup
+prints the temporary profile path so it can be removed when the Frame returns.
+Use `--frame-port` if the default is busy. Chromium must already be available as
+`org.chromium.Chromium`; the launcher never installs anything automatically.
+Place the panel with SteamVR's normal docking controls.
+
+Enter your full **chat-completions endpoint**, model name and optional key.
+An OpenAI-compatible local server works without a key; no OpenAI account is
+required. HTTP is allowed only on loopback; other endpoints require HTTPS.
+Loopback refers to the computer running the HTTP server, even in the headset.
+Endpoints with embedded credentials, query strings or redirects are refused.
+
+Check the message consent box and press **Send message**. Screenshot context is
+a separate unchecked box and sends one fresh capture with that request. Both
+boxes reset after sending, and changing endpoint/model revokes consent. Nothing
+is sent when opening the page or entering configuration. There is no model
+list fetch, saved history, automatic screenshot capture or assistant telemetry.
+Each send is independent: previous messages and replies are not included.
+
+Configuration, credentials and chat remain in page memory; close/reload the page
+or choose **Clear everything** to clear them. A request already sent cannot be
+recalled. Only the chosen endpoint gets the request; proxy environment variables
+and redirects are disabled. Its privacy and retention policy still applies.
+Replies are plain text and cannot call tools or operate the Frame. A model must
+support image inputs to accept screenshot context.
+
+## Evidence and limits
+
+**Verified 2026-09-28, SteamOS 0.4.1, BUILD_ID 20260925.6191901:** loopback HTTP
+status through an SSH reverse tunnel; platform Chromium created a separate
+SteamVR panel (confirmed in `GAMESCOPE_FOCUSABLE_APPS`); headset capture returned
+a PNG. These checks preceded the UI implementation. No power or global settings
+were changed.
+
+**Inferred:** visual comfort and controller keyboard usability while wearing
+the headset; panel creation in gamescope alone does not establish these.
+Windows/Linux launcher support, live third-party model endpoints, installs,
+uninstalls, power and keep-awake changes are not covered by that feasibility
+check. See the PR for the final unit and end-to-end results.
+
+**Verified end to end on the same Frame/build (2026-09-28):** a stdio MCP client
+initialized, read status, retrieved a headset PNG, and transferred a test file
+only after approval through the Chromium page. Remote file bytes matched;
+reusing the confirmation was rejected. The actual headset Chromium page sent
+text and then separately opted-in image context to a local test endpoint and
+displayed its replies. Without consent there were zero endpoint requests.
+The test endpoint returned canned replies: model inference and a live external
+provider remain **unverified**. The launcher’s Ctrl-C cleanup was checked;
+profiles, SSH tunnels and the test file were removed. No installs, removals,
+launches of user games, power operations or keep-awake changes were performed.
+
+**Verified locally:** unit coverage includes the stdio subprocess, approval
+binding/expiry/replay/concurrency, file-change rejection, and a real local HTTP
+endpoint for opt-in, text/image payloads and redirect refusal. Fake-Frame
+regressions are in `tests/e2e/test_agents.py`; local Docker execution was blocked
+because the Docker daemon was unavailable. The ARM64 fake-Frame CI job passed
+on this branch (run 36421345682).
+
+**Verified on the same Frame/build:** both Ctrl-C and SIGTERM close the dedicated
+browser profile and SSH tunnel and remove the profile and panel log.
+
+**Verified end to end on the same Frame/build (2026-09-29), with mutations:**
+a stdio MCP client started `ui/frame_mcp.py` in its default mode (private
+backend, no API key, no prestarted server) and a human approved or rejected
+each change in the approval page in a real Chrome window:
+
+| Tool | Result on the Frame |
+|---|---|
+| `send_file` | Approved; the file arrived in `~/Downloads` with identical contents |
+| `install` | Approved; `io.github.fizzyizzy05.binary` job finished in about 35 s |
+| `panel` | Approved; gamescope listed a new panel window, and `computer_state` reported the same window ID and PID. The app rendered in that window (below) |
+| `launch` | Approved; Keep Talking and Nobody Explodes (341800) started under Proton and `computer_state` reported it as the focused app |
+| `uninstall` | Approved; app and locale removed |
+| `power` | Rejected in the page. Unapproved retries, the same token used for `uninstall`, and a retry after rejection were all refused. Nothing was powered off |
+| `send_text` | Approved, then refused because the Plasma desktop was not open (documented requirement) |
+| `keep_awake` | `status` reports the script unavailable until PR #16 lands |
+
+A separate Claude Code CLI session, with only this server configured, read
+status, `computer_state` and a headset capture, and requested an install. It
+received an approval URL and did not execute anything.
+
+The assistant opened as a Frame panel through `scripts/assistant-on-frame.py`.
+Against a loopback stub model, a send without consent made zero requests. With
+consent it made exactly one, carrying the text and a fresh Frame screenshot.
+Consent unticked itself after sending. SIGTERM removed the panel, profile, log
+and tunnel.
+
+**Not verified while unworn:** every headset capture was a uniform dark frame,
+so SteamVR's rendered view of panels and the game could not be checked; window
+captures (`xwd`) were used instead. MCP can launch a game or panel but has no
+tool to stop one: the tester stopped them over SSH. Removing an app leaves any
+runtime it pulled in; Flatpak may also remove related extensions when that
+runtime is removed by hand.
+
+![Approval page showing the exact install action](img/mcp-approval-install.png)
+
+![The installed Flatpak rendering in its own gamescope panel window](img/mcp-panel-binary.png)
+
+![Assistant in Frame Chromium, after an opted-in request to the local test endpoint](img/assistant-panel.png)
+
+## Computer-use coverage
+
+MCP is the tool transport, not a limit on what an agent can do. A screenshot,
+accessibility snapshot, click or keystroke can all be MCP tools when we have a
+reliable underlying implementation. See [the investigation](computer-use.md)
+for the verified boundaries. `computer_state` adds observation, not an input
+channel: it cannot click an approval button or send keyboard/mouse events.
+
+**Verified 2026-09-29, SteamOS 0.4.1, BUILD_ID 20260925.6191901:** the command saved
+by `codex mcp add` launched without a prestarted server, negotiated MCP, listed
+12 tools, read live Frame status and returned X11 window state plus AT-SPI
+observations. It exited 0 at EOF. Steam's accessibility tree had inaccessible
+children, reported as `incomplete: true`; this is not a complete actionable UI.

docs/android-backups.md

@@ -0,0 +1,57 @@
+# Import an Android game backup
+
+A SideQuest backup can contain a small APK and much larger `main.…obb` and
+`patch.…obb` files. All of them belong to the same game. Installing only the APK
+can leave the game unable to start because its assets are missing.
+
+In **Add / Install → Import Android game** (or **Apps → Browse → Import Android game**), choose the APK and its OBB files together.
+You can also drop them anywhere in the window. In the desktop app, dropping the
+APK alone finds matching OBB files beside it; dropping a folder containing the
+APK and OBBs also works. Browsers can read only the files you explicitly choose.
+
+The import screen shows the game app and its game-data files together. **Import
+game & data** installs the APK, starts its own Steam library instance, waits for
+Android and the installed package, copies the OBBs, and closes the game. Open it
+again from the Steam library to play. The screen explains this before import;
+choosing files alone never starts a game.
+
+Files are matched using the package inside the APK and the standard
+`main|patch.<version>.<package>.obb` name, not the APK's filename. Both main and
+patch files are preserved. OBB version numbers need not equal the APK's current
+version code: updates can reuse older expansion files. The copy uses the existing
+SHA-256 transfer check inside Android and writes to that game's own
+`/sdcard/Android/obb/<package>` folder.
+
+If no data files are selected, the screen reminds you to include any OBBs in the
+backup before offering **Install game app**. An APK cannot reliably tell Frame
+Control whether separate expansion files are required. Game-data files are never
+silently sent to Downloads by this flow.
+
+If setup fails, the import screen keeps the error and retry instructions visible.
+The APK may already be installed, but the game is not reported ready. Import the
+same backup again, or choose just its OBB files to add data to an existing install.
+The importer checks the installed package and version before writing data and
+closes the instance after a failed copy. Unrelated or duplicate files, running
+games that would be replaced, and downgrades are rejected. Uploaded staging files
+are discarded after use or cancellation; abandoned imports expire after an hour
+when the importer is next used, and dead-server staging folders are swept at
+startup.
+
+This flow handles one ordinary APK and standard OBB files for one game at a time.
+Split APKs, XAPK/APKS archives, nested Android/data folders and private save
+archives need their own import handling. PC ZIP/folder/EXE imports keep their
+existing route. Quest USB and Meta library imports keep their existing workflow.
+
+Validation covers actual APK parsing, the three-file backup layout, package
+matching, sibling discovery, browser upload staging and cleanup, instance/version
+guards and failure recovery with mocked headset operations. Browser verification
+uses the real page and upload/inspection endpoints with simulated installation.
+**Verified 2026-10-20 on a real Steam Frame**, BUILD_ID `20260925.6191901`:
+F-Droid Basic 2.0.2 with two synthetic main/patch OBBs completed the automatic
+install/start/copy/close sequence. Reopening its persistent instance confirmed
+both SHA-256 hashes in `/sdcard/Android/obb/org.fdroid.basic`. The test app,
+shortcut and instance were removed afterward, the shared device lock was
+released, and the battery remained at 99%. See [device evidence](evidence/android-import/device.json).
+The headset was unworn; this checks transfer and persistence, not rendering,
+Resident Evil 4 gameplay, or a game that exits before data can be copied. This
+flow does not change APK compatibility or remove licence checks.

docs/announcements.md

@@ -0,0 +1,144 @@
+# Announcing changes
+
+How we tell people about Frame Control features and fixes as they merge. The
+same few sentences feed the X post, the release notes and the website, so they
+are written once, in the pull request, while the change is fresh.
+
+## What gets announced
+
+| Kind | Announce? | Example |
+|---|---|---|
+| **New** — something you can now do | Yes, its own post | Stream Mac windows into the Frame as panels |
+| **Better** — something existing got noticeably easier, faster or wider | Yes, its own post or a roundup | APKs install without the Android SDK |
+| **Fixed** — something broken that users hit | Yes if people reported it or it blocked a flow; otherwise the next roundup | Mac mirror showed a zoomed-in corner |
+| **Release** — a tagged build | Always, one post linking the release | Frame Control 0.3.1 |
+| Tests, refactors, CI, docs-only, website polish | No | Fake Frame tests, screenshot crop |
+
+If a change isn't worth a sentence to someone who owns a Frame, it isn't
+announced.
+
+## The voice
+
+Write it the way the README and release notes already read.
+
+- **Lead with what the person can now do**, in their words: "Install older
+  versions of an app when the newest won't run on the Frame", not "Add APK
+  version fallback resolver".
+- **Plain and specific.** Name the thing, give the number: "about 30 fps",
+  "4,500 apps", "up to 8 older versions". No "blazing", "game-changing",
+  "excited to announce", "huge", or exclamation marks.
+- **Say where it works.** Platforms and what it was tested on, briefly:
+  "Tested on a real Frame from macOS 27." Don't claim what wasn't tested.
+- **Say the catch.** If it needs a setup step, an unsigned build, or only works
+  on one OS, say so in the same post.
+- **Sentence case**, full sentences, British spelling to match the docs.
+  Contractions are fine.
+- **No emoji in the text.** One image, GIF or short clip carries the tone
+  instead. The only symbol is the kind label below.
+- **Unofficial, always.** Never imply Valve made or endorses it. Say "Steam
+  Frame" for the headset and "Frame Control" for the app.
+- **Credit people.** If a user reported the bug or suggested the feature and is
+  happy to be named, thank them by handle.
+
+## The formats
+
+Every announceable PR ends with an `## Announcement` section holding these.
+The reviewer checks it like code.
+
+### 1. The post (X, and any other social account)
+
+```
+<Kind>: <what you can do now, one sentence>
+
+<one or two sentences: how it works, the catch, or what it was tested on>
+
+<link>
+```
+
+- `<Kind>` is `New`, `Better` or `Fixed`.
+- 280 characters maximum including the link (X counts any link as 23).
+- One link: the release if it has shipped, otherwise the PR.
+- One visual when the change is visible: a screenshot from the app, a GIF, or a
+  short clip from the headset. Alt text describes what it shows.
+- No hashtags, except `#SteamFrame` on releases and on posts about something
+  new, because people search for it.
+
+### 2. The release-note line
+
+One bullet under **New in x.y.z**, same as the current release notes: the
+first half of the post's first sentence, no kind label, no link.
+
+### 3. Release post
+
+```
+Frame Control <version>: <the headline change>
+
+<one sentence on the headline change>. Also: <two or three short items>.
+
+Windows, macOS and Linux: <release link>
+#SteamFrame
+```
+
+The release title on GitHub uses the same `Frame Control <version>: <headline>`
+line, as 0.3.0 and 0.3.1 already do.
+
+### Roundups
+
+Small fixes that don't earn their own post wait for a roundup, posted with the
+next release or when three or more have piled up:
+
+```
+Fixed in Frame Control this week:
+- <fix>
+- <fix>
+- <fix>
+
+<link>
+```
+
+## Examples from what has already merged
+
+**#11, older APK versions**
+
+```
+New: when an Android app is too new for the Frame, Frame Control now offers
+older versions that will install.
+
+It checks F-Droid, its archive and IzzyOnDroid, and verifies each download
+before it goes on the headset.
+
+https://github.com/saphid/steam-frame/pull/11
+```
+
+**#8, Mac mirror fixes**
+
+```
+Fixed: mirroring your Mac into the Steam Frame now fits the whole desktop in
+the panel, asks for the right password, and shows the cursor.
+
+Tested end to end on a real Frame from macOS 27.
+
+https://github.com/saphid/steam-frame/pull/8
+```
+
+**v0.3.1**
+
+```
+Frame Control 0.3.1: install APKs without the Android SDK
+
+Frame Control now reads APK files itself, so there's nothing extra to install.
+Also: Linux and Windows game sideloading, and one-click install links.
+
+Windows, macOS and Linux: https://github.com/saphid/steam-frame/releases/tag/v0.3.1
+#SteamFrame
+```
+
+## Posting
+
+Nothing is posted without a person approving it. The flow is:
+
+1. The PR carries its `## Announcement` section.
+2. On merge, the post is drafted from that section (manually for now).
+3. Alex approves or edits it, then it's posted from the project account.
+4. Replies and questions that turn out to be bugs become GitHub issues labelled
+   `feedback`, same as the website form.

docs/apk-repos.md

@@ -0,0 +1,197 @@
+# APK repositories
+
+Frame Control supports **F-Droid-format repositories**, including F-Droid,
+F-Droid archive, IzzyOnDroid and user-provided HTTPS repositories. Repository
+indexes are authenticated before their apps appear. Search lists builds with
+Android API ≤30 and arm64-v8a or no native libraries, using the same streaming
+reducer as the existing catalogue. This does not guarantee an app works in Lepton.
+
+## Formats considered
+
+| Format | Users and purpose | Support in this source |
+|---|---|---|
+| F-Droid v2 | F-Droid, IzzyOnDroid, self-hosted fdroidserver repositories; consumed by F-Droid clients including Droid-ify and Neo Store | Preferred: signed `entry.jar` authenticates `entry.json`; its SHA-256 authenticates `index-v2.json`, which supplies APK SHA-256 hashes |
+| F-Droid v1 | Older F-Droid servers and clients | Fallback: verify `index-v1.jar`, then read its signed `index-v1.json` |
+| Obtainium configurations / exports | Obtainium users share app URLs plus source-specific filters and update settings; exports can contain a list of app configuration objects | Not imported here: configurations describe how to find releases, not one signed repository index |
+| SideQuest listings / custom feeds | SideQuest's own app discovery and installation service | No interoperable signed custom-repository specification was established from the public project documentation examined; SideQuest needs its own adapter |
+| GitHub release lists | Developers publish APK assets on release pages; community lists link to projects | Not a repository standard: asset naming, build selection and publisher verification vary; handled separately from this F-Droid source |
+| Minimal JSON list | A private list could contain package, title, APK URL and SHA-256 | Deliberately not introduced: unsigned hashes downloaded alongside files do not authenticate their publisher; another bespoke signing/update protocol would duplicate F-Droid |
+
+Research references (checked 2026-09-28):
+
+- [F-Droid APIs](https://f-droid.org/docs/All_our_APIs/) and
+  [repository setup](https://f-droid.org/docs/Setup_an_F-Droid_App_Repo/).
+- [F-Droid signing keys](https://f-droid.org/docs/Release_Channels_and_Signing_Keys/)
+  and [IzzyOnDroid's repository page and fingerprint](https://apt.izzysoft.de/fdroid/).
+- [Droid-ify](https://github.com/Droid-ify/client) and
+  [Neo Store](https://github.com/NeoApplications/Neo-Store).
+- [Obtainium](https://github.com/ImranR98/Obtainium), its
+  [configuration/deep-link format](https://wiki.obtainium.imranr.dev/deep_links/),
+  and [community app configurations](https://apps.obtainium.imranr.dev/).
+- [SideQuest's public client](https://github.com/SideQuestVR/SideQuest).
+  The absence of a specification in these materials is not proof that no
+  historical or private custom-feed format exists.
+
+## Add a repository in Frame Control
+
+From the Frame Control checkout, use its source-management CLI:
+
+```sh
+python3 ui/apk_sources/fdroid.py add 'https://example.org/fdroid/repo?fingerprint=YOUR_64_HEX_CERTIFICATE_FINGERPRINT' --name 'My apps'
+python3 ui/apk_sources/fdroid.py list
+python3 ui/apk_sources/fdroid.py search SOURCE_ID 'music'
+python3 ui/apk_sources/fdroid.py download SOURCE_ID org.example.app
+python3 ui/apk_sources/fdroid.py remove SOURCE_ID
+```
+
+Replace `SOURCE_ID` with the `id` printed by `add` or `list`. `--fingerprint`
+can also supply the pin. `fdroidrepos://example.org/fdroid/repo?fingerprint=…`
+links are accepted and converted to HTTPS. Conflicting fingerprints are refused.
+A URL must identify the repository directory, not its website or an index file.
+
+Adding fetches and validates the complete index **before saving** the source.
+Without a fingerprint, Frame Control verifies the JAR signature and remembers
+its signer: trust on first use (TOFU). This establishes continuity with the
+first server response, not independent publisher identity. Obtain the published
+fingerprint through a trusted channel when possible; the store's Add a source
+form shows the pinned one ("Trusted on first use: …") so you can compare it.
+Re-adding an existing URL preserves its pin; changing it requires deliberately
+removing and re-adding it.
+
+### Repositories behind a login
+
+Some self-hosted repositories sit behind HTTP basic auth. As in F-Droid's own
+client, the login can be part of the address
+(`https://user:pass@example.org/fdroid/repo`), or given separately: in the
+store's **Add a source** form under "This repository needs a login", in the
+server API (`username` and `password` beside `url`), or on the command line,
+where the password is read from standard input so it stays out of shell history
+and `ps`:
+
+```sh
+printf '%s\n' "$PASSWORD" | python3 ui/apk_sources/fdroid.py add 'https://example.org/fdroid/repo' --username me --password-stdin
+```
+
+How the login is kept and used:
+
+- **Kept out of the address.** The `user:pass@` part is removed before anything
+  is saved, so the saved repository URL, its id, the source list, job results
+  and the page never contain it. The store only says "Uses a login".
+- **Stored separately.** Logins live in
+  `frame_host.data_dir('source-credentials.json')`
+  (`~/Library/Application Support/Frame Control/source-credentials.json` on
+  macOS), written with mode 0600 and keyed by source id. They are stored in
+  plain text there, protected by file permissions only (on Windows,
+  the folder's normal ACLs). Removing the repository deletes its login, and
+  the file goes when the last login is removed. Each change holds a lock
+  file (`source-credentials.lock`), so the app and the command line can't undo
+  each other's saves or removals.
+- **HTTPS only.** An `http://` address with a login is refused before any request.
+- **Inside the repository only.** The `Authorization` header is decided
+  separately for every request, redirects included: index, `entry.jar`,
+  APKs and the store's artwork proxy. It is sent only when the request's
+  scheme, host and port match the repository's and its path is inside the
+  repository's directory by whole path segments. A redirect to another host
+  or port, or to another path on the same server, gets no login, and that
+  request's own `Authorization` header is removed. Paths with `.` or `..`
+  segments (plain or percent-encoded), encoded `/` or `\`, double encoding
+  or `;` get no login, since a server could normalise them to a path
+  outside the repository. Index file names like that are refused outright.
+- **Never echoed.** Logins are not written to logs, error messages, API
+  responses or the cache. The CLI prints only the saved source.
+- **Checked before saving.** As with any repository, the whole index must
+  download and verify before anything is saved. HTTP 401 (or 403 when a login
+  was sent) stops the add with "check the username and password" and saves
+  nothing: no repository, no login, no rollback state. A 403 with a login is
+  not treated as rate limiting.
+- **Same verification.** The login changes only who may download. Signature,
+  fingerprint pin or TOFU, index hash and rollback checks apply exactly as for
+  any other repository.
+
+Re-adding the same address with a new login replaces the saved one. Re-adding
+it without a login keeps the saved one.
+
+The API for the search/server integration is in `ui/apk_sources/fdroid.py`:
+`add_repo(url, fingerprint=None, name=None, username=None, password=None)`, `remove_repo(source_id)`,
+`set_enabled(source_id, enabled)`, and `user_repos()`. The module also exposes
+`sources`, `search`, `details`, and `download` from the shared source contract.
+This change supplies the CLI and API; the integrated source-management UI is
+separate work. Built-in sources can be disabled but cannot be removed.
+
+Settings and pins live in `frame_host.data_dir('apk-repos.json')`
+(`~/Library/Application Support/Frame Control/apk-repos.json` on macOS).
+Authenticated reduced indexes and APKs live under
+`frame_host.cache_dir('apk-sources')`; indexes refresh after 24 hours. An
+expired index is still served (marked stale in the store) while it refreshes in
+the background; a failed refresh is retried after 10 minutes.
+Only the running Frame Control app prunes cached APKs (at start and after store
+downloads); the command-line tools never do.
+The existing catalogue's unverified index cache is never treated as authenticated.
+
+Rollback protection: each repository's newest accepted signed index timestamp
+is kept in `apk-repo-state.json` next to the settings, and an older index is
+refused. Once a repository has served a v2 `entry.jar`, a missing `entry.jar`
+is an error rather than a reason to fall back to `index-v1.jar`. `entry.jar`
+must be signed with SHA-2 (SHA-1 is still accepted for legacy `index-v1.jar`).
+Removing a repository clears its state.
+
+## Publish your own repository
+
+Only publish free APKs you own or have the developer's permission to distribute.
+Do not publish paid app mirrors or bypass store licences. Check distribution
+terms before adding someone else's repository; this module does not infer legal
+permission from a signature or automatically audit a repository's terms.
+
+Install a current [fdroidserver](https://f-droid.org/docs/Installing_the_Server_and_Repo_Tools/)
+and its documented Android/Java dependencies on the publishing machine, then:
+
+```sh
+mkdir my-fdroid
+cd my-fdroid
+fdroid init
+# Set repo_url in config.yml to https://example.org/fdroid/repo
+# Also set repo_name and repo_description; keep the generated signing key safe.
+cp /path/to/your-free-app.apk repo/
+fdroid update --create-metadata
+# Review the generated metadata (name, summary, licence, source and website).
+fdroid update
+```
+
+Serve the generated **repo directory** at that HTTPS URL, including APKs,
+icons, `entry.jar`, `index-v2.json` and `index-v1.jar`. Do not publish the
+private signing keystore or configuration passwords. Configure fdroidserver's
+`serverwebroot` and run `fdroid deploy` for managed publication, or copy the
+public directory with your existing deployment tool. Publish the SHA-256
+repository certificate fingerprint displayed by fdroidserver in a link such as
+`https://example.org/fdroid/repo?fingerprint=…`.
+
+Keep the repository signing key backed up: changing it breaks existing pins.
+For updates, add the new APK, edit metadata as needed, run `fdroid update` and
+publish again. Test the published URL with Frame Control's `add`, `search` and
+`download` commands. The above publisher setup is documented from fdroidserver;
+it was not executed as part of this implementation.
+
+## Verification and limits
+
+The stdlib verifier supports one RSA PKCS#1 v1.5 JAR/CMS signer with a key of
+2048–8192 bits; SHA-256/384/512 and legacy SHA-1 digest encodings are
+recognized. It checks the signer certificate pin, the signature over `.SF`,
+the whole-manifest digest, and the manifest's digest of the JSON member.
+ECDSA, DSA, RSA-PSS, multiple signers and section-only `.SF` manifests are
+rejected. Certificates are pinned identities, not validated as Web PKI chains.
+HTTPS certificates are separately checked by Python's normal TLS validation.
+
+v1 fallback occurs only when `entry.jar` returns HTTP 404 or 410. Signature,
+fingerprint, index hash, TLS and server errors never trigger an unsigned
+fallback. APKs are cached by SHA-256 and checked again before reuse. Here,
+`verified: true` means the bytes match the signed repository's APK hash; it
+is not an independent APK publisher-signature or runtime compatibility verdict.
+There is no repository timestamp rollback/expiry policy or automated signing-key
+rotation yet. An old correctly signed index can still validate.
+
+Offline fixtures exercise v2, v1, TOFU, pin changes, disabled sources, cache
+reuse, URL rejection and corruption of every signature/hash layer. On the Mac,
+the real IzzyOnDroid repository was added with its published pin, searched for
+Tiny Music Player, and its 16,520-byte APK downloaded with SHA-256
+`d7bcb24d101b04beb3394b695b24be4e2c3d6ed702f1d0e06bc4dd707f64d86a`.
+No headset connection or installation was performed.

docs/apk-sources.md

@@ -0,0 +1,116 @@
+# Developer-consented APK sources
+
+Surveyed 2026-09-28. Free access is not proof of redistribution permission or
+Frame compatibility. These adapters fetch only public publisher releases or
+link to publisher pages. They do not acquire store entitlements, defeat access
+checks, install anything, or rehost APKs. See [VR compatibility](vr-apks.md).
+
+| Source | Developer consent and automated-access position | API/feed; VR coverage | Decision |
+|---|---|---|---|
+| [itch.io](https://itch.io/docs/legal/terms) | Publishers warrant distribution rights (§4). Users may access content through the service; this is not blanket scraping permission. Main robots excludes `/game/download/`; author subdomains exclude `/*/download/`. No challenge bypass. | Public free Android RSS for `openxr` and `oculus-quest`; substantial indie VR. Server API is mostly authenticated publisher/account functionality, not a general anonymous store-download API. | Implement RSS search, artwork and page links; `downloadable: False`. The supplied free-download script follows keyed download pages excluded by robots, so it is not shipped. |
+| [GitHub releases](https://docs.github.com/en/rest/releases/releases) | Maintainers publish assets; curated repositories below establish provenance. Public hosting or an open-source topic alone does not establish rights to every uploaded binary. Use supported REST API under [API terms](https://docs.github.com/en/site-policy/github-terms/github-terms-of-service#h-api-terms), not HTML crawling. | Releases API includes APK assets and sometimes SHA-256. Topic search finds OpenXR/Quest projects. 60 unauthenticated requests/hour; authenticated user limits are generally 5,000/hour, with separate search/secondary limits. | Implement curated downloads and explicit topic discovery. Unreviewed topic results are page-only. |
+| [Uptodown](https://www.uptodown.com/aboutus) | Developer distribution program exists, but that does not prove publisher authorization for every catalog item. [Privacy policy](https://www.uptodown.com/aboutus/privacy) explicitly describes protection against automated access. General automation permission was not established. | Broad Android catalog, limited VR focus; no supported public consumer-download API established in this survey. | Page links only; no downloader. Do not infer consent from an unchanged APK signature. |
+| [APKPure](https://apkpure.com/terms) | Third-party APK catalog; individual publisher consent and automation rights were not established. Terms request returned HTTP 403; no bypass attempted. | Broad Android coverage, incidental VR; internal endpoints are not permission to automate. | Exclude automatic indexing/downloading; user may open site. |
+| [APKMirror](https://www.apkmirror.com/faq/) | Publisher-signed files and a free-app policy are not a blanket developer-consent or automation grant. FAQ request returned HTTP 403, so current terms could not be confirmed. | General Android/version archive; APK bundles often need another installer; little VR focus. No supported consumer-download API established. | Page links only, no scraping or bundle conversion. |
+| [Aptoide](https://en.aptoide.com/company/legal) | Terms define an app supplier as developer, owner or authorized distributor; user stores still require per-item provenance. API availability alone does not settle third-party access rights. | API ecosystem and general Android catalog; weak VR focus. | Defer until a publisher-owned store and its API terms can be approved. No blanket community-store downloader. |
+| [Amazon Appstore](https://developer.amazon.com/docs/app-submission/understanding-submission.html) | Official developer submissions; store account, device and license rules apply. Publisher submission APIs do not authorize public binary extraction. | Fire-device distribution; Android-device Appstore support ended in 2025; little Quest relevance. | Official product links only; no account or entitlement extraction. |
+| [PICO / ByteDance store](https://developer.picoxr.com/document/distribute) | Official publisher channel with store/device entitlements. No public unauthenticated binary-download grant established; documentation request encountered a redirect error. | Strong standalone VR; PICO builds may depend on PICO services/extensions. | Store links only. A developer's independently published GitHub/itch build can qualify separately. |
+| [Meta Horizon Store / former App Lab](https://www.meta.com/experiences/) | Official developer submissions. A free store entitlement is still an entitlement; no license bypass or authenticated store extraction. App Lab was folded into the main store in 2024. | Strongest Quest coverage; no supported anonymous APK-download API established. | Store links only; independently distributed free builds use their publisher source. |
+| [Khronos samples](https://github.com/KhronosGroup/OpenXR-SDK-Source) | Official upstream, Apache-2.0 sample; developer-published release APKs. GitHub API terms apply. | `hello_xr` Vulkan/OpenGL ES APKs; excellent OpenXR diagnostics. | Included in GitHub curated list, Vulkan variant selected. |
+| [Meta OpenXR samples](https://github.com/meta-quest/Meta-OpenXR-SDK) | Official upstream; check each sample's license. Source availability does not imply a published APK, and some samples require Meta extensions/services. | Source/build examples, inconsistent ready-made APK releases. | Link to upstream; add specific free APKs only after release/provenance review. |
+| [Godot XR demos](https://github.com/GodotVR/godot-xr-tools) | Official project source and publisher demo pages; licenses and dependencies vary by demo. | OpenXR examples on GitHub/itch. Older Godot builds can fail on Lepton's missing clipboard service. | Covered by source discovery; no compatibility promise from an OpenXR tag. |
+
+The table distinguishes observed restrictions from unknown permission. An
+unverified policy is a reason to defer automation, not a claim that a site is
+unlawful. Only the two implemented source kinds are registered by their own
+`sources()` functions; the other rows are recommendations, not new UI entries.
+
+## Adapters
+
+`ui/apk_sources/github.py` uses `github_curated.json`: Khronos `hello_xr`,
+[Open Brush](https://github.com/icosa-foundation/open-brush), and
+[SuperTux 3D](https://github.com/SgtBilko76/SuperTux-3D). These have official
+OpenXR project/release evidence, not a blanket claim of headset compatibility.
+Open Brush's compatibility evidence is recorded in [vr-apks.md](vr-apks.md).
+Open Brush and SuperTux publish the selected builds as prereleases; curated
+opt-ins preserve that label in version records. Exact APK filename patterns
+avoid downloading desktop archives or alternate non-Quest builds.
+[OpenSaberPlus](https://github.com/arpruss/OpenSaberPlus) was examined but not
+curated: GitHub reports its license as `NOASSERTION`, and current OpenXR APK
+provenance was not established in this pass.
+
+Default GitHub search is offline against this small list. Queries
+`topic:openxr`, `topic:oculus-quest`, and `topic:quest` explicitly call repository
+search. Results outside the curated list stay page-only, even if a repository
+claims an open-source license. This prevents an arbitrary tagged mirror from
+becoming a trusted downloader. Extend the curated JSON after provenance review.
+
+For a higher API quota, add a GitHub access token in the store's source
+settings (the GitHub row's token field) or through the server API
+(`POST /api/sources` with `action: "set-token"` or `"clear-token"` and
+`source: "github"`). `FRAME_GITHUB_TOKEN` in the process environment still
+works and wins over a saved token. A saved token is kept with repository
+logins in `source-credentials.json` (mode 0600, see
+[APK repositories](apk-repos.md#repositories-behind-a-login)). The source list
+reports only whether a token is set, where it came from and whether GitHub
+rejected it, never its value. Tokens are sent as `Authorization: Bearer` only to
+`api.github.com`, never written to the cache, never sent to asset hosts (public
+release downloads don't need them), and removed on redirects. If GitHub answers
+401 to the token, the request is retried once without it, as Obtainium does.
+The rejection is logged without the token and shown in source settings. The
+token is not tried again until it is saved again or the app restarts. Rate-limit
+backoff is kept per login (anonymous, or each token), so saving a token after
+anonymous requests were limited lets the next request go out with it. The
+adapter does not read `gh` credentials automatically. Metadata is cached for one hour under
+`frame_host.cache_dir('apk-sources', 'publisher')`. A cold details request
+fetches at most ten releases. Rate-limit errors are surfaced without retry
+loops. Asset IDs and release tags are not Android version codes: metadata
+leaves the latter unknown and rejects a requested `version_code` rather than
+silently fetching a different build.
+
+`itch.py` exposes separate OpenXR and Quest feed sources, so one feed's failure
+does not suppress the other at the aggregator level. Queries filter the current
+feed window locally: this is not an exhaustive historical itch search. Only
+explicit zero-price Android entries are returned. Covers are exposed in
+`images`; absent screenshots, APK version, ABI and minimum SDK stay unknown.
+Curated GitHub entries include publisher artwork and plain-language summaries.
+Repository image URLs are pinned to inspected commits. Open Brush screenshots
+come from its README-linked Steam listing; SuperTux uses the upstream gameplay
+preview embedded in the port's README (not a headset capture). The hello_xr
+sample has a launcher icon and GitHub social banner; no published screenshot
+was found in the inspected repository/README, so its screenshot list is empty.
+Uncurated topic results use the owner's avatar and GitHub's repository social
+preview. These are repository placeholders, not app screenshots. Itch's recorded
+RSS includes only covers, so screenshot lists remain empty without page scraping. VR is
+based on curated evidence or a VR-specific feed/topic, not a compatibility claim.
+
+Downloads stream to unique temporary files, require an APK manifest entry,
+restrict HTTPS origins and redirects, and enforce a 2 GiB ceiling. `verified`
+means the downloaded SHA-256 matches GitHub's published digest. Without such a
+digest, the computed SHA-256 is returned with `verified: False`; neither value
+claims publisher-signature validation. Installation must inspect the APK as
+usual. OBBs, split APKs, paid assets and external release-body download links
+are unsupported.
+
+## Evidence and limits
+
+On this Mac, Python 3.9 downloaded the real Khronos Vulkan 1.1.63 APK through
+the GitHub adapter, matched its published SHA-256
+`f24bbe8ba6f6339fca658628868ba8189cbc33390d6ac508f69d76fb67b5fa34`, and
+`python3 ui/frame_android.py info <apk>` exited 0: package
+`org.khronos.openxr.hello_xr.vulkan`, version code 1063, minimum API 24,
+arm64-v8a present, OpenXR detected. No Frame connection or installation occurred.
+
+The itch OpenXR RSS was fetched successfully and recorded as a fixture.
+Subsequent live adapter search encountered HTTP 429; it is not claimed as a
+successful live end-to-end search. Fixture search finds Off Nominal and parses
+nine Android entries from the ten-item feed (one has only an HTML platform).
+A real itch download and APK inspection were deliberately not performed:
+robots restrictions take precedence over that requested proof. No current
+policy text is claimed verified where the table records failed access.
+
+Tests use recorded, reduced API/RSS fixtures with network access blocked in
+the new test class. They cover selection, prereleases, unknown topic results,
+paid/non-Android exclusion, URL restrictions, redirect credential removal,
+caching, rate limits, checksum mismatch, non-APK rejection and partial-file
+cleanup. See `.claude/NOTES-more-sources.md` for commands and local evidence.

docs/apks.md

@@ -5,6 +5,12 @@ in **Lepton**, Valve's Waydroid-based container. Lepton is built for games,
 not general Android use
 ([GamingOnLinux](https://www.gamingonlinux.com/2026/09/lepton-from-valve-to-run-android-games-on-linux-is-now-open-source/)).
 
+**VR streaming clients:** WiVRn 26.9 and ALVR 20.14.1 install, but both fail
+OpenXR instance creation on the checked Frame because its Android runtime lacks
+`XR_KHR_convert_timespec_time` (**verified** 2026-09-28, SteamOS 0.4.1,
+BUILD_ID 20260925.6191901). They are not Frame Control dependencies. See
+[the feasibility results and options](linux-vr-streaming.md).
+
 ## Install from the Mac: one app, one Lepton instance (verified 2026-09-25)
 
 Use Frame Control's **Android apps** section (search, Install, Test, Report), drop
@@ -33,6 +39,12 @@ section below), instead of going into Lepton Development:
    run at once alongside Lepton Development, each in its own container
    (`lepton-steamlaunch-<id>`, ADB on 5556, 5557, …).
 
+Split APKs (a base plus `split_*.apk` files) install as one app:
+`python3 ui/frame_android.py install base.apk split1.apk …`. Lepton runs one
+APK, so splits that add native libraries or assets are merged into the base
+and re-signed; density and language splits are refused. See
+[quest-import.md](quest-import.md#split-apks). Not yet tried on a real Frame.
+
 Verified with AntennaPod and Tabletop Tools: installed in about 7 s, launched
 from the shortcut, stopped, and relaunched with their data intact. ADB and
 Lepton Development aren't involved.
@@ -46,6 +58,33 @@ Lepton Development must be installed once. Over SSH,
 `ssh frame 'steam steam://install/3056000'` queues it, but the install still
 needs to be confirmed or started in the headset.
 
+## When an app needs a newer Android
+
+Lepton is Android 11 (API 30), with arm64-v8a only. If Frame Control refuses
+an APK, it shows compatible versions from F-Droid's main and archive repos and
+IzzyOnDroid. It shows at most eight version names, newest first, preferring an
+arm64-only build, and says how many compatible builds it found in total.
+Each index is reduced to its compatible builds once a day and cached (about
+16 MB). The first lookup takes about 30 s and 100 MB of memory; later ones are
+instant.
+Choose **Install** to download a listed version, verify its SHA-256 against
+the index, and install it as its own app.
+
+You can also inspect a file or look up a package from the command line:
+
+```sh
+python3 ui/frame_android.py info some-app.apk
+python3 ui/frame_android.py versions some-app.apk
+python3 ui/frame_android.py versions org.example.app
+```
+
+The search links open APKMirror, APKPure, Uptodown, F-Droid and GitHub. Pick a
+version whose minimum is Android 11 or lower and that has an arm64-v8a build
+(or no native code). Frame Control does not fetch APKs from those search sites.
+Older versions may lack fixes, and being installable does not guarantee an
+app will run: see the missing services below. Android may refuse a downgrade
+or an update signed by a different publisher; removing the app deletes its data.
+
 ## Installed apps disappear when Lepton Development closes (verified 2026-09-25)
 
 Lepton Development runs in a throwaway "dev" context. When it exits for any
@@ -144,6 +183,92 @@ See
 [compat-db/README.md](../compat-db/README.md) and
 [apk-catalog/README.md](../apk-catalog/README.md).
 
+## Store and Library in Frame Control
+
+The Android tab has two views. **Store** finds apps across the sources (F-Droid,
+IzzyOnDroid, curated GitHub releases, itch.io). **Library** shows the apps on the
+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
+F-Droid's own categories decide, the finer one first (an app in *Multimedia* and
+*Social Network* is Web & chat).
+
+Apps built around a phone are hidden from browsing unless **Show phone-only
+apps** is on; a search always finds them, labelled *Phone app*. Hidden: apps in
+a category that only makes sense in a phone's own system (launchers, keyboards,
+wallpapers, Xposed modules), apps in a phone-side category (calls and SMS, VPNs,
+fitness, alarms, system tools) unless a useful category says otherwise
+(FluffyChat is in Phone & SMS, but it's a messenger), apps named for a phone
+part (a widget, a launcher, a battery tool), and apps that need hardware the
+Frame lacks (an IR blaster, a watch, NFC, root). They would install and run in
+Lepton, but do nothing useful on the Frame. In the October 2026 indexes that is
+about 1,600 of F-Droid's 4,500 apps and 550 of IzzyOnDroid's 1,300.
+
+Without a search, each source offers its best 300 for the chosen category:
+apps with a banner first, then with screenshots, then the newest.
+
+## The store in the headset: Frame Control's store as a panel (inferred, not yet run on the Frame)
+
+The **APK Store** panel is the Store above, drawn for the laser: the same
+sources, categories and artwork, with Install, Open, Stop and Remove, opened as
+its own floating panel:
+
+```sh
+scripts/store-on-frame.sh open     # copy the server over if it changed, start it, open the panel
+scripts/store-on-frame.sh close
+```
+
+`open` copies the same bundle the iPhone app uses
+(`ios/scripts/make_frame_bundle.py`) to
+`~/.local/share/frame-control/store-server/<version>` on the Frame. It then
+starts `ui/server.py` there with `FRAME_LOCAL=1` on `127.0.0.1:47812`, with a
+fresh `X-Frame-UI` key. Chromium XR (or the `org.chromium.Chromium` Flatpak)
+opens `/store` (`ui/store.html`) in a 1280×800 app window, tagged as panel
+`2001947812` ([panels.md](panels.md)). Downloads, SHA-256 checks and installs
+all run on the Frame, so the Mac can go away after `open`.
+
+The page has a category rail (Home, the store's categories, Installed), eight
+art cards a page, and a featured VR app on Home. It turns pages instead of
+scrolling, because a tagged panel gets mouse clicks and a drag would select
+text; the thumbstick (a mouse wheel) turns pages, and an on-screen keyboard is
+there for search. **Checked on the Mac only** (2026-10-14, 1280×800, against
+the real sources): Home, categories, Installed, the detail sheet. **Still to
+check in the headset:** that the panel opens and takes laser clicks, that an
+install completes when run on the Frame, and that **Open** brings up the app's
+panel.
+
 ## In-headset app store: F-Droid 1.17 (verified 2026-09-25)
 
 F-Droid 1.23 uses an old Compose and crashes on launch. **F-Droid 1.17.2**, the
@@ -298,3 +423,57 @@ because gamescope scales Lepton's surface to fit the same panel. Also unverified
 whether the settings survive the app or its Lepton instance relaunching.
 Lepton Development rebuilds its Android data on exit, so there they probably
 don't.
+
+## Expansion files and save backups
+
+SideQuest-inspired CLI helpers install local OBB files into an already-running
+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 +1,207 @@
+# 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. That test used the production
+CLI rather than clicking the desktop button.
+
+Later on 2026-10-24, the published **v0.4.17 Linux x86_64 AppImage** passed the
+literal packaged-button check on the same Frame/build. With the shared lock and
+a verified three-minute rollback timer, the headset entered full Plasma Desktop
+Mode. In the packaged Electron window, **Tools → Backup & recovery → Check**
+reported Desktop Mode despite gamescope. A trusted automated pointer click on
+the visible **Return to Game Mode** button, accepting its confirmation, returned
+`switched: true` and `steamosctl switch-to-game-mode`. The systemd targets then
+confirmed Game Mode. A second confirmed button click returned `switched: false`;
+the Game Mode service invocation and SteamVR PID stayed unchanged. **Check**
+then reported Game Mode and disabled Return. The test app/server and virtual
+display were stopped; the timer and shared lock were removed. Steam and SteamVR remained running
+at 99% battery. [Commands, responses, cleanup and limits](evidence/return-game-mode-packaged-2026-10-24.json),
+[before](evidence/return-game-mode-packaged-2026-10-24-before.png) and
+[after](evidence/return-game-mode-packaged-2026-10-24-after.png).
+
+This used the unchanged extracted AppImage payload with its bundled Python on
+Xvfb (`--no-sandbox --disable-gpu`), following the packaged Export test in #156.
+FUSE mounting, desktop integration, hardware rendering and the view inside a
+worn headset were not checked. 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/computer-use.md

@@ -0,0 +1,67 @@
+# Computer use through Frame Control MCP
+
+The MCP transport can carry semantic actions or visual computer-use actions.
+The limits are the Frame's underlying interfaces, permissions and whether an
+action can be targeted and verified. A stereoscopic headset screenshot alone
+is not a reliable coordinate system for clicking a particular app window.
+
+## What exists, and the right route
+
+| Surface | Evidence and route | Remaining work or boundary |
+|---|---|---|
+| Frame management | **Verified:** existing SSH/HTTP operations for status, capture and file transfer work through MCP. Typed install/launch/power tools wrap the existing API. | Extend typed operations before adding generic mouse automation. Preserve explicit approval for consequential changes. |
+| App/window observation | **Verified 2026-09-29:** `computer_state` reads gamescope X11 window/app/process triples, focused app and the installed AT-SPI library. | Bounded to 96 accessible nodes and six levels. Trees may be truncated, stale, hidden or incomplete. Snapshot paths and XIDs are observations, never durable action permissions. |
+| Chromium page content | **Verified previously:** the assistant rendered and could be exercised through CDP in an isolated Frame Chromium profile. | A shipped click/type surface needs exact owned browser/target binding, fresh element references, lifecycle cleanup, consent and post-action readback. Do not expose unrestricted JavaScript or attach to arbitrary existing profiles automatically. |
+| Steam UI | **Verified 2026-09-29:** the AT-SPI service listed the Steam client's Chromium process and frame nodes, but child traversal was incomplete. Existing `frame_steam.py` uses Steam's loopback CDP endpoint for specific operations. | Prefer those narrow Steam interfaces. Presence of AT-SPI does not prove controls are actionable, and generic pointer injection is not proved for VR menus. |
+| Other Linux apps | **Verified 2026-09-29:** Frame ships libX11, libXtst and libatspi; `/dev/uinput` is writable by the current user. | Library presence and access permissions do not prove that a game accepts input. Global virtual input can affect whichever app has focus. Do not ship a blind keyboard/mouse tool on this evidence alone. |
+| Panel focus and layouts | **Documented in [#41](https://github.com/saphid/frame-control/pull/41):** `POST /api/panels` accepts `list`, `focus` and `open`. Focus was verified there. | Reuse that owned interface after integration. Its tested gamescope-owned overlay transform setters return `PermissionDenied`; no reliable saved spatial-layout interface was established. Do not duplicate its implementation here. |
+| Shared keyboard/trackpad | **Documented in [#19](https://github.com/saphid/frame-control/pull/19):** `/api/input` supplies state/start and event submission, implemented with a bundled KDE Connect daemon. | This branch does not import, launch or depend on that daemon. The user's own-implementation rule remains authoritative. A first-party input implementation or permitted bundled-library route needs its own delivery evidence before MCP integration. |
+| Physical/device boundaries | **Documented:** an asleep Frame may be off the network; power authorization can require the user's password; physical pairing and headset fit/comfort require the user. | MCP cannot bypass offline hardware, consent, compositor permissions or physical verification. Keep explicit human handoffs. |
+
+## Reusing the existing computer-use work
+
+**Documented:** the installed `cua-driver` skill has the right control pattern:
+observe an exact window, use a semantic target if available, fall back to pixels
+from that same snapshot, then read back the result. Its browser route requires
+an exact process/window/target binding and session-scoped element references.
+Those are useful design rules for Frame tools.
+
+**Verified locally 2026-09-29:** `cua-driver describe get_window_state` describes
+host-local process/window IDs and macOS AX inspection. It does not establish an
+SSH Frame target. The installed skill's advertised Linux companion file is
+missing. A native ARM64 Frame backend, its dependencies and remote transport
+have not been verified. We therefore do not claim that the existing Mac driver
+can control the Frame by passing it a Frame PID or screenshot, and we do not
+make the feature depend on installing that application.
+
+Frame Control's `computer_state` is our own Python implementation over installed
+platform libraries. It sends the probe over SSH stdin, writes no helper to disk,
+and exits after one observation. Missing displays/libraries return explicit
+errors; a 15-second process deadline prevents a stalled accessibility call from
+leaving a probe behind. Window names and accessibility text are untrusted app
+content, never instructions to an agent.
+
+**Recommended next implementation:** an isolated Chromium session with typed
+snapshot/click/type/scroll tools and exact fresh target binding, then individually
+verified native app actions. Use the headset capture to judge appearance, not to
+invent a screen-to-window coordinate transform. Direct tool calls must retain
+approval rules; a generic computer-use tool must not become a route around the
+MCP approval panel, install confirmation or power confirmation.
+
+## Isolated browser input proof
+
+**Verified 2026-09-29, SteamOS 0.4.1, BUILD_ID 20260925.6191901:** a temporary
+Frame Chromium profile loaded a local test page through an SSH reverse tunnel.
+CDP `Input.insertText` entered the test string in its own input. A CDP
+`Input.dispatchMouseEvent` press/release on its own button copied that string
+to the page's result; DOM readback matched exactly. The browser profile,
+loopback forwards and panel log were removed afterward. No user app was typed
+into, no global settings were changed and no third-party helper app was used.
+
+AT-SPI did **not** expose the test page's controls in that same probe, even with
+Chromium's renderer-accessibility flag. It returned the partial Steam-client
+tree instead. The reason remains **unverified**; this is an evidence gap, not
+proof that Frame accessibility cannot work. For a first implementation,
+Chromium's proven page-specific CDP route is stronger than assuming complete
+AT-SPI coverage. This proof does not ship unrestricted click/type tools or
+establish input delivery to SteamVR's menus.

docs/devices.md

@@ -0,0 +1,247 @@
+# Headsets, addresses and the connection
+
+Frame Control can manage more than one Steam Frame, and each headset can be
+reached at more than one address: a LAN IP at home, another at the office, its
+mDNS name (`frame.local`), its Tailscale IP or MagicDNS name. The **Devices**
+tab (key 5) lists them. The connection pill in the header says whether the one in
+use is connected and how (Tailscale, or the network's name); click it to add,
+edit or reorder that headset's addresses, or to see each step of connecting.
+
+The code is in three modules, all stdlib-only Python on your computer:
+
+| Module | What it does |
+|---|---|
+| `ui/frame_devices.py` | The registry: headsets, their addresses, networks; importing and updating `~/.ssh/config`; pinned host keys |
+| `ui/frame_network.py` | Which network this computer is on, and Tailscale's state |
+| `ui/frame_link.py` | The connector: finds the headset, keeps the SSH connection, publishes each stage; the Devices API |
+
+## Headsets
+
+Each headset keeps its own SSH alias, as Set Up Connection has always written
+it: the first is `frame`, the next `frame-2`, and so on. Terminal's
+`ssh frame-2` and the helper scripts (`FRAME_ALIAS=frame-2 scripts/push.sh …`)
+work for each one.
+
+- **Nothing to migrate by hand.** On first start, the app imports every
+  `# >>> steam-frame (ALIAS) >>>` block in `~/.ssh/config` as a headset, with
+  the block's HostName as its first address. It also copies the host key your
+  `known_hosts` already trusts for that address into the headset's own
+  known_hosts file, `~/.ssh/frame-control-hosts/<id>`, so nobody is asked to trust it again.
+- **Add a headset** runs Set Up Connection (`scripts/connect.sh` on macOS,
+  `ui/frame_connect.py --alias NAME` elsewhere) in a terminal with a new alias.
+  When it writes its block, the app picks the headset up by itself. If Set Up
+  Connection runs again and finds a headset somewhere new, that address is added
+  at the top of its list.
+- **Use this headset** (or the switcher in the header, or the app's
+  **Frame → Headset** menu) moves the whole app to another headset; every panel
+  reloads from it. From that moment no command goes to the previous headset, even
+  if the new one never answers. It waits while an install is running, since an
+  install reads the SSH settings step by step.
+- **Remove** forgets a headset. Its `~/.ssh/config` block stays unless you tick
+  the box; either way it isn't imported again unless Set Up Connection changes it.
+- A plain `FRAME_ALIAS` that Set Up Connection never configured still works: the
+  app shows it as not set up and lets ssh's own config decide where it goes.
+
+## Addresses
+
+Each address has a kind (LAN, mDNS, Tailscale or Other, guessed from the address
+and changeable), an optional label, the networks it has worked on, and when it
+last worked with its round-trip time.
+
+When connecting, the app **tries all addresses at once** (TCP to the SSH port)
+and ranks them:
+
+1. addresses that worked on the network this computer is on now;
+2. mDNS names;
+3. Tailscale addresses, if Tailscale is running here;
+4. addresses not tried on this network yet;
+5. addresses that only ever worked on other networks;
+6. Tailscale addresses while Tailscale is off.
+
+Your order (on the Devices tab, or in the pill's dialog) breaks ties. The best-ranked address that answers
+wins; one that answers first waits up to 0.35 s for a better-ranked one that is
+still trying. If SSH to the winner fails in a way another address could fix
+(a different device answered there, or the link dropped), the next one that
+answered is tried. Every success records the network on that address, so next
+time on that network it's tried first.
+
+**Test now** probes every address and tries SSH on each one that answers, without
+disturbing the connection in use: "SSH works", "answered as a different
+headset", "refused this computer's key", or why it didn't answer. **Find on
+Tailscale** lists your tailnet's devices (likely headsets first, from `tailscale
+status --json`, including the Mac app's own CLI) with buttons to add their
+MagicDNS name or IP. **Find on this network** asks mDNS for SteamOS devkit
+services and checks `ALIAS.local` and `frame.local`.
+
+**The pill's dialog** lists the same addresses, with what each one answered, and
+can add, edit, reorder and remove them without leaving the page you're on. When
+the headset reports a LAN IP on the same network as this computer and that IP
+isn't saved, it offers to add it. The offer puts the address first in the list,
+so on that network it wins over the Tailscale name; away from home the Tailscale
+name still leads. A new or edited address is tested straight away. While
+connected, **Reconnect** applies your changes now rather than at the next
+connection: it tries the addresses again, ranked as above, and the best-ranked
+one that answers promptly wins. It doesn't pick a particular address.
+
+## Networks
+
+A network is told apart by its default gateway: the router's IP address plus its
+hardware (MAC) address, read with `route`/`arp` (macOS), `ip route`/`ip neigh`
+(Linux) or `route print`/`arp -a` (Windows). That works on wired networks, and
+on macOS 14 and later, which hides the Wi-Fi name from apps without Location
+permission. Where the system does share the Wi-Fi name, it's shown, and you can
+name any network yourself ("Home Wi-Fi") on the Devices tab.
+
+The app rereads the gateway every 5 seconds and Tailscale's state every
+30 seconds. Changing networks reconnects.
+
+## 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.
+2. **Finding the headset**: each address resolving, trying, answered in N ms,
+   no answer, refused, or can't be found.
+3. **Opening SSH** to the address that answered.
+4. **Checking the headset's identity**: the host key must match the one pinned
+   for this headset.
+5. **Logging in** as the headset's user.
+6. **Connected** via network N, address A, round trip T; or **failed** at a stage
+   with the reason in plain words and a countdown to the next try (5, 10, 20,
+   then every 30 seconds). Retry now skips the wait.
+
+Stages 3 to 5 come from following `ssh -v` as it runs. On macOS and Linux the
+connection is an SSH ControlMaster that every command shares; when it dies (the
+headset slept or left the network) the connector notices and starts again. On
+Windows, where OpenSSH can't share a connection, the same handshake runs once
+and each command then connects on its own; a command that can't reach the
+headset makes the connector start again. There ssh's stderr goes to a file that
+the connector reads as it grows, not a pipe: Windows' OpenSSH can block writing
+to a redirected pipe.
+
+Once connected, every `ssh`, `scp` and `rsync` the app runs gets
+`-o HostName=<address> -o HostKeyAlias=frame-control-<id>
+-o UserKnownHostsFile=~/.ssh/frame-control-hosts/<id> -o HashKnownHosts=no -o User=… -o Port=…`. The
+alias's block in `~/.ssh/config` is also updated to the last address that
+worked (and to the user and port you set), so Terminal's `ssh frame` and the
+scripts follow. Edits to `~/.ssh/config` take a lock file
+(`~/.ssh/config.frame-control.lock`) that Set Up Connection takes too, and never
+write over a change someone else made since the app last read the file.
+
+**Host keys are pinned per headset, not per address.** Your own `known_hosts`
+is keyed by address, so a different device answering at a remembered IP (a DHCP
+lease that moved) would look like a new host there. The app keeps one known_hosts
+file per headset instead, so saving or forgetting one headset's key never touches
+another's: a different device answering at one of its
+addresses is refused, and the pill says so. A headset's first connection trusts
+the key it shows, as Set Up Connection does: while a headset has never had an
+identity here, every ssh command gets `StrictHostKeyChecking=accept-new` (the
+first contact saves it, whichever command makes it), and from then on
+`StrictHostKeyChecking=yes`. `accept-new` never replaces a saved key, so it
+can't hide a change. The saved key's fingerprint is also recorded in
+`devices.json` (`identity`), along with a flag that never clears
+(`identity_established`), as soon as ssh saves the key: even if the login is then
+refused. A headset counts as having had an identity if the flag is set, a
+fingerprint is recorded, its pin file exists at all, or a connection to it ever
+worked (older files get the flag from that when loaded, so editing or removing
+the address that worked doesn't undo it); then
+a pin file that's deleted, empty, unreadable or not parseable **fails closed**
+(*Checking the headset's identity* fails, "missing or can't be read") rather than
+trusting whatever answers, and only **Check its key…** saves a key again. It
+says when the key it reads matches the recorded fingerprint.
+
+**When the key changes** (SteamOS reinstalled or reset, a new headset at the
+same address, or a different device answering there), nothing is accepted by
+itself. The connection fails at *Checking the headset's identity*; the banner
+and the headset on the Devices tab say so, with **Check the new key…** (also
+**Check its key…** on the Devices tab at any time). That reads the key the
+headset shows now, and nothing more: ssh writes it to a throwaway known_hosts
+file during the key exchange, before any login, and is stopped as soon as it
+has. Every other kind of contact is ruled out on the command line, ahead of
+anything `~/.ssh/config` says: no authentication of any kind, no agent
+(`IdentityAgent=none`, `ForwardAgent=no`), no X11 or port forwarding, no local
+or remote command (`-N`), no terminal, and `-F none`. Through a ProxyJump host
+it builds that hop itself, as a ProxyCommand whose ssh forwards nothing and runs
+no local command (ProxyJump's own ssh would take `ForwardAgent` and
+`LocalCommand` from `~/.ssh/config`); it still logs in to the jump host as
+configured. Every word of that ProxyCommand is quoted for the shell that runs it
+(and `%` doubled for ssh's own tokens), the forward is `[%h]:%p` so an IPv6
+headset works, and an IPv6 jump host is passed bare with its port. Through a ProxyCommand from `~/.ssh/config`, or several jump hosts,
+it refuses, since those can't be made safe from here: add an address it can
+reach directly, or compare the key by hand. It shows the key's SHA256 fingerprint next to
+the saved one, with the command that prints it on the headset
+(`ssh-keygen -lf /etc/ssh/ssh_host_ed25519_key.pub`, in Konsole on its desktop).
+**This is my headset: trust its new key** then saves exactly that key, replacing
+the old one, and reconnects. The server keeps the key it showed for 10 minutes
+and saves it only if the page sends back the same fingerprint, and only while
+the headset's port, user and that address are unchanged; it never saves whatever
+answers next. The API's old `forget-identity`, which deleted the pin so that the
+next contact saved any key unseen, is refused. Set Up Connection can't fix a changed key: it checks your
+own `known_hosts`, not the headset's file.
+
+**When the headset refuses this computer's key** (`Permission denied
+(publickey,…)`), the connection stops at *Logging in*, and the banner and the
+Devices tab offer **Set Up Connection…**, which pairs this computer again.
+
+Neither is reported as a fault: the diagnostics report each kind at most once
+a session ([privacy.md](privacy.md)).
+
+## One server at a time
+
+Only one Frame Control server runs per user (a lock file, `server.lock`, in the app's
+data folder). Two would each connect, reconnect and edit the headsets on their own, and
+one could move the other's install to a different headset. A second one, say
+`scripts/frame-ui.sh` while the app is open, exits with "Frame Control is already
+running". `FRAME_CONTROL_DATA_DIR` gives a separate one, with its own headsets.
+
+## API
+
+All under the usual `/api/` guards (loopback `Host`, `X-Frame-UI` header).
+
+| Request | Returns |
+|---|---|
+| `GET /api/connection` | The connection state: `phase` (connecting, connected, failed), `device`, `network`, `stages`, `probes`, `via`, `error`, `retry_at`, `tests`, `version` |
+| `GET /api/connection/events` | The same as server-sent events, one each time it changes (the page reads it with `fetch`, since `EventSource` can't send the header) |
+| `GET /api/devices` | Headsets, the current network, known networks, the next free alias |
+| `GET /api/devices/tailscale?id=` | Tailscale peers, likely headsets first |
+| `GET /api/devices/mdns?id=` | Headsets found on this network |
+| `POST /api/devices` | `{"action": ...}`: `use`, `update` (name, user, port), `remove`, `address-add`, `address-update`, `address-remove`, `address-move`, `test`, `identity-scan` (read the key the headset shows: `scan` with `type`, `fingerprint`, `host`, `saved`, `recorded`, `matches`, `recorded_match`), `identity-trust` (`fingerprint`: save the key `identity-scan` showed), `forget-identity` (refused: use the two before), `name-network`, `setup` (alias, optional host), `retry` |
+
+Every host, alias and user is checked against strict patterns before it's
+stored, because they end up in ssh arguments and `~/.ssh/config`; nothing goes
+through a shell.
+
+## The registry file
+
+`devices.json` in the app's data folder (`~/Library/Application Support/Frame
+Control` on macOS, `%APPDATA%\Frame Control` on Windows,
+`~/.local/share/frame-control` on Linux). It's plain JSON so the iPhone app can
+share the format later (it still connects to one host; see
+[iphone.md](iphone.md)):
+
+```json
+{"version": 1, "active": "f67f8b7e",
+ "devices": [{"id": "f67f8b7e", "name": "Steam Frame", "alias": "frame", "user": "steamos", "port": 22,
+              "identity_files": ["~/.ssh/id_ed25519_frame"], "identity": ["SHA256:…"], "identity_established": true,
+              "addresses": [{"host": "frame.local", "kind": "mdns", "label": "",
+                             "networks": ["n-e0998baa61"], "last_ok": 1790593550.4, "last_rtt_ms": 0.9}]}],
+ "networks": {"n-e0998baa61": {"name": "Home Wi-Fi", "ssid": null, "gateway": "192.168.1.1",
+                               "gateway_mac": "b4:fb:e4:b5:67:55", "wifi": true, "last_seen": 1790593550.0}}}
+```
+
+A network id is `n-` and the first 10 hex digits of SHA-1 of `gateway|mac`.
+
+## Tests
+
+`tests/test_devices.py`, `tests/test_network.py` and `tests/test_link.py` run
+with the other unit tests. They use a stand-in `ssh` (`tests/fakessh/ssh`) that
+prints what `ssh -v` prints and plays a ControlMaster, real sockets on this
+computer for the addresses, and temporary folders for `~/.ssh`
+(`FRAME_CONTROL_SSH_DIR`) and the app data (`FRAME_CONTROL_DATA_DIR`), so they
+never touch yours.

docs/evidence/android-import/device.json

@@ -0,0 +1,34 @@
+{
+  "date": "2026-10-20T03:53:25Z",
+  "build_id": "20260925.6191901",
+  "app": "F-Droid Basic 2.0.2 (org.fdroid.basic, version code 2000052)",
+  "input": "One real APK plus synthetic main and patch OBBs named with older version code 2000050",
+  "sibling_discovery": true,
+  "automatic_import": "passed",
+  "closed_after_import": true,
+  "independent_readback": [
+    "5023b41e7ac80f8b26a868db1f66884976bf864fab81a070ad37539f3481b352  /sdcard/Android/obb/org.fdroid.basic/main.2000050.org.fdroid.basic.obb",
+    "aecbed7433e81aaeef40942069d03ad23130f09d93b7e78bbe224865a9573157  /sdcard/Android/obb/org.fdroid.basic/patch.2000050.org.fdroid.basic.obb"
+  ],
+  "cleanup": {
+    "test_install_removed": true,
+    "running_instances_before": {},
+    "running_instances_after": {},
+    "battery_before": [
+      "100",
+      "Full",
+      "Charging"
+    ],
+    "battery_after": [
+      "99",
+      "Discharging",
+      "Charging"
+    ],
+    "shared_lock_released": true
+  },
+  "limits": [
+    "No headset rendering or gameplay assertion; headset unworn.",
+    "Synthetic expansion files verify transport and persistence, not Resident Evil 4 compatibility.",
+    "A game that exits before its Lepton instance can accept data was not tested."
+  ]
+}

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/clip-long-2026-10-24.json

@@ -0,0 +1,29 @@
+{
+  "date_utc": "2026-10-24",
+  "version": "v0.4.17",
+  "steam_os_version": "0.5.6",
+  "steam_os_build": "20261015.6141207",
+  "result": "PASS: the real Steam-saved clip exported beyond 60 seconds",
+  "method": "Steam manual recording of a reserved test title, then Frame Control's production frame_clips.export_clip path; no packaged GUI button click",
+  "source": {
+    "kind": "saved Steam clip",
+    "duration_seconds": 100.801,
+    "chunks": 68,
+    "gaps": 0
+  },
+  "export": {
+    "format": "MP4",
+    "bytes": 1377849,
+    "sha256": "82ef31f65e6933d122bc326d664beb2eb2e3ba6969f26c0032552e80fbe8d823",
+    "duration_seconds_ffprobe": 100.833335,
+    "video": "H.264, 1920x1080, 6049 frames",
+    "audio": "AAC, 48000 Hz, stereo",
+    "full_ffmpeg_decode": "passed without errors"
+  },
+  "cleanup": "Restored Steam recording mode to its prior off setting; stopped and removed only the reserved title and its processes; no recording or running Steam apps remained; Game Mode active, battery 100%, shared test lock released",
+  "limits": [
+    "This exercised the production export code path, not a packaged GUI Export click.",
+    "Visible gameplay quality, perceptual audio/video sync, trims and longer recordings were not checked.",
+    "The newly saved Steam source clip was retained; no user recording was deleted."
+  ]
+}

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

@@ -0,0 +1,94 @@
+{
+  "date_utc": "2026-10-24T09:08:35.523Z",
+  "result": "PASS: packaged Electron visible Export click saved the retained real Steam clip beyond 60 seconds",
+  "frame_control_tag": "v0.4.17",
+  "documentation_base_commit": "4e456480aefbe541e334dbd247328537f535bd94",
+  "host": "lxso2",
+  "steamos_version": "0.5.6",
+  "steamos_build": "20261015.6141207",
+  "package": {
+    "asset": "Frame-Control-linux-x86_64.AppImage",
+    "url": "https://github.com/saphid/frame-control/releases/download/v0.4.17/Frame-Control-linux-x86_64.AppImage",
+    "sha256": "b1b8eb82bf73a227b2cd36e8f0ef3a2ebdf7967c5853efb08a9634f38227015d",
+    "launch": "Verified release asset; --appimage-extract, then unmodified squashfs-root/AppRun. Electron used the bundled server and Python, not checkout source.",
+    "display": "Xvfb :137, 1440x1000x24; Electron window 1400x950 including native chrome",
+    "flags": [
+      "--no-sandbox",
+      "--disable-gpu",
+      "--remote-debugging-port=49371",
+      "--remote-debugging-address=127.0.0.1",
+      "--user-data-dir=/tmp/frame-packaged-export-20261024/electron-profile"
+    ],
+    "isolation": "Throwaway XDG_CONFIG_HOME, FRAME_CONTROL_DATA_DIR and Electron profile; telemetry and update checks disabled; existing SSH identity and normal home Videos destination used."
+  },
+  "ui": {
+    "navigation": "Dismissed optional email prompt with No thanks; clicked Tools, then Capture & Live; scrolled Steam clips into view.",
+    "row": "Steam recording \u00b7 Clip; Oct 24, 8:53 AM \u00b7 1:40 \u00b7 2 MB",
+    "action": "Playwright connected to this Electron instance over local CDP; locator.click() clicked its visible button named exactly Export. The test did not directly invoke an export function or API POST.",
+    "button": "button.small[data-clip-export=\"0\"]",
+    "click_is_trusted": true,
+    "button_bounds_css_pixels": {
+      "x": 1300.390625,
+      "y": 701.15625,
+      "width": 61.609375,
+      "height": 28
+    },
+    "post_clips_export_http": 200,
+    "job": "0ab20b1788adce63",
+    "job_poll_http": 200,
+    "saved_message": "Saved clip_15658413054201167872_20261024_085343.mp4 to ~/Videos/SteamFrame",
+    "final_row": "ON PC; Export again",
+    "screenshots": [
+      "clip-packaged-export-2026-10-24-before.png",
+      "clip-packaged-export-2026-10-24-after.png"
+    ],
+    "screenshot_scope": "Cropped to Steam clip rows and saved notification; unrelated screenshot thumbnails and host connection identity excluded."
+  },
+  "source": {
+    "clip_id": "10230640/clips/clip_15658413054201167872_20261024_085343",
+    "duration_seconds": 100.801,
+    "duration_provenance": "Retained real Steam clip from clip-long-2026-10-24.json; current packaged UI displays 1:40."
+  },
+  "output": {
+    "path": "~/Videos/SteamFrame/clip_15658413054201167872_20261024_085343.mp4",
+    "bytes": 1377849,
+    "sha256": "82ef31f65e6933d122bc326d664beb2eb2e3ba6969f26c0032552e80fbe8d823",
+    "matches_prior_production_export_size_and_sha256": true,
+    "duration_seconds_ffprobe": 100.833335,
+    "duration_difference_from_steam_seconds": 0.032335,
+    "video": "H.264, 1920x1080, 6049 decoded frames",
+    "audio": "AAC, 48000 Hz, stereo, 4724 decoded audio frames",
+    "validation": [
+      "ffprobe -v error -count_frames -show_entries format=duration,size:stream=codec_name,codec_type,width,height,sample_rate,channels,nb_read_frames -of json <output>: exit 0",
+      "sha256sum <output>: exact match to prior production export",
+      "ffmpeg -v error -xerror -i <output> -f null -: exit 0, no errors"
+    ]
+  },
+  "cleanup": {
+    "shared_lock": "Acquired with ssh frame mkdir /tmp/frame-test.lock after read-only battery/build/lock checks; released with rmdir after app shutdown; absence read back.",
+    "battery_percent_before": 99,
+    "battery_percent_after": 99,
+    "battery_status": "Not charging; charger Full",
+    "packaged_app_and_server_exited": true,
+    "test_xvfb_stopped": true,
+    "frame_export_cache_directories_remaining": 0,
+    "ffmpeg_processes_after": 0,
+    "game_mode_and_steamvr_running_after": true,
+    "steam_source_clip_retained": true,
+    "user_recordings_deleted": false,
+    "headset_install_or_settings_changes": false,
+    "local_export_retained": true
+  },
+  "limits": [
+    "The unchanged AppImage payload ran after extraction on a virtual X desktop, with Chromium sandbox and GPU disabled. FUSE mounting, desktop integration and hardware rendering were not tested.",
+    "The click was automated trusted pointer input in a visible Electron window on Xvfb, not a human click on a physical monitor. T3 collaborative preview opened successfully but drives separate browser tabs; Electron-native automation was used for this window.",
+    "No new game or Steam recording was started. Visible gameplay quality, audible content and perceptual audio/video sync were not assessed.",
+    "Clips longer than this retained 100-second clip, trims and automatic copying remain unverified.",
+    "No release, tag or application code was changed."
+  ],
+  "validation_local": {
+    "clip_regression_suite": "python3 -m unittest discover -s tests -p test_clips.py -v: 34 tests passed in 20.173s, including real ffmpeg long-recording export",
+    "json": "python3 -m json.tool: passed",
+    "diff": "git diff --check: passed"
+  }
+}

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/desktop-capture-packaged-2026-10-24.json

@@ -0,0 +1,206 @@
+{
+  "date_utc": "2026-10-24",
+  "base_commit": "de931bc",
+  "issue": 73,
+  "result": "Packaged Desktop Capture passed for a mapped nested KDE compositor on the real Frame; wearer-visible overlay condition was not established. Do not close #73 from this test.",
+  "package": {
+    "tag": "v0.4.17",
+    "asset": "Frame-Control-linux-x86_64.AppImage",
+    "sha256": "b1b8eb82bf73a227b2cd36e8f0ef3a2ebdf7967c5853efb08a9634f38227015d",
+    "release_digest_matched": true,
+    "panel_helper_matches_base": true,
+    "unmodified_payload": true,
+    "host": "lxso2",
+    "display": "Xvfb :139",
+    "flags": [
+      "--no-sandbox",
+      "--disable-gpu"
+    ],
+    "private_profile_and_data": true,
+    "telemetry_and_update_checks_disabled": true
+  },
+  "preflight": {
+    "steamos_version": "0.5.6",
+    "build_id": "20261015.6141207",
+    "battery_percent": 99,
+    "battery_status": "Not charging",
+    "game_mode": true,
+    "full_plasma_session": false,
+    "nested_desktop_running": false,
+    "nested_runtime_present": false,
+    "lock_present": false,
+    "steam_pid": 297826,
+    "vrserver_pid": 297506,
+    "vrcompositor_pid": 297620,
+    "gamescope_service_invocation": "e8c1085b3bbd4e79a323b3e4a9bc6355",
+    "focusable_windows": [],
+    "focused_windows": []
+  },
+  "session": {
+    "started_utc": "2026-10-24T09:43:48Z",
+    "lock_acquired": true,
+    "launch": [
+      "systemd-run",
+      "--user",
+      "--unit=fc-issue73-desktop-20261024",
+      "--collect",
+      "--property=RuntimeMaxSec=180s",
+      "--property=TimeoutStopSec=15s",
+      "--property=KillMode=control-group",
+      "--setenv=DISPLAY=:0",
+      "--setenv=XDG_RUNTIME_DIR=/run/user/1000",
+      "--setenv=DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus",
+      "--setenv=XDG_SESSION_TYPE=x11",
+      "--setenv=XDG_CURRENT_DESKTOP=gamescope",
+      "/usr/bin/steamos-nested-desktop"
+    ],
+    "response": "Running as unit: fc-issue73-desktop-20261024.service; invocation ID: 92cff1e57c794212997d46c0a68877ec\n"
+  },
+  "discovery": {
+    "focus": 62914560,
+    "focus_display": ":0",
+    "panels": [
+      {
+        "window": 62914560,
+        "display": ":0",
+        "name": "KDE Wayland Compositor - Press right control key to grab input",
+        "x": 0,
+        "y": 0,
+        "width": 1920,
+        "height": 1080,
+        "app": 0,
+        "focused": true
+      }
+    ]
+  },
+  "window_evidence": {
+    "xwininfo_map_state": "IsViewable",
+    "width": 1920,
+    "height": 1080,
+    "focused_after_show_request": true,
+    "steamvr_overlay_key": "valve.steam.desktopgame.0",
+    "steamvr_overlay_visibility_after_show_request": "not_visible"
+  },
+  "capture": {
+    "repeat_utc": "2026-10-24T09:44:47.323Z",
+    "route": "/api/screenshot?view=panel&window=62914560&display=%3A0",
+    "http": 200,
+    "content_type": "image/png",
+    "content_length": 1209980,
+    "source_header": "panel",
+    "decoded": {
+      "width": 1920,
+      "height": 1080,
+      "source": "panel",
+      "selected": {
+        "window": 62914560,
+        "display": ":0",
+        "name": "KDE Wayland Compositor - Press right control key to grab input",
+        "x": 0,
+        "y": 0,
+        "width": 1920,
+        "height": 1080,
+        "app": 0,
+        "focused": true
+      },
+      "stamp": "9:44:48 AM",
+      "badge": "Desktop \u00b7 KDE Wayland Compositor - Press right control key to grab input"
+    },
+    "canvas_png_bytes": 2011278,
+    "first_capture_pixel_statistics": {
+      "width": 1920,
+      "height": 1080,
+      "min": 2.3333333333333335,
+      "max": 255,
+      "hidden": false
+    },
+    "first_capture_click_event": {
+      "isTrusted": true,
+      "utc": "2026-10-24T09:44:12.738Z"
+    },
+    "actions": "Two Playwright locator.click() actions on the visible #shotBtn in the actual packaged Electron window; first click recorded isTrusted=true. No direct screenshot API invocation by harness."
+  },
+  "device_cleanup": {
+    "utc": "2026-10-24T09:45:33Z",
+    "before_stop": {
+      "exit": 0,
+      "out": "MainPID=300739\nControlGroup=/user.slice/user-1000.slice/user@1000.service/app.slice/fc-issue73-desktop-20261024.service\nActiveState=active\n",
+      "err": ""
+    },
+    "hide_dashboard": {
+      "exit": 0,
+      "out": "HideDashboard",
+      "err": ""
+    },
+    "stop_owned_unit": {
+      "exit": 0,
+      "out": "",
+      "err": ""
+    },
+    "after_stop": {
+      "exit": 0,
+      "out": "MainPID=0\nLoadState=not-found\nActiveState=inactive\n",
+      "err": ""
+    },
+    "desktop_processes": {
+      "exit": 1,
+      "out": "",
+      "err": ""
+    },
+    "nested_runtime_exists": false,
+    "session": {
+      "exit": 0,
+      "out": "Id=gamescope-session.target\nActiveState=active\nInvocationID=a2fee8ebf55c42c7b546390d14cd985c\n\nId=plasma-workspace-wayland.target\nActiveState=inactive\nInvocationID=\n\nId=gamescope-session.service\nActiveState=active\nInvocationID=e8c1085b3bbd4e79a323b3e4a9bc6355\n",
+      "err": ""
+    },
+    "steam": {
+      "exit": 0,
+      "out": "297826 /home/steamos/.local/share/Steam/steamrtarm64/steam -cef-enable-debugging -deckard -gamepadui -steamdeck -steamos3 -vrgamepadui\n",
+      "err": ""
+    },
+    "steamvr": {
+      "exit": 0,
+      "out": "297506 /opt/steamvr/bin/linuxarm64/vrserver -waitformonitor -ipccontrolfilepath /tmp/SteamVR-IPCControlFile-297420\n297620 /opt/steamvr/bin/linuxarm64/vrcompositor\n",
+      "err": ""
+    },
+    "xprops": {
+      "exit": 0,
+      "out": "GAMESCOPE_FOCUSABLE_WINDOWS(CARDINAL) = \nGAMESCOPE_FOCUSED_WINDOW(CARDINAL) = \n",
+      "err": ""
+    },
+    "battery": {
+      "capacity": "99",
+      "status": "Not charging"
+    },
+    "owned_lock_released": true
+  },
+  "host_cleanup": {
+    "electron": {
+      "pid": 1578431,
+      "exists_after": false
+    },
+    "xvfb": {
+      "pid": 1578428,
+      "exists_after": false
+    },
+    "x_socket_absent": true
+  },
+  "delayed_final_readback": "2026-10-24T09:46:39Z\nshared-lock-absent\nLoadState=not-found\nActiveState=inactive\nId=gamescope-session.target\nActiveState=active\n\nId=plasma-workspace-wayland.target\nActiveState=inactive\nInvocationID=e8c1085b3bbd4e79a323b3e4a9bc6355\n297826 /home/steamos/.local/share/Steam/steamrtarm64/steam -cef-enable-debugging -deckard -gamepadui -steamdeck -steamos3 -vrgamepadui\n297506 /opt/steamvr/bin/linuxarm64/vrserver -waitformonitor -ipccontrolfilepath /tmp/SteamVR-IPCControlFile-297420\n297620 /opt/steamvr/bin/linuxarm64/vrcompositor\nnested-runtime-absent\n100\nFull\nGAMESCOPE_FOCUSABLE_WINDOWS(CARDINAL) = \nGAMESCOPE_FOCUSED_WINDOW(CARDINAL) = \n",
+  "validation": {
+    "focused_panel_suite": "42 tests passed in 14.805s (test_touch.py), including production-page Node behavior tests",
+    "website": "2 tests passed (node --test site/test/*.test.mjs)",
+    "node_panels": "Passed independently (node tests/page/desk_panels.mjs)",
+    "metadata_and_links": "JSON parsed; result/cleanup assertions and relative evidence/streaming/testing links passed",
+    "diff": "git diff --check passed"
+  },
+  "limits": [
+    "SteamVR continued reporting not_visible after ShowDashboard, despite mapped X window and confirmed focus. No worn-headset visual assessment; does not establish the reporter's visible-overlay condition.",
+    "SteamOS 0.5.6 only; reporter used 0.4.5 with unknown Frame Control version and no reproduction steps.",
+    "Nested desktop launched with SteamOS steamos-nested-desktop from a bounded transient user unit using Steam display/session variables; not launched through a wearer's Steam UI.",
+    "Extracted unchanged AppImage on a virtual X display with Chromium sandbox and GPU disabled; no FUSE, physical monitor or hardware-rendering test.",
+    "No Live video, Control input or full Desktop Mode test.",
+    "Nested-desktop journal included gamescope WSI/Vulkan-hook warnings. No warning was dismissed; captured compositor pixels were nonblank.",
+    "Initial CDP response.body() yielded zero bytes despite successful image decode. Repeat verified Content-Length, fresh decoded image, panel selection and PNG export from canvas; the initial raw-body size is not treated as capture failure or proof.",
+    "No private desktop pixels, issue screenshot or raw desktop journal committed."
+  ]
+}

docs/evidence/desktop-capture-packaged-2026-10-24.md

@@ -0,0 +1,100 @@
+# Packaged Desktop Capture, 2026-10-24
+
+Base: `de931bc`. Package: Linux x86_64 **v0.4.17**. Device: real Frame,
+SteamOS **0.5.6**, BUILD_ID **20261015.6141207**. Host: lxso2.
+[Sanitized state and response evidence](desktop-capture-packaged-2026-10-24.json).
+
+## Result and issue boundary
+
+The packaged app discovered the nested KDE compositor and both automated
+Desktop **Capture** button clicks succeeded. The repeat returned HTTP 200,
+`Content-Type: image/png`, `X-Capture-Source: panel`, and Content-Length
+1,209,980. The app decoded a fresh, nonblank 1920×1080 image and displayed
+the Desktop panel badge. No further product failure was reproduced or fixed.
+
+This does **not** establish the full visible-desktop condition in
+[#73](https://github.com/saphid/frame-control/issues/73). `xwininfo` reported
+the desktop window `IsViewable`, and gamescope confirmed focus after
+`vrcmd --showdashboard valve.steam.desktopgame.0`. However, SteamVR still
+reported that overlay `not_visible`. There was no worn-headset visual check.
+The observation proves capture of a mapped nested compositor, not its visible
+presentation to a wearer. Do not close #73 from this evidence.
+
+The issue screenshot shows a desktop panel in the headset view while Desktop
+Capture logs “no app panel is open in the headset.” The reporter used SteamOS
+0.4.5, gave no Frame Control version or reproduction steps, and has not replied
+to the maintainer's 0.4.3 update request. The duplicate page function was already
+fixed; [PR #152](https://github.com/saphid/frame-control/pull/152) subsequently
+improved unknown-state diagnostics. Its [earlier investigation](panel-discovery-2026-10-24.md)
+was blocked from starting a desktop by another task's lock. This run adds a
+current-package capture observation, without reproducing the older failure.
+
+## Procedure
+
+1. Read-only preflight found Game Mode active, full Plasma inactive, Steam and
+   SteamVR running, battery 99%, no nested desktop/runtime and no test lock.
+2. Compared the retained AppImage's SHA-256 with the live v0.4.17 release asset
+   digest: `b1b8eb82bf73a227b2cd36e8f0ef3a2ebdf7967c5853efb08a9634f38227015d`.
+   Extracted an independent copy; `cmp` confirmed its `frame_touch.py` matches
+   the base checkout. No payload was edited.
+3. Started the package's own AppRun, bundled server and Python on Xvfb `:139`
+   with private config/cache/data/profile, telemetry and update checks disabled,
+   and `--no-sandbox --disable-gpu`. Used the existing authorized `ssh frame`
+   identity. T3 preview opened the package server page but does not attach to
+   the existing Electron window. The literal Electron button test used the
+   same Playwright-over-loopback-CDP workflow as the earlier packaged tests.
+4. Acquired `/tmp/frame-test.lock` with atomic `mkdir` and wrote an owner marker.
+   Rechecked no nested runtime or Plasma was present. Started SteamOS's
+   `/usr/bin/steamos-nested-desktop` in the owned transient user unit
+   `fc-issue73-desktop-20261024.service`, using Steam's display/session variables.
+   `RuntimeMaxSec=180s`, `TimeoutStopSec=15s` and `KillMode=control-group` bounded
+   the session. This launches a desktop panel inside Game Mode; no full Desktop
+   Mode switch was sent.
+5. In the actual packaged Electron window, navigated Tools → Capture & Live →
+   Desktop and clicked Capture with `locator.click()`. The first click event
+   recorded `isTrusted=true`. The page selected the KDE compositor on `:0`;
+   the production screenshot path used window `62914560`. Requested the desktop
+   dashboard, read back focus/visibility, and clicked Capture again. Recorded
+   response metadata, fresh decoded image dimensions and canvas pixel range.
+   No direct screenshot API call was substituted for these button clicks.
+6. Ran the packaged `frame_touch.py panels` read-only over SSH to retain its
+   exact discovery result: one focused KDE compositor panel, app ID 0, 1920×1080,
+   display `:0`, with no diagnostic `why` field.
+
+## Cleanup and limits
+
+The owned desktop session ran **09:43:48–09:45:33 UTC** (105 seconds). Hid the
+dashboard to restore its initial hidden state, stopped only the owned unit,
+and verified it was unloaded/inactive with MainPID 0. No Plasma/KWin desktop
+process or nested runtime remained; gamescope's focusable/focused lists were
+empty again. Released only this task's lock, after checking its owner marker.
+
+Delayed readback at **09:46:39 UTC** confirmed the lock absent, Game Mode active,
+full Plasma inactive and the original Steam, vrserver and vrcompositor PIDs
+still running. The Game Mode service invocation was unchanged. Battery was
+99% at cleanup and 100%/Full on the delayed check. Closed both owned preview
+tabs, Electron and Xvfb; their processes and X socket were gone. No test server
+remained. No reboot, installation, security/global setting change or full
+Desktop Mode transition was performed.
+
+The nested desktop journal included gamescope WSI/Vulkan-hook warnings. No
+warning was dismissed. Capture produced nonblank compositor pixels, but this
+run does not assess their usability to a wearer. Private image files stayed
+outside the repository; only state and response metadata are published.
+
+The initial CDP `response.body()` read yielded zero bytes despite successful
+decoding in the page. The repeat verified the PNG Content-Length, fresh image
+dimensions/source/selection and a 2,011,278-byte PNG exported from the canvas.
+The initial raw-body measurement is a harness limitation, not evidence of a
+product capture failure. No Live video, Control input, physical monitor, FUSE
+mounting or hardware rendering was tested. Older SteamOS and other packages
+remain outside this observation.
+
+## Offline verification
+
+`python3 -m unittest discover -s tests -p test_touch.py -v`: **42 tests passed**,
+including the production page's Node panel behavior tests, duplicate-function
+guard, absent versus empty panel diagnostics, alternate displays, capture/input
+target validation and discovery deadlines. JSON parsing and `git diff --check`
+were also checked. No new regression test was added because this is an
+evidence-only change with no reproduced product defect.

docs/evidence/linux-pc-host-lxso2-2026-10-24.md

@@ -0,0 +1,114 @@
+# Linux PC host feasibility on lxso2, 2026-10-24
+
+**Blocked on this host's current desktop environment. No feature enabled and
+no feature PR opened.** Investigation for [issue #23](https://github.com/saphid/frame-control/issues/23),
+starting at `4e45648` (main after #154). This concerns flat desktop panels,
+not Linux PC VR streaming.
+
+## Decision
+
+The smallest useful candidate is one explicitly selected **whole screen**,
+captured through the ScreenCast portal's restricted PipeWire connection,
+encoded locally with GStreamer/x264, and sent to the existing viewer through
+the shared SSH controller. Input, individual windows and virtual displays
+would remain unsupported until separately verified. This candidate was **not
+implemented**: lxso2 currently cannot exercise the real capture permission path.
+
+Development packages could unblock compilation, but would not create a desktop,
+portal backend or consented screen. Synthetic encoding, an Xvfb screen grab or
+using the Frame as its own host would not verify Linux PC desktop capture.
+No host packages or services were changed.
+
+## Evidence
+
+Host: `lxso2`, Linux x86-64, kernel `6.8.0-139-generic`.
+
+- `DISPLAY`, `WAYLAND_DISPLAY` and `XDG_SESSION_TYPE` were unset. The user bus
+  was reachable at `/run/user/1000/bus`.
+- `/run/user/1000/pipewire-0` and `/run/user/1000/wayland-0` did not exist.
+  No processes matched Xorg, Xwayland, Xvfb, GNOME Shell, KWin Wayland, Weston,
+  PipeWire, WirePlumber or xdg-desktop-portal at the process check.
+- D-Bus `ListNames` returned D-Bus, systemd and anonymous connections, with no
+  `org.freedesktop.portal.Desktop`. `ListActivatableNames` also had no desktop
+  portal. These calls queried D-Bus itself without activating capture services.
+- `dpkg-query` found no `xdg-desktop-portal*` or `pipewire*` packages.
+  `libgstreamer1.0-0:amd64` was installed at `1.24.2-1ubuntu0.1`, but
+  `gstreamer1.0-tools` was uninstalled. `gst-launch-1.0` and `gst-inspect-1.0`
+  were absent from PATH. Xvfb was installed, but supplies no portal by itself.
+- `pkg-config --modversion` failed for `gstreamer-1.0`,
+  `gstreamer-app-1.0`, `gstreamer-video-1.0` and `libpipewire-0.3`.
+  `gio-unix-2.0` reported `2.80.0`.
+- `desktop/bundle/pc-host.so` did not exist.
+  `python3 desktop/build.py --with-x264 --out /tmp/frame-linux-pc-feasibility`
+  exited **1** before compilation: required GStreamer pkg-config modules were
+  missing. No native build or encoder runtime success is claimed.
+
+Reproduce the non-activating portal checks in the intended desktop user's
+session, using that session's actual runtime directory and bus:
+
+```sh
+gdbus call --session --dest org.freedesktop.DBus \
+  --object-path /org/freedesktop/DBus --method org.freedesktop.DBus.ListNames
+gdbus call --session --dest org.freedesktop.DBus \
+  --object-path /org/freedesktop/DBus --method org.freedesktop.DBus.ListActivatableNames
+pkg-config --modversion gstreamer-1.0 gstreamer-app-1.0 gstreamer-video-1.0 gio-unix-2.0
+```
+
+## Existing implementation reviewed
+
+- `ui/frame_pcview.py` selects PCView only on Windows and rejects Linux even
+  when enabled. Linux installers do not carry its native bundle.
+- `desktop/portal.c` creates a **RemoteDesktop** session, requests pointer and
+  keyboard devices, and selects monitors and windows (`types=3`). It is not
+  ScreenCast-only or screen-only. Its restricted fd/node and fresh-connection
+  handling are reusable.
+- `ui/frame_pc_agent.py` calls the selection a shared window or screen and
+  picks VA-API when the element is present, falling back to x264. A bounded
+  x264 slice needs explicit encoder policy and unsupported-input behavior;
+  exposing the existing Linux path alone would not meet that scope.
+- `app/main.js` starts Python with the inherited environment; it does not
+  supply a compositor, portal backend or capture permission.
+- `.github/workflows/pc-host.yml` installs native dependencies and tests
+  synthetic x264/protocol behavior with fake capture consent/input. This does
+  not establish interactive Linux desktop capture.
+- Issue #23 and its six existing comments distinguish prior synthetic
+  helper/viewer results from untested Linux desktop capture and consent.
+
+## Verification and limits
+
+`python3 -m unittest discover -s tests -p 'test_pc*.py' -v` exited **0**:
+27 tests ran successfully, with one additional native-class setup skip
+(`native PC libraries not built on this host`). Coverage includes the compiled
+C controller trace, Python adapters, grants and default-off/Windows-only gates.
+It does not prove native GStreamer capture or local-client streaming.
+
+No fake/local native stream, consent prompt, real desktop capture, Frame viewer
+run, benchmark, input or window mode was tested in this investigation. No SSH
+connection to the Frame was needed; no lock was acquired and no headset install,
+launch, stop or settings change was attempted. Issue #113 was left alone.
+No issue comments or other public messages were sent.
+
+## Concrete unblock and next slice
+
+1. Supply an interactive Linux desktop, physical or VM, with a working
+   ScreenCast portal/backend, PipeWire and accessible consent dialog. Installing
+   the portal frontend alone is insufficient. A VM can establish software
+   capture/x264 behavior while physical-host behavior remains unverified.
+2. Install the native dependencies listed in `pc-host.yml` in that environment
+   and build a local `--with-x264` bundle. Resolve x264 distribution
+   licensing/source obligations before shipping it: the current build labels
+   that option test-only and the Windows installer omits it.
+3. Implement a ScreenCast-only session with monitor-only selection, no
+   RemoteDesktop/device request, disabled input in protocol and viewer, hidden
+   window/virtual-display modes, and explicit x264 selection. Preserve the
+   default-off gate and existing Mac/Windows paths.
+4. Verify consent acceptance/refusal/cancellation, Stop/reopen, connection loss
+   and portal closure with a local client decoding actual captured content.
+   Run the shared benchmark and record results without inferring hardware or
+   physical laser behavior.
+5. Only after local capture works, acquire the shared Frame lock once and
+   follow [the headset procedure](../testing.md#headset-smoke-test) for a brief
+   viewer test. If occupied, leave the lock alone and defer device testing.
+
+These are prerequisites and proposed scope, not a ready feature. The Linux
+host request in #23 remains open.

docs/evidence/linux-vr/2026-09-28.txt

@@ -0,0 +1,47 @@
+Frame client feasibility, 2026-09-28
+SteamOS VERSION_ID=0.4.1 BUILD_ID=20260925.6191901; uname -m=aarch64
+SteamVR: vrserver log reports 2.18.1; process 2256 remained alive across checks.
+Base: dcf9689f6459e576d35fc507eb702ca6b2bf4dad (main).
+Unmodified upstream release APKs; installed with ui/frame_android.py install APK --vr.
+No Linux host attached. No pairing, streamed video, input, audio or worn-headset checks.
+Selected logcat lines only; timestamps in Android logs are UTC.
+
+WiVRn-release.apk
+https://github.com/WiVRn/WiVRn/releases/tag/v26.9
+sha256=1df6649ec77224fcc821af0ab4897222bdf3d7eb6ce6ad636461336724111331
+E/OpenXR-Loader( 1140): Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+I/WiVRn   ( 1140): [2026-09-28 12:07:58.987] [WiVRn] [info] Failed to create OpenXR instance version 1.1.58: XR_ERROR_EXTENSION_NOT_PRESENT
+E/OpenXR-Loader( 1140): Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+I/WiVRn   ( 1140): [2026-09-28 12:07:59.034] [WiVRn] [info] Failed to create OpenXR instance version 1.0.58: XR_ERROR_EXTENSION_NOT_PRESENT
+E/WiVRn   ( 1140): [2026-09-28 12:07:59.035] [WiVRn] [error] Error during initialization: Failed to create OpenXR instance: XR_ERROR_EXTENSION_NOT_PRESENT
+
+alvr_client_android.apk
+https://github.com/alvr-org/ALVR/releases/tag/v20.14.1
+sha256=be68feeb02665e3d69f1cdbcabf38ea4d15c42868a7ec6b5e698dbefee4e4e36
+E/OpenXR-Loader( 1139): Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+I/RustStdoutStderr( 1139): Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+E/[ALVR NATIVE-RUST]( 1139): ALVR panicked: What happened:
+E/[ALVR NATIVE-RUST]( 1139): panicked at alvr/client_openxr/src/lib.rs:220:10:
+E/[ALVR NATIVE-RUST]( 1139): called `Result::unwrap()` on an `Err` value: ERROR_EXTENSION_NOT_PRESENT
+
+Cleanup verified: both app directories, compatdata directories and Steam shortcuts absent.
+Both test containers stopped and removed. No Steam/SteamVR restart or global setting changes.
+
+Valve release notes fetched from ISteamNews/GetNewsForApp/v2 (appid=250820).
+
+SteamVR Beta Updated - 2.18.1
+https://steamstore-a.akamaihd.net/news/externalpost/steam_community_announcements/1844751498219787
+Added tethered Quest support over USB (must be used with Steam Link Beta)
+
+Introducing SteamVR 2.17
+https://steamstore-a.akamaihd.net/news/externalpost/steam_community_announcements/1843481262693486
+Adds initial support for USB streaming. Note: Requires new Steam Client Beta.
+Fix crash using Steam Link on Linux when games submit invalid textures.
+Improve streaming recovery when using Steam Link on Linux.
+
+SteamVR Beta Updated - 2.17.8
+https://steamstore-a.akamaihd.net/news/externalpost/steam_community_announcements/1842212951314598
+Fix crash using Steam Link on Linux when games submit invalid textures.
+Improve streaming recovery when using Steam Link on Linux.
+Adds initial support for USB streaming.
+USB streaming can be used without WiFi by opting into the Steam Client Beta.

docs/evidence/linux-vr/2026-09-29.txt

@@ -0,0 +1,29 @@
+Locked real-Frame repeat, 2026-09-29
+SteamOS 0.4.1, BUILD_ID 20260925.6191901; aarch64.
+mkdir /tmp/frame-test.lock succeeded before installs/launches; rmdir issued after cleanup.
+Preflight battery 44%, charging; before WiVRn 46%, before ALVR 47%, cleanup 47%.
+Original Steam PID 49823 and vrserver PID 49571 present after cleanup.
+Same unmodified upstream release APKs and SHA-256s as 2026-09-28.txt.
+Installer functions loaded from a613735 before checkout was fast-forwarded to current main.
+No compatibility layer injected. Per-app immersive Lepton instances, Steam shortcut launches.
+Headset unworn. No Linux gaming host. No pairing or streaming session reached.
+
+WIVRN: selected journal lines (local +1000 prefix, Android timestamps UTC).
+Sep 29 11:03:15 frame lepton-steamlaunch-2817846116[1967]: 09-29 01:03:15.202  1153  1181 E OpenXR-Loader: Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+Sep 29 11:03:15 frame lepton-steamlaunch-2817846116[1967]: 09-29 01:03:15.210  1153  1181 I WiVRn   : [2026-09-29 01:03:15.210] [WiVRn] [info] Failed to create OpenXR instance version 1.1.58: XR_ERROR_EXTENSION_NOT_PRESENT
+Sep 29 11:03:15 frame lepton-steamlaunch-2817846116[1967]: 09-29 01:03:15.248  1153  1181 E OpenXR-Loader: Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+Sep 29 11:03:15 frame lepton-steamlaunch-2817846116[1967]: 09-29 01:03:15.256  1153  1181 I WiVRn   : [2026-09-29 01:03:15.256] [WiVRn] [info] Failed to create OpenXR instance version 1.0.58: XR_ERROR_EXTENSION_NOT_PRESENT
+Sep 29 11:03:15 frame lepton-steamlaunch-2817846116[1967]: 09-29 01:03:15.257  1153  1181 E WiVRn   : [2026-09-29 01:03:15.257] [WiVRn] [error] Error during initialization: Failed to create OpenXR instance: XR_ERROR_EXTENSION_NOT_PRESENT
+Screenshot API exit 0; 1920x1080 uniformly dark image; no client scene visible.
+
+ALVR: selected journal lines (local +1000 prefix, Android timestamps UTC).
+Sep 29 11:03:36 frame lepton-steamlaunch-2831623938[1967]: 09-29 01:03:35.553  1139  1167 E OpenXR-Loader: Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+Sep 29 11:03:36 frame lepton-steamlaunch-2831623938[1967]: 09-29 01:03:35.553  1139  1165 I RustStdoutStderr: Error [GENERAL | xrCreateInstance | OpenXR-Loader] : LoaderInstance::CreateInstance, no support found for requested extension: XR_KHR_convert_timespec_time
+Sep 29 11:03:36 frame lepton-steamlaunch-2831623938[1967]: 09-29 01:03:35.611  1139  1167 E [ALVR NATIVE-RUST]: panicked at alvr/client_openxr/src/lib.rs:220:10:
+Sep 29 11:03:36 frame lepton-steamlaunch-2831623938[1967]: 09-29 01:03:35.611  1139  1167 E [ALVR NATIVE-RUST]: called `Result::unwrap()` on an `Err` value: ERROR_EXTENSION_NOT_PRESENT
+Screenshot API exit 0; 1920x1080 uniformly dark image; no client scene visible.
+
+Cleanup: both test app directories, compatdata, shadercache, containers and shortcuts absent.
+Capture output directory removed. No global settings changed; Steam/SteamVR not stopped.
+The shared lock was subsequently acquired by another thread (new directory timestamp 11:03:49 +1000).
+Native clients and Valve host streaming not exercised: no native build or Linux gaming host available.

docs/evidence/media-surround-2026-10-24.md

@@ -0,0 +1,142 @@
+# Media surround hardening: 2026-10-24
+
+PR [#51](https://github.com/saphid/frame-control/pull/51), branch
+`theatre-media-surround-hardening`, merged main `2ded4c5` without rebasing.
+Both fixes remain necessary on that main: an optional-surround error escapes
+`play()`, and a non-`RuntimeError` during overlay teardown skips the remaining
+handles and OpenVR shutdown.
+
+## Offline checks
+
+- Focused media suite: **23 tests passed** on Linux / Python 3.12.3.
+- Final full suite: **1,381 tests, OK (15 skipped)** in 145.384 s with
+  `PYTHONFAULTHANDLER=1 python3 -m unittest discover -s tests -v`.
+  The service-regression module passed **33 tests**. Player/server compilation
+  and `git diff --check` passed. Current macOS/Windows validation is left to CI.
+- The startup/upload, creation/setup, deferred-surround refusal and teardown
+  regression tests were also run with main's player implementation: they
+  failed as expected (six errors across subtests). The screen-refusal test
+  passed, confirming that actual screen failures still propagate.
+- The historical macOS failure was job
+  [109239733717](https://github.com/saphid/frame-control/actions/runs/36516462623/job/109239733717),
+  on `dac9dbc`, Python 3.12: 619 tests, three failures in artwork resolver
+  tests (`test_resolver_slot_released_when_thread_cannot_start`,
+  `test_timed_out_lookups_are_capped`,
+  `test_url_fetch_refuses_private_hosts_and_honours_deadline`). Media tests
+  passed. Late DNS workers retained semaphore slots; the first failed
+  assertion could also leak acquired slots into later tests.
+- Main already contains `8051687`'s wait-for-idle and unconditional slot
+  cleanup, preserved by `d546568`. The current artwork module passed all
+  **40 tests** locally. No additional artwork changes were needed.
+- The first full run completed **1,380 tests, 15 skipped**, with one failure:
+  `test_a_second_server_is_refused_until_the_first_exits` observed SIGSEGV
+  (`-11`) instead of exit 1. All 41 server tests passed on a focused rerun.
+  Main started daemon index/TLS workers before refusing a second server;
+  its existing shutdown notes document a race with OpenSSL interpreter exit.
+  This crash mechanism is inferred; the first run did not retain a native
+  fault trace. The subprocess assertion now retains stderr for diagnosis.
+  A deterministic regression now checks that rejection starts no listener,
+  cleanup sweep or background workers. It failed before moving the ownership
+  check ahead of startup work and passed afterwards.
+
+The surround retry now logs a refusal before discarding that cosmetic work.
+Creation, setup and first-upload failures also allow the screen to play;
+standby remains retryable, and screen errors remain fatal. Teardown tests
+exercise OpenVR errors, unexpected exceptions and a late `InterruptedError`,
+checking that all handles are attempted and shutdown runs.
+
+## Earlier blocked real Frame attempt
+
+Read-only SSH preflight: SteamOS **0.5.6**, BUILD_ID **20261015.6141207**;
+SteamVR server PID **297506**, compositor PID **297620**; existing media
+service `inactive/dead`, MainPID 0; battery **99%**, fuel gauge `Not charging`,
+charger `Full`. The shared lock was absent at preflight.
+
+The subsequent atomic `mkdir /tmp/frame-test.lock` failed with
+`FileExistsError(17, 'File exists')`: another session acquired it in between.
+The probe stopped before uploading files, launching media, creating overlays,
+or changing any state. The foreign lock was neither modified nor released.
+All generated fixtures remained on the computer and were then removed; no
+headset cleanup was necessary. Steam/SteamVR and the prior player state were
+left alone.
+
+## Follow-up real Frame smoke at the exact PR head
+
+**Passed, 2026-10-24 10:35:02–10:35:23 UTC**, with byte-identical media modules
+from **`5d551a81658d9ff14f49285c28609d506cbc20aa`**. This later run resolves
+the earlier lack of fresh playback evidence. No production code changed.
+The headset was unworn. SteamOS **0.5.6**, BUILD_ID **20261015.6141207**,
+SteamVR **2.18.2**; battery **100%, Full** before and after.
+
+Read-only preflight found Game Mode (`XDG_CURRENT_DESKTOP=gamescope`,
+`start-gamescope` running, no `plasmashell`), Steam/SteamVR running, no media
+overlays, and the installed media service inactive/not loaded. The test then
+acquired `/tmp/frame-test.lock` with atomic `mkdir`; it did not take over a
+foreign lock. Under the lock, those safety conditions were checked again.
+
+Only generated media and the PR's four unchanged modules were uploaded, under
+the test-owned, uid-1000 directory
+`/tmp/pr51-5d551a8-4c0976a52564-utfbk_m0/`. The clip was a **12 s, 30 fps,
+960×540 half-SBS H.264** MP4 with solid red/cyan eye images and **silent AAC**.
+It was generated with FFmpeg's `color`, `hstack` and `anullsrc` sources; no
+personal or external media was used.
+
+The exact `frame_media_remote.run()` Play/status/Stop path was exercised by
+importing its unmodified module and changing only its in-memory `ROOT`,
+`RUNTIME`, `STATUS` and `UNIT` constants to the isolated test locations and
+`frame-control-media-pr51-5d551a8-4c0976a52564.service`. The real
+`frame_media_player.py` ran unchanged with `--layout auto --theatre`, using
+`h264_v4l2m2m` and Pulse output. This checks the player and its systemd lifecycle;
+it does **not** reverify the HTTP/UI upload or runtime installer, nor the
+literal production unit name. The installed media runtime, log, status and
+library were preserved.
+
+- First Play: `starting` → `playing` → **`ended`**, **360 frames**, **160 dropped**,
+  **12.0397 s**, `running=false`. The drops were the normal unworn/standby
+  `SetOverlayRaw` retry path; no fault was forced. At 60 frames, dropped was 0.
+  `vrcmd --overlays` listed `framecontrol.media.surround` as **1×1 visible**
+  and `framecontrol.media.screen` as **visible**. These are SteamVR metadata,
+  not a wearer or eye-capture verification.
+- After EOF: unit **inactive/dead, not-found, MainPID 0**, no test player or
+  decoder, and neither owned overlay remained. Stop after EOF succeeded and
+  retained `ended`.
+- Second Play reached `playing`, 60 frames, 0 dropped. Explicit Stop returned
+  **`stopped`, 72 frames, 0 dropped, `running=false`**. Again the unit was
+  inactive/dead/not-found with MainPID 0, no player/decoder and no owned overlays.
+- The test unit's `ExecStart` and cgroup identified the unique temporary
+  runtime. First-run player/decoder PIDs were **309650/309655**; second-run
+  PIDs were **309805/309810**. Stop controlled only this dedicated test unit.
+  Its player log was empty; no surround refusal or teardown error was logged.
+
+### Uploaded SHA-256 values
+
+```text
+generated_SBS.mp4      1b39cac1d3b092b89657250c817019b68e87a474976ccd44aeb38e8eee44ffca
+frame_media.py         001e3158f4c3931794846b21f1e4cb553349d9326b4db1454a01976d446ad97a
+frame_media_player.py  86b0a140ebff857c2819c74d3ac45d1897735c585d44c7360ad6f18c2ecf2645
+frame_media_remote.py  b60386eb192d32594358246a4e665474c543600f2c564c2efd554ef38d7a631d
+frame_splat.py         f35750926f1149c41b95617a302012406d355c0dfdd4530438b0c42ee6d55daa
+```
+
+### Cleanup and limits
+
+The temporary directory, including its fixture, code, bytecode, status and log,
+was removed only after verifying that its player and decoder had exited. The
+transient unit was collected. The test released only its own lock after cleanup.
+All installed media runtime file hashes, including `player.log` and
+`status.json`, were unchanged. The installed `frame-control-media.service`
+remained inactive/not loaded. Steam **297826**, vrserver **297506**,
+vrcompositor **297620**, vrdashboard **297721**, and start-gamescope **296997**
+kept the same PIDs. The pre-existing overlay key/dimension/visibility/type
+inventory matched the final inventory, and all dashboard main panels remained
+`not_visible`. No dashboard command, wake request, global setting, reboot or
+Steam/SteamVR stop was issued.
+
+Cosmetic surround refusal and exceptional teardown remain **fake-tested**;
+no real refusal or teardown fault was induced. This short unworn-headset
+smoke does not verify appearance, eye isolation, comfort, audible sound/lip
+sync (the AAC was silent), sustained display performance, or the issue #28
+report of laggy 1080p video. It does not cover new H.265, photo or splat cases.
+Historical checks remain in the earlier PR #51 description and
+[media playback notes](../vr-video.md). The PR remains draft and unmerged
+for parent review and CI.

docs/evidence/mods-2026-09-28.md

@@ -0,0 +1,128 @@
+# Mod feasibility test, 2026-09-28
+
+**Verified observations**, with limits below. Device: `aarch64`, SteamOS
+`VERSION_ID=0.4.1`, `BUILD_ID=20260925.6191901`; Proton version file:
+`1788505046 proton-11.0-2c-arm64`; `vrcmd --stats`: SteamVR `2.18.1`.
+Times below are the Frame's AEST clock.
+
+## Inventory and allowed content
+
+`ssh frame 'python3 - owned' < ui/frame_steam.py` returned 868 games before
+the test. Beat Saber (620980) and Skyrim VR (611670) were absent. Half-Life 2:
+VR Mod – Episode One (2177750) was installed. Hogwarts Legacy (990080),
+Horizon Zero Dawn (1151640) and Horizon Forbidden West (2420110) were listed
+but not installed. The full personal library is not committed.
+
+**Documented, owner report after these tests:** Alex has Beat Saber on a
+Quest 2, which is charging. That copy was not accessed or inspected during
+this test. Its version, transfer path and Frame compatibility remain unknown;
+Steam ownership is still not established.
+
+Gravitas's public Steam metadata reported `is_free: true`, developer Galaxy
+Shark Studios, Windows only. Frame Control's existing Steam helper requested
+its install. Steam first returned free-license state 3, then config state 7,
+then queued the download. The helper did not accept state 3; a later read
+found state 7. The source of that transition was not observed. A later
+`install 1067310` returned `state: installed`. No purchase occurred.
+
+UEVR was downloaded from the author's [1.05 release](https://github.com/praydog/UEVR/releases/tag/1.05),
+not a mirror. `UEVR.zip` was 7,399,455 bytes. Its SHA-256 matched the author's
+`UEVR.zip.sha256` (a UTF-16 text file):
+
+```text
+af4f2f91306802d7ee4e8497d483a547ac8e9a3067dbafb81324100524215d3c
+```
+
+Microsoft's Windows x64 .NET runtime and Windows Desktop runtime 6.0.36 ZIPs
+were downloaded using URLs in the official release metadata. Both SHA-512
+hashes matched that metadata. They were extracted into a test-only user
+directory, not installed globally. No other mod manager was used.
+
+## Half-Life 2 VR: visible setup, not gameplay
+
+Launched the already-installed Episode One using
+`steam steam://rungameid/2177750`. The existing manifest recorded build
+25413453 and a shared base depot from app 658920, build 25413418.
+
+Selected fresh Steam / SteamVR log lines:
+
+```text
+22:07:50 proton waitforexitandrun .../Half-Life 2 VR/ep1vr.exe
+22:08:03 SetApplicationPid: Setting app steam.app.2177750 PID to 27990
+22:08:03 Successfully loaded binding file '.../hlvr/cfg/steamvr/bindings_frame.json' for app 'steam.app.2177750'.
+```
+
+The game's `episodicvr/console.log` reached `Creating VR hand HUD...`,
+`Creating VR weapon HUD...` and `Calibrating VR base position`. It also
+contained missing material/weapon warnings. SteamVR logged a missing
+`frame_hmd` binding as well as the successful controller binding load;
+controller input was not exercised.
+
+`ui/frame_vrshot.py` produced a stereo capture showing the mod's
+“First time setup” and “Dominant hand” dialog. This establishes visible
+startup, not a played level or comfortable performance. The capture includes
+room passthrough and is deliberately not published. The test's `hl2.exe`
+process was terminated; the pre-existing game installation was preserved.
+
+## Gravitas and UEVR: injection unverified
+
+The game was launched through Steam. The injector was then started in the
+same `steamapps/compatdata/1067310` prefix using the shipped
+`SteamLinuxRuntime_4-arm64/_v2-entry-point` and Proton 11 ARM64. The first
+attempt reported:
+
+```text
+Application: UEVRInjector.exe
+Message: You must install .NET to run this application.
+Architecture: x64
+App host version: 6.0.35
+.NET location: Not found
+```
+
+With `DOTNET_ROOT` and `DOTNET_ROOT_X64` pointing at the test-only Windows
+runtime directory, Proton loaded `Microsoft.NETCore.App/6.0.36` and
+`Microsoft.WindowsDesktop.App/6.0.36`. A 25-second launcher timeout was too
+short to establish whether the UI worked. A longer attempt produced a
+625×372 `UEVR` X11 window on display `:1`. This is window creation evidence,
+not a successful injection. That launcher returned exit 0; this was not
+treated as proof that a mod worked.
+
+A combined launch set `PROTON_REMOTE_DEBUG_CMD` to `UEVRInjector.exe` and
+ran Gravitas's `Drop.exe` in the same runtime/prefix. The process
+`SkyArk/Binaries/Win64/Drop-Win64-Shipping.exe` and a 1600×900 window titled
+`SkyArk (64-bit, PCD3D_SM5)` appeared. The launcher exited **1** before an
+injection or stereo game scene could be verified. Output included:
+
+```text
+Proton: Error while copying to ".../windows/system32/amdxcffx64.dll": No such file or directory
+Error [GENERAL | xrCreateInstance | OpenXR-Loader] : xrCreateInstance failed
+X Error of failed request: BadWindow (invalid Window parameter)
+  Major opcode of failed request: 10 (X_UnmapWindow)
+X Error of failed request: XI_BadDevice (invalid Device parameter)
+  Minor opcode of failed request: 28 (X_GetDeviceButtonMapping)
+```
+
+These errors do **not** establish an ARM64/FEX incompatibility. Other work
+was launching apps on the shared Frame. SteamVR's PIDs changed during the
+experiment; `ps` recorded the replacement `vrserver` and `vrcompositor`
+starting at **22:13:03**, corroborated by `steamvr.service` journal startup
+lines. This test did not request a Steam/SteamVR restart. The combined
+attempt ran at 22:14:17–22:14:27, after that restart. A stable, coordinated
+session is needed to distinguish launcher/environment problems from game or
+mod incompatibility.
+
+## Cleanup and remaining checks
+
+- No game executable or OpenVR DLL was replaced. No global runtime or power
+  setting was changed by this test. No R.E.A.L., OpenComposite or Beat Saber
+  payload was installed.
+- Removed the test-only UEVR/.NET directory and downloaded ZIPs from the
+  Frame. Final process checks found no `UEVRInjector.exe`,
+  `Drop-Win64-Shipping.exe`, `ep1vr.exe` or `hl2.exe`. SteamVR was running.
+- Gravitas and its Steam-created prefix remain installed for a repeat test;
+  the pre-existing HL2 VR install remains. Steam may retain normal shader
+  caches, logs and prefix temporary files.
+- Still unverified: UEVR injection and removal, R.E.A.L. releases and
+  permissions, OpenComposite, Beat Saber playback on either build, and our
+  own manager's end-to-end install/uninstall. No installer UI is justified
+  by these results. See the [support table and next checks](../mods.md).

docs/evidence/mods-2026-09-29.md

@@ -0,0 +1,122 @@
+# UEVR from Frame Control, 2026-09-29
+
+**Verified observations**, with limits below. Same device and software as
+[2026-09-28](mods-2026-09-28.md): aarch64, SteamOS `0.4.1`, BUILD_ID
+`20260925.6191901`, Proton `11.0-2c` ARM64, SteamVR `2.18.1`. Times are the
+Frame's AEST clock. Headset tests ran under the shared
+`/tmp/frame-test.lock`, taken 11:13–11:28, 11:33–11:49, 12:02–12:40,
+12:44–12:52 and 13:01–13:03. Battery 45 % →
+93 %, on charge throughout.
+
+**Not observed:** the VR image, head tracking and controller input. SteamVR
+reported `activity_level` 3 (user interaction timeout; the headset was not
+being worn) with `average_target_fps` 1. Every `frame_vrshot.py` stereo
+capture was a uniform dark frame. Frame submits prove the app is presenting
+to SteamVR, not that the image is correct.
+
+## Manual injection (11:13–11:28)
+
+Game launched with `steam steam://rungameid/1067310`. `UEVRInjector.exe` was
+started with the game process's Wine variables, and its WPF window drew
+through DXVK's D3D9. It listed `Drop-Win64-Shipping (pid: 320) (SkyArk
+(64-bit, PCD3D_SM5))`, a Wine-side process id.
+
+- `--attach=Drop-Win64-Shipping` didn't inject. The button still read
+  **Inject**, and the saved `OpenVRRadio=True` in `AppData/Local/praydog/…/user.config`
+  was not restored on the next start.
+- XTest clicks landed on the game: `XQueryPointer` reported child
+  `0x2000001` (the game) at the injector's coordinates, and
+  `XLowerWindow`/`XRaiseWindow`/`XSetInputFocus` didn't change that.
+- `XSendEvent` button events to the injector window worked. After OpenVR and
+  Inject, `/proc/<game>/maps` contained
+  `drive_c/frame26/uevr/UEVRBackend.dll` and `openvr_api.dll`, next to
+  Proton's `vrclient_x64.dll`. UEVR's log:
+
+```text
+[11:17:32.948] Hooking D3D11
+[11:17:33.020] Hooked DirectX 11
+[11:17:34.263] Framework initialized
+[11:17:34.475] [VR] Requested runtime: openvr_api.dll
+[11:17:39.791] UGameViewportClient::Draw called for the first time.
+[11:17:39.792] is stereo enabled called!
+```
+
+It also logged repeated `Failed to initialize Framework on DirectX 12` (probing
+before it chose D3D11) and failed Unreal scans, for example `Failed to locate
+r.EnableStereoEmulation cvar` and `Failed to find FSceneView constructor`.
+SteamVR loaded UEVR's action manifest and `bindings_oculus_touch.json` for
+`steam.app.1067310`. `vrcmd --stats` then showed `"key" :
+"steam.app.1067310"` with `frame_submits` 4439, then 5506 a few seconds later.
+
+A second session's injector exited within about 20 seconds. The third,
+started fresh, injected again (`frame_submits` 1412). After the game was
+stopped, a plain launch had no UEVR modules and no SteamVR scene app. All test
+files were removed.
+
+## Through Frame Control (11:33–11:49)
+
+Local `ui/server.py` against the `frame` alias. First the API, then the
+page's **VR mod** dialog, driven with a headless Chromium:
+
+| Step | Result |
+|---|---|
+| `status` for 2177750 (HL2 VR) | `eligible: false`; `install` refused ("doesn't look like an Unreal Engine game") |
+| `install` for 1067310 | 3 s. Three downloads, hashes matched, receipt written |
+| `start`, game running | First run refused: `the UEVR window is 960 px wide, not 625`. It was measured before WPF laid it out; `start` now waits for the width to settle. Rerun: injected, `frame_submits` 27 (36 s) |
+| `uninstall` while running | Refused: "the game is running; quit it first" |
+| `start`, game not running | Launched the game, injected, `frame_submits` 45 (55 s) |
+| UI: Remove, Install | Worked; the prefix listing matched its pre-install state except an empty `UnrealVRMod`, which uninstall now also removes |
+| UI: Play in VR | Failed once: the injector died with `Process terminated. … Resource name: Arg_AccessViolationException`, after `Fontconfig error: No writable cache directories` (it had no `HOME`). Fixed by keeping the normal environment under the game's (the relaunch-on-failure added next is gone with the GUI injector; see below) |
+| UI: Play in VR ×4 | 4 of 4 injected. The three cold starts took 54, 58 and 58 s; frame submits 56, 71, 80 |
+| UI: Remove | `drive_c`, `AppData/Roaming` and `AppData/Local` listings matched the pre-install state; download cache and receipt gone |
+
+## The GUI injector wasn't reliable (12:02–12:40)
+
+After review fixes, cold starts through the API with UEVR's own injector:
+
+- Batches of 4, 6 and 8 runs: 3/4, 4/6 and 6/8 injected. A retry that
+  relaunched the injector didn't rescue a bad session. In both failures of
+  the last batch, the first injector ignored the clicks and the next two
+  never showed a window within 60 s.
+- Captures of the ignoring injector (`xwd`) showed its first-drawn frame,
+  with OpenVR still unselected. The injector's log had no error.
+
+Lock released at 12:40 before redesigning.
+
+## Frame Control's own injector (12:44–12:52)
+
+`start` now runs `frame_inject.py` under python.org's embeddable Python
+3.14.7 (SHA-256 `d297e5ff…1f15`, matching python.org's release-file API), in
+the game's Wine session. The old install was removed and the new one
+installed without the headset lock, since neither launches anything. The
+prefix listing after removal matched the pre-install state; the new install
+is 47 MB.
+
+| Step | Result |
+|---|---|
+| API `start`, cold | Injected in 35 s, `frame_submits` 39. UEVR log: `Hooked DirectX 11`, `Framework initialized`, `Requested runtime: openvr_api.dll`; `config.txt` has `Frontend_RequestedRuntime=openvr_api.dll` |
+| API `start` ×8, cold | **8/8** injected, 33–34 s each; `frame_submits` 33–42 at the check |
+| UI: dialog while running | "UEVR is running in the game now." Remove disabled (screenshot in `docs/img/uevr-dialog.png`) |
+| UI: Remove → Install → Play in VR → Remove | Each worked; Play in VR injected (`frame_submits` 106 a few seconds later) |
+| After the last Remove | `drive_c`, `AppData/Roaming` and `AppData/Local` listings matched the pre-install state; download cache and receipts gone; no game or `python.exe` processes. The empty `/tmp/frame-control-mods.lock` was deleted by hand (tmpfs) |
+
+Battery 98–100 % on charge. Lock released at 12:52.
+
+## After the second review (13:01–13:03)
+
+`frame_inject.py` now declares every Win32 signature, checks each result,
+frees its remote buffers and closes its handles; uninstall accepts only our
+folder and UEVR's own settings folders. Rechecked: install; three cold starts
+injected in 35, 34 and 33 s (`frame_submits` 42, 38, 47), UEVR logging
+`Framework initialized` and `Requested runtime: openvr_api.dll`; uninstall
+left `drive_c`, `AppData/Roaming` and `AppData/Local` as before, with no cache,
+receipts or processes. Frame Control's injector total: 12 of 12 cold starts
+through the API, plus the UI run.
+
+## Left on the Frame
+
+- Gravitas (free, 7.4 GB, installed 2026-09-28 for this work) is still
+  installed; nothing else from this work is left.
+- No `UEVRInjector.exe` or game processes were left running. Steam and
+  SteamVR were running at the end.
+- The test lock was released at 13:03.

docs/evidence/pad-gamescope-2026-10-24.md

@@ -0,0 +1,178 @@
+# Keyboard and trackpad through gamescope, 2026-10-24
+
+PR: [#66](https://github.com/saphid/frame-control/pull/66), `pad-gamescope`.
+Parent/main: v0.4.18 commit `0da1fe5`. Merge commit: `1737366`, with parents
+`cba23fb` (the existing PR) and `0da1fe5` (main). No history was rewritten.
+
+## Merge and implementation
+
+Both `/api/input` (keyboard/trackpad) and `/api/touch` (live-view Control)
+start and poll the gamescope helper. KDE Connect starts only when Unicode
+typing needs it. The existing ordered, bounded queue and switch cancellation
+remain in place; cross-service typing order is an estimate, not an application
+acknowledgement.
+
+The merge keeps main's intended-device validation and work reservation before
+a GET starts an input helper, immutable SSH routes, launch generations and
+serialized writes. Switching headsets also stops the power report and resets
+both input agents and queued typing before publishing the new route. The page
+keeps main's Tools sections, clipboard controls and single instances of the
+keyboard/trackpad and VR tools, with the PR's gamescope help text.
+
+The start/status regression tests now exercise the gamescope helper for both
+endpoints. An explicit `/api/input` test checks that start and poll use that
+helper without starting KDE Connect. Existing stale/missing-headset and
+route-reservation tests remain active.
+
+## Real Frame: focused click and ASCII keys received
+
+Host: lxso2, `ssh frame`. SteamOS **0.5.6**, BUILD_ID **20261015.6141207**,
+SteamVR **2.18.2**. At **11:05 UTC**, Game Mode was active, full Plasma was
+inactive, Steam and SteamVR were running, battery was **99%**, and gamescope's
+focusable/focused window lists were empty. The shared test lock was absent.
+Existing X11 tools and libX11 were available; Tk could not load its library.
+
+At **11:09:23 UTC**, an initial read-only preflight saw no focused window
+but activity level **0** (idle), rather than the required **3** (standby), and
+aborted before lock acquisition or input. At **11:09:57 UTC**, another task
+held the shared lock with a focused panel; that lock and panel were left alone.
+
+At **11:20:22 UTC**, read-only checks found the lock absent, no focused or
+focusable windows, activity **3** and battery **98%**. The bounded probe ran at
+**11:20:37 UTC** against implementation commit `5641d3c`:
+
+1. Rechecked empty focus and standby, acquired `/tmp/frame-test.lock` with
+   atomic `mkdir`, wrote a unique owner marker and rechecked both conditions.
+2. Created only a disposable 640×400 X11 event-recorder window on `:0`, tagged
+   with test app ID `2000999066`. It had a 45-second alarm and closed on stdin
+   EOF. No existing application, full desktop or dashboard was started.
+3. Waited for gamescope to report that exact window (`62914561`) focused.
+   Started the production server's `TouchAgent` over SSH; it reported ready.
+4. Called production `server.remote_touch` for positioning, then
+   `server.remote_input` with a left click, `Frame66` and the Enter key button.
+   Both responses reported `sent: true`. More importantly, the **window itself
+   recorded ButtonPress/Release (button 1), the ASCII key events in order and
+   Return**. `XLookupString` decoded exactly `Frame66\r`. The events were
+   delivered through gamescope's EIS socket, not fabricated with XSendEvent.
+5. Closed the helper by EOF and waited for exit, closed the recorder, checked
+   empty focus and standby, then removed only the owner-matching test lock.
+
+[State and received events](pad-gamescope-2026-10-24/readback.json) and the
+[probe](pad-gamescope-2026-10-24/probe.py)/[X11 recorder](pad-gamescope-2026-10-24/recorder.py)
+are retained. The archived scripts use checkout-relative source paths; the
+recorded run used the same harness from `/tmp`. Motion records omit an unused
+field that only has meaning for key/button events.
+
+Delayed readback at **11:21:46 UTC** confirmed no test lock or recorder process,
+empty focused/focusable lists, Game Mode active, full Plasma inactive, activity
+3 and battery 98%. The original Steam and vrserver PIDs were unchanged. No
+install, security/global setting change, dashboard/session switch, reset or
+reboot was performed. No headset helper or owned lock remained.
+
+This establishes **focused-panel click and ASCII key delivery on `:0`**.
+It does not establish wearer-visible presentation, Unicode delivery or GUI
+interaction. The absolute-position setup reached the recorder's edge
+(639,399), rather than its centre; pixel-accurate absolute pointing is **not**
+proved by this small-window probe. The trackpad click and typed keys still
+arrived in the owned focused window. The original PR's earlier acceptance-only
+observations remain historical; this observation adds actual window events.
+
+## Offline checks and remaining limits
+
+- `python3 -m unittest discover -s tests -p test_input.py -v`: **58 passed**.
+- `python3 -m unittest discover -s tests -p test_touch.py -v`: **43 passed**.
+- `python3 -m unittest discover -s tests -p test_service_regressions.py -v`:
+  **34 passed**.
+- `python3 -m unittest discover -s tests -v`: **1,403 ran, OK, 15 skipped**
+  (Linux x86_64, Python 3.12; 150.825 seconds).
+- Full fake-Frame e2e in task-specific Docker project `frame-control-pr66`:
+  **47 passed** after the lock fix (192.270 seconds). Both task containers,
+  their network and all three volumes were removed afterward. The run emitted
+  an unclosed test-socket ResourceWarning; the suite returned OK.
+- Node page suites: `ctrl_gestures.mjs`, `pad_queue.mjs`, `desk_panels.mjs`
+  passed, using the production page functions.
+- `node --test app/test/*.test.js`: **3 test files passed**.
+- `node --test site/test/*.test.mjs`: **2 test files passed**.
+- Python compilation, desktop/site JavaScript syntax and `git diff --check`
+  passed. Fake-Frame e2e and exact-head CI results are recorded in the PR after completion.
+
+The first full regression run executed 1,401 tests and found two tests still
+expecting `/api/input` to start the old KDE Connect helper. They were updated
+to the intended gamescope route. The final full run includes the lazy-KDE
+regression above and the lock-order regression below. The initial restricted-sandbox input run could not open
+loopback sockets; the focused rerun with managed network access passed.
+
+Review of the merged code then found a lock inversion: the Unicode worker
+held the pad-send lock while `InputAgent.start()` acquired the route lock,
+whereas a headset switch held the route lock before resetting the pad. A
+bounded subprocess regression reproduced the deadlock with the real
+`InputAgent.send/start` methods and an offline launch stub. Unicode delivery
+and resets now take the route lock before the pad lock; the route lock is
+reentrant so an agent can capture its route inside that reservation. The new
+regression passed after the fix, as did all **58 focused input tests** and
+the **1,403-test full suite** (15 skipped). The local fake-Frame suite also
+passed **47 tests after this fix**. Exact-head CI results are recorded in the PR.
+
+Remaining device work requires an idle, available Frame and the shared lock:
+verify Unicode in a real text field, ordering under real typing load and
+precise absolute pointing for small panels. Worn-headset presentation,
+packaged Electron pointer lock and Windows GUI execution remain separate
+checks. Automated Windows/macOS CI does not establish those interactions.
+
+
+## Review round 2: queue saturation and failure recovery
+
+The coordinator identified silent eviction in both `_queue_for_kde()` and the
+worker's retry path. Both sliced the oldest accepted events off at 200 entries,
+even though the page had already received `sent: true` and discarded its copy.
+
+Admission now serializes concurrent requests, checks capacity before any pointer
+or keyboard send, and returns `sent: false, state: waiting` if the whole batch
+will not fit. Text stays in the bounded queue while in flight, and is removed
+only after the helper accepts it. Rejected mixed batches send no clicks; retrying
+them cannot duplicate clicks already sent by this server. The page polls until
+it can retry. Pointer input stays usable while accepted text is pending.
+
+The old worker also left its worker marker and one-hour timing sentinel behind
+if `send()` raised. Failure/timeout handling now retains unsent text, clears the
+worker/timing state and exposes an error through input status. The page polls
+accepted text without requiring another keypress. **Try again** explicitly
+restarts the retained queue. Thread-start failures follow the same retention
+rule. A stale worker's exception cannot change the new route's state.
+
+The proposed send-to-enqueue headset-switch race was not reachable through the
+normal HTTP switch path: `Handler.do_POST()` reserves `working(meant)` across
+both operations; `devices_post()` shares `_work_lock` and refuses a moving
+operation while work is active. Connector configuration/reconnect paths defer
+changed headsets while work runs. A production-handler regression attempts a
+switch at both send and enqueue and passes even on the previous implementation.
+No separate connector change was needed. Atomic queue admission now uses the
+existing route-before-pad lock order as well, because starting either input
+agent can capture its route synchronously.
+
+Three deterministic saturation regressions fail on `215db7b` and pass with the
+fix: capacity during the typing delay, capacity during an unsuccessful-send
+retry, and two concurrent producers competing for the last slots. They check
+exact accepted event sequences, reject a mixed click/text batch before its
+pointer effects, and verify delivery exactly once after retry. Additional tests
+cover explicit recovery after timeout, helper errors, send exceptions and
+thread-start failure, stale-worker isolation, HTTP status/start behavior, and
+the production page's polling/error behavior.
+
+No new active headset test was performed: this change affects host queue
+admission/recovery and status handling, not Frame event translation or injection.
+The earlier real click/ASCII evidence remains scoped to its recorded commit.
+Real Unicode, packaged Electron pointer lock, Windows GUI, wearer-visible
+presentation and precise small-window absolute positioning remain unverified.
+`sent: true` means accepted by this server, not application delivery. The queue
+is in memory; switching headsets cancels it and server exit loses it. A transport
+failure after a partial write can still make delivery ambiguous; this is not an
+end-to-end exactly-once protocol.
+
+Round 2 local verification: **141 focused input/touch/service tests passed**
+(62 input, 43 touch, 36 service; 20.061 seconds), and **1,409 server tests ran, OK, 15 skipped**
+(Linux x86_64, Python 3.12, 153.198 seconds). All three production-page Node
+suites passed; app tests passed (3 files), site tests passed (2 files), Python
+compilation and `git diff --check` passed. The existing skipped tests require
+zsh, macOS/Swift or built native PC libraries. Current-head CI is tracked in
+PR #66; the previous 47-test local fake-Frame run above is historical.

docs/evidence/pad-gamescope-2026-10-24/probe.py

@@ -0,0 +1,129 @@
+"""Active real-Frame evidence probe: aborts unless idle, then owns the shared lock.
+
+Run manually on an authorised host: python3 docs/evidence/pad-gamescope-2026-10-24/probe.py
+The recorded run used /tmp paths; archived paths are relative to this checkout.
+"""
+import base64
+import datetime
+import json
+import os
+from pathlib import Path
+import queue
+import shlex
+import subprocess
+import sys
+import tempfile
+import threading
+import time
+import uuid
+
+ROOT = Path(__file__).resolve().parents[3]
+data = tempfile.TemporaryDirectory(prefix='pr66-live-')
+os.environ.update(FRAME_CONTROL_DATA_DIR=data.name, FRAME_CONTROL_TELEMETRY='0', FRAME_PRIVATE_SSH='1')
+sys.path.insert(0, str(ROOT / 'ui'))
+import server
+
+SSH = ['ssh', '-o', 'BatchMode=yes', '-o', 'ConnectTimeout=5', 'frame']
+owner = 'pr66-' + uuid.uuid4().hex
+result = {'time': datetime.datetime.now(datetime.timezone.utc).isoformat(), 'owner': owner,
+          'base': '0da1fe5', 'route': 'production server.remote_input -> TouchAgent SSH -> frame_touch.py -> gamescope EIS',
+          'events': []}
+recorder = None
+locked = False
+rows = queue.Queue()
+
+def ssh(cmd):
+    return subprocess.run([*SSH, cmd], capture_output=True, text=True, timeout=15, check=True).stdout
+
+def focus():
+    return json.loads(server.ssh('python3 - focus', stdin=(ROOT/'ui/frame_touch.py').read_text(), timeout=15))
+
+def activity():
+    return json.loads(ssh('/opt/steamvr/bin/linuxarm64/vrcmd --stats'))[0]['activity_level']
+
+def read_rows():
+    for raw in recorder.stdout:
+        rows.put(json.loads(raw))
+
+def collect(seconds):
+    end = time.monotonic() + seconds
+    while time.monotonic() < end:
+        try:
+            result['events'].append(rows.get(timeout=max(0.01, end-time.monotonic())))
+        except queue.Empty:
+            break
+
+try:
+    result['initial_focus'] = focus()
+    result['initial_activity'] = activity()
+    assert not result['initial_focus'].get('window'), 'existing focused panel; do not interrupt'
+    assert result['initial_activity'] == 3, 'headset is not in standby'
+    ssh('mkdir /tmp/frame-test.lock && printf %s ' + shlex.quote(owner) + ' > /tmp/frame-test.lock/owner')
+    locked = True
+    result['lock_acquired'] = True
+    assert not focus().get('window') and activity() == 3, 'session changed during lock acquisition'
+    code = base64.b64encode(Path(__file__).with_name('recorder.py').read_bytes()).decode()
+    command = 'python3 -u -c ' + shlex.quote("import base64;exec(compile(base64.b64decode('" + code + "'),'pr66-recorder','exec'))")
+    recorder = subprocess.Popen([*SSH, command], stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+                                stderr=subprocess.PIPE, text=True)
+    threading.Thread(target=read_rows, daemon=True).start()
+    initial = rows.get(timeout=8)
+    result['recorder'] = initial
+    assert initial.get('ready'), initial
+    window = initial['window']
+    for _ in range(20):
+        current = focus()
+        if current.get('window') == window:
+            break
+        time.sleep(0.2)
+    result['focused_panel'] = current
+    assert current.get('window') == window and current.get('display') == ':0', 'owned panel did not obtain focus; no input sent'
+    server.remote_input({})
+    for _ in range(50):
+        if server._touch.status.get('state') in ('ready', 'error'):
+            break
+        time.sleep(0.1)
+    result['agent_status'] = dict(server._touch.status)
+    assert result['agent_status'].get('state') == 'ready', result['agent_status']
+    target = {'window': window, 'display': ':0'}
+    assert focus().get('window') == window and activity() == 3
+    result['position_response'] = server.remote_touch({'events': [dict(target, fx=0.5, fy=0.5)]})
+    time.sleep(0.2)
+    assert focus().get('window') == window and activity() == 3
+    result['pad_response'] = server.remote_input({'events': [{'singleclick': True}, {'key': 'Frame66'}, {'specialKey': 12}]})
+    collect(2)
+    received = result['events']
+    result['received_text'] = ''.join(e.get('text', '') for e in received if e.get('type') == 2)
+    result['click_received'] = any(e.get('type') == 4 and e.get('code') == 1 and e.get('window') == window for e in received)
+    result['release_received'] = any(e.get('type') == 5 and e.get('code') == 1 and e.get('window') == window for e in received)
+    result['passed'] = result['click_received'] and result['release_received'] and result['received_text'] == 'Frame66\r'
+    assert result['passed'], 'event recorder did not observe expected click and keys'
+except Exception as e:
+    result['error'] = str(e)
+finally:
+    proc = server._touch.proc
+    server.reset_pad_route()
+    if proc:
+        try:
+            proc.wait(timeout=8)
+            result['input_helper_exited'] = True
+        except subprocess.TimeoutExpired:
+            proc.terminate()
+            proc.wait(timeout=5)
+            result['input_helper_terminated'] = True
+    if recorder:
+        recorder.stdin.close()
+        recorder.wait(timeout=8)
+        collect(0.2)
+        result['recorder_exit'] = recorder.returncode
+        result['recorder_stderr'] = recorder.stderr.read()[-1000:]
+    if locked:
+        result['final_focus'] = focus()
+        result['final_activity'] = activity()
+        ssh('test "$(cat /tmp/frame-test.lock/owner)" = ' + shlex.quote(owner)
+            + ' && rm /tmp/frame-test.lock/owner && rmdir /tmp/frame-test.lock')
+        result['owned_lock_released'] = True
+    Path('/tmp/pr66-live.json').write_text(json.dumps(result, indent=2) + '\n')
+    print(json.dumps(result, indent=2))
+    data.cleanup()
+sys.exit(0 if result.get('passed') else 1)

docs/evidence/pad-gamescope-2026-10-24/readback.json

@@ -0,0 +1,280 @@
+{
+  "time": "2026-10-24T11:20:37.392607+00:00",
+  "owner": "pr66-7c2a8e8851f449bcb0bb6a040be94d99",
+  "base": "0da1fe5",
+  "route": "production server.remote_input -> TouchAgent SSH -> frame_touch.py -> gamescope EIS",
+  "events": [
+    {
+      "type": 6,
+      "window": 62914561,
+      "x": 320,
+      "y": 200,
+      "synthetic": false
+    },
+    {
+      "type": 6,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "synthetic": false
+    },
+    {
+      "type": 4,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 1,
+      "synthetic": false
+    },
+    {
+      "type": 5,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 1,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 50,
+      "synthetic": false,
+      "text": "",
+      "keysym": 65505
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 41,
+      "synthetic": false,
+      "text": "F",
+      "keysym": 70
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 41,
+      "synthetic": false
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 50,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 27,
+      "synthetic": false,
+      "text": "r",
+      "keysym": 114
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 27,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 38,
+      "synthetic": false,
+      "text": "a",
+      "keysym": 97
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 38,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 58,
+      "synthetic": false,
+      "text": "m",
+      "keysym": 109
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 58,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 26,
+      "synthetic": false,
+      "text": "e",
+      "keysym": 101
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 26,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 15,
+      "synthetic": false,
+      "text": "6",
+      "keysym": 54
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 15,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 15,
+      "synthetic": false,
+      "text": "6",
+      "keysym": 54
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 15,
+      "synthetic": false
+    },
+    {
+      "type": 2,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 36,
+      "synthetic": false,
+      "text": "\r",
+      "keysym": 65293
+    },
+    {
+      "type": 3,
+      "window": 62914561,
+      "x": 639,
+      "y": 399,
+      "code": 36,
+      "synthetic": false
+    },
+    {
+      "cleaned": true
+    }
+  ],
+  "initial_focus": {
+    "window": null
+  },
+  "initial_activity": 3,
+  "lock_acquired": true,
+  "recorder": {
+    "ready": true,
+    "window": 62914561,
+    "pid": 317210,
+    "display": ":0",
+    "appid": 2000999066
+  },
+  "focused_panel": {
+    "window": 62914561,
+    "display": ":0",
+    "name": "Frame Control PR66 disposable input probe",
+    "x": 0,
+    "y": 0,
+    "width": 640,
+    "height": 400,
+    "root": [
+      1920,
+      1080
+    ],
+    "app": 2000999066
+  },
+  "agent_status": {
+    "state": "ready",
+    "focus": 62914561
+  },
+  "position_response": {
+    "state": "ready",
+    "focus": 62914561,
+    "sent": true
+  },
+  "pad_response": {
+    "state": "ready",
+    "focus": 62914561,
+    "sent": true
+  },
+  "received_text": "Frame66\r",
+  "click_received": true,
+  "release_received": true,
+  "passed": true,
+  "input_helper_exited": true,
+  "recorder_exit": 0,
+  "recorder_stderr": "",
+  "final_focus": {
+    "window": null
+  },
+  "final_activity": 3,
+  "owned_lock_released": true,
+  "implementation_commit": "5641d3c316dfe225321f7233840cc83ff8c3f527",
+  "device": {
+    "steamos": "0.5.6",
+    "build_id": "20261015.6141207",
+    "steamvr": "2.18.2",
+    "battery_before": 98,
+    "battery_after": 98
+  },
+  "delayed_cleanup": {
+    "time": "2026-10-24T11:21:46Z",
+    "shared_lock_absent": true,
+    "owned_recorder_absent": true,
+    "game_mode": "active",
+    "full_plasma": "inactive",
+    "steam_pid": 297826,
+    "vrserver_pid": 297506,
+    "focusable_windows": [],
+    "focused_windows": [],
+    "activity_level": 3
+  },
+  "limits": [
+    "No wearer or packaged Electron/GUI interaction",
+    "ASCII only; Unicode and cross-service ordering not tested on device",
+    "The positioning setup reached the recorder edge (639,399); pixel-accurate absolute targeting is not established by this probe"
+  ]
+}

docs/evidence/pad-gamescope-2026-10-24/recorder.py

@@ -0,0 +1,82 @@
+"""Disposable X11 event recorder used for the PR #66 focused-input observation."""
+import ctypes as C
+import json
+import os
+import select
+import signal
+import time
+
+X = C.CDLL('libX11.so.6')
+P, U = C.c_void_p, C.c_ulong
+for name, restype, args in [
+    ('XOpenDisplay', P, [C.c_char_p]), ('XDefaultRootWindow', U, [P]),
+    ('XCreateSimpleWindow', U, [P, U, C.c_int, C.c_int, C.c_uint, C.c_uint, C.c_uint, U, U]),
+    ('XInternAtom', U, [P, C.c_char_p, C.c_int]),
+    ('XChangeProperty', C.c_int, [P, U, U, U, C.c_int, C.c_int, P, C.c_int]),
+    ('XStoreName', C.c_int, [P, U, C.c_char_p]),
+    ('XSelectInput', C.c_int, [P, U, C.c_long]), ('XMapWindow', C.c_int, [P, U]),
+    ('XFlush', C.c_int, [P]), ('XPending', C.c_int, [P]),
+    ('XConnectionNumber', C.c_int, [P]), ('XNextEvent', C.c_int, [P, P]),
+    ('XLookupString', C.c_int, [P, P, C.c_int, P, P]),
+    ('XDestroyWindow', C.c_int, [P, U]), ('XCloseDisplay', C.c_int, [P]),
+]:
+    fn = getattr(X, name)
+    fn.restype, fn.argtypes = restype, args
+
+class InputEvent(C.Structure):
+    _fields_ = [('type', C.c_int), ('serial', U), ('send_event', C.c_int),
+               ('display', P), ('window', U), ('root', U), ('subwindow', U),
+               ('time', U), ('x', C.c_int), ('y', C.c_int), ('x_root', C.c_int),
+               ('y_root', C.c_int), ('state', C.c_uint), ('code', C.c_uint),
+               ('same_screen', C.c_int)]
+
+class Event(C.Union):
+    _fields_ = [('type', C.c_int), ('input', InputEvent), ('pad', C.c_long * 24)]
+
+def say(**row):
+    print(json.dumps(row), flush=True)
+
+def end(*_):
+    raise TimeoutError('probe ended')
+
+signal.signal(signal.SIGTERM, end)
+signal.signal(signal.SIGALRM, end)
+signal.alarm(45)
+d = X.XOpenDisplay(b':0')
+assert d, 'X display unavailable'
+w = 0
+try:
+    w = X.XCreateSimpleWindow(d, X.XDefaultRootWindow(d), 0, 0, 640, 400, 0, 0, 0x224466)
+    for name, value in [(b'STEAM_GAME', 2000999066), (b'_NET_WM_PID', os.getpid())]:
+        val = U(value)
+        X.XChangeProperty(d, w, X.XInternAtom(d, name, 0), 6, 32, 0, C.byref(val), 1)
+    X.XStoreName(d, w, b'Frame Control PR66 disposable input probe')
+    X.XSelectInput(d, w, 1 | 2 | 4 | 8 | 64 | 32768 | 2097152)
+    X.XMapWindow(d, w)
+    X.XFlush(d)
+    say(ready=True, window=w, pid=os.getpid(), display=':0', appid=2000999066)
+    while True:
+        while X.XPending(d):
+            event = Event()
+            X.XNextEvent(d, C.byref(event))
+            if event.type in (2, 3, 4, 5, 6):
+                e = event.input
+                row = dict(type=event.type, window=e.window, x=e.x, y=e.y,
+                           synthetic=bool(e.send_event))
+                if event.type != 6:
+                    row['code'] = e.code
+                if event.type == 2:
+                    buf, keysym = C.create_string_buffer(32), U()
+                    n = X.XLookupString(C.byref(e), buf, 32, C.byref(keysym), None)
+                    row.update(text=buf.raw[:n].decode('utf-8', 'replace'), keysym=keysym.value)
+                say(**row)
+        ready, _, _ = select.select([0, X.XConnectionNumber(d)], [], [], 0.2)
+        if 0 in ready and not os.read(0, 1024):
+            break
+except TimeoutError:
+    pass
+finally:
+    if w:
+        X.XDestroyWindow(d, w)
+    X.XCloseDisplay(d)
+    say(cleaned=True)

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/panel-layout-2026-10-24.md

@@ -0,0 +1,168 @@
+# Saved panel layouts: feasibility recheck, 2026-10-24
+
+Issue: [#31](https://github.com/saphid/frame-control/issues/31). Base: main
+`5b47cd3`. This investigation covers spatial save/restore for existing
+Steam/gamescope panels without another overlay application.
+
+## Decision and user behavior
+
+Keep saved layouts unavailable. The current Frame exposes some geometry,
+including a standing-space coordinate transform, but this investigation did
+not establish a complete dock-state snapshot or a controlled restore path for
+these panels. The existing companion/headset switcher still lists panels and
+requests focus; users arrange them with SteamVR's dashboard controls. No layout
+file, new control, overlay application or background service is added.
+
+This is a limit of the investigated route, not proof that every native
+implementation is impossible. In particular, failure of
+`GetOverlayTransformAbsolute` does **not** mean all pose readback is denied.
+
+## Device and read-only results
+
+SteamOS **0.5.6**, BUILD_ID **20261015.6141207**; `vrcmd --version`:
+**2.18.2**. `gamescope-session.service` was active and
+`plasma-workspace.target` inactive: Game Mode. gamescope used the OpenVR backend
+and `--virtual-connector-strategy PerAppId`. Battery was 99%, Not charging,
+before the probe and 100%, Full, afterwards.
+
+The [exact probe](panel-layout-2026-10-24/probe.py) loads only
+`FnTable:IVROverlay_028` from the shipped
+`/opt/steamvr/bin/linuxarm64/libopenvr_api.so`. It uses application type 3
+(`VRApplication_Background`, avoiding runtime startup) and shuts down its own
+OpenVR connection in `finally`. Initialization and interface acquisition both
+returned 0. It calls getters only, with no image capture or input injection.
+
+[Raw result](panel-layout-2026-10-24/readback.json):
+
+| Getter | `valve.steam.desktopgame.0` | `valve.steam.gamepadui.main` |
+|---|---|---|
+| FindOverlay | 0, Success | 0, Success |
+| Rendering process | `gamescope-wl` | `gamescope-wl` |
+| Width | 0; 2.6700000763 m | 0; 2.6670000553 m |
+| Curvature | 0; 0 | 0; 0 |
+| Transform type | 0; 5, DashboardTab | 0; 5, DashboardTab |
+| Absolute transform | 18, WrongTransformType | 18, WrongTransformType |
+| Tracked-device-relative transform | 18, WrongTransformType | 18, WrongTransformType |
+| Coordinate transform, center, standing origin | 0; identity matrix | 0; scaled/translated matrix |
+| Coordinate transform, center, seated origin | 23, RequestFailed | 23, RequestFailed |
+| Coordinate transform, center, raw origin | 23, RequestFailed | 23, RequestFailed |
+
+The dashboard and both panels were reported hidden; neither panel was active.
+The standing-space matrix is the transform for the overlay point `(0.5, 0.5)`;
+it does not identify World/Dashboard/Theater/controller docking or recreate a
+dashboard frame. The Steam panel's basis has scale about 0.369. Treat neither
+that scaled matrix nor the hidden Gamescope panel's identity as a validated
+physical placement to feed to an absolute-transform setter. Visible placement,
+matrix freshness and correspondence to dashboard size were not checked by a
+wearer.
+
+## API and dashboard boundary
+
+The ABI and result names were checked against Valve's
+[OpenVR v2.12.14 C header](https://github.com/ValveSoftware/openvr/blob/v2.12.14/headers/openvr_capi.h)
+and [C++ interface comments](https://github.com/ValveSoftware/openvr/blob/v2.12.14/headers/openvr.h).
+That header declares `IVROverlay_028`; its SHA-256 is
+`d58a2b149e434b2b8ee25cb4253ca6157feed8092f621e78ecfed6846d35d3e4`.
+The absolute getter is explicitly limited to absolute transforms. The
+coordinate getter returns the 3D transform for a 2D overlay point. Public
+`IVROverlay_028` has no getter/setter pair for dashboard dock location or frame
+scene-graph state. The probe fails closed if that exact interface is absent.
+
+Read-only inspection of the shipped dashboard
+`/opt/steamvr/resources/webinterface/dashboard/chunk~8012d0c89.js`
+(SHA-256 `937ec62c67a481f030a416099ceb98b0fe2a702aea5a0705601c6c40d4969f6d`)
+found:
+
+- `dockLocation` reads an internal `_getDockLocation(frameID)` store;
+  `SetDockLocation` updates that store or sends a VRLink request.
+- `m_mapLastRelativeTransformForDockLocation` keeps per-location transforms.
+  World initialization requests a dashboard scene-graph transform through
+  `requestSGTransform`, then updates the component's `xfTransform`.
+- The `vrcmd_dock_overlay` handler accepts `dashboard`, `lefthand`, `righthand`,
+  `theater` and `world`. It selects the frame associated with the supplied key,
+  **falls back to the active frame if no match exists**, sets dock location and
+  may switch frame. This is not an exact pose restore or a readback response.
+
+Those are observations of shipped internal code, not proof that Frame Control
+can safely access its state through a supported external API. No dashboard
+JavaScript was injected, private store edited or VRLink command sent. The
+active-frame fallback is an additional reason not to experiment with docking
+commands on a stale key.
+
+The [2026-09-28 probe](../panels.md#saved-spatial-layouts-blocked-on-the-current-panel-route)
+on SteamOS 0.4.1 / SteamVR 2.18.1 recorded an absolute setter returning
+12 (`PermissionDenied`) on a temporary, test-owned gamescope panel. That setter
+result is **historical**, not a new test on 2.18.2. The newer read-only results
+above neither overturn nor reverify it.
+
+## Commands, safety and cleanup
+
+Read-only inspection used `ssh frame` with `BatchMode=yes` and
+`ConnectTimeout=10`, `cat /etc/os-release`, battery sysfs reads,
+`systemctl --user is-active gamescope-session.service plasma-workspace.target`,
+process inspection, and `vrcmd --version`, `--help`, `--overlays`. An initial
+`--listoverlays` attempt returned `Unknown command`; `--overlays` is the actual
+enumeration command. Dashboard sources were read/copied to local `/tmp` for
+inspection. No files were installed on the Frame.
+
+Run the retained probe from the repository root, following
+[the shared-device rules](../testing.md#headset-smoke-test). Stop if the lock is
+occupied or battery is at/below 20%; never remove another task's lock:
+
+```sh
+ssh -o BatchMode=yes -o ConnectTimeout=10 frame \
+  'set -eu; mkdir /tmp/frame-test.lock || exit 3; trap "rmdir /tmp/frame-test.lock" EXIT; timeout 25 python3 -' \
+  < docs/evidence/panel-layout-2026-10-24/probe.py
+```
+
+This command acquired the lock, completed with exit 0 and released it. A
+subsequent check confirmed the lock absent, Game Mode active, and Steam,
+`vrserver` and `vrcompositor` running. The probe's only headset filesystem
+change was creating/removing that shared lock. Its Python source ran from
+stdin. There were no test panels, installs, profiles or services to remove.
+
+No mutation test was essential: without verified dock/relative-frame readback,
+there was no exact original layout and bounded rollback to justify changing a
+panel. Existing user panels were never focused, shown, hidden, resized, moved
+or docked. No global settings, security, passwords, runtime processes or modes
+were changed; no reboot or reset occurred.
+
+## Validation and remaining gaps
+
+Existing `tests/test_panels.py` covers main-panel enumeration, hidden panels,
+focus revalidation, unavailable-runtime errors and HTTP authentication/Host/
+Origin guards. `tests/test_page_scripts.py` checks the production page's shared
+JavaScript scope. These offline checks do not prove spatial placement. The
+retained probe is evidence tooling, not a new product API; no fake layout
+backend or layout tests claiming device support were added.
+
+Validation passed:
+
+```sh
+python3 -m unittest discover -s tests -p test_panels.py -v       # 8 passed
+python3 -m unittest discover -s tests -p test_page_scripts.py -v # 5 passed
+python3 -m py_compile docs/evidence/panel-layout-2026-10-24/probe.py
+python3 -m json.tool docs/evidence/panel-layout-2026-10-24/readback.json
+git diff --check
+```
+
+The initial panel-suite attempt hit sandbox socket restrictions in four HTTP
+tests; rerunning with loopback sockets permitted passed all eight. No real
+headset connection is used by those tests. The full suite and fake Frame were
+not run for this evidence-only change.
+
+Before shipping layouts, a native route still needs proof of dock state and
+relative-frame readback, authorized restore on an owned test panel with exact
+rollback, and correspondence between saved size/pose and visible placement.
+It also needs stable source identity and a fresh capture-permission/ticket
+flow when reopening viewers. Reconnect, panel recreation, reboot recovery,
+Steam-launched gameplay, controller docking and worn-headset input were not
+tested here. The existing Frame Control-owned media renderer is not proof that
+Steam/gamescope panels can be restored. No third-party overlay app was used.
+
+## Announcement
+
+We rechecked saved panel layouts on SteamOS 0.5.6. SteamVR exposes some panel
+geometry, but we have not verified safe restoration of Steam's panel positions
+and docking. Saved layouts remain unavailable; use SteamVR's dashboard to
+arrange panels. The panel switcher continues to list and show open panels.

docs/evidence/panel-layout-2026-10-24/probe.py

@@ -0,0 +1,89 @@
+"""Read-only issue #31 probe; pipe to `ssh frame 'timeout 25 python3 -'`.
+
+Acquire /tmp/frame-test.lock first per docs/testing.md. No overlay is created,
+focused, docked or changed. Background init (3) does not start SteamVR.
+ABI: ValveSoftware/openvr v2.12.14 headers/openvr_capi.h, IVROverlay_028.
+"""
+import ctypes as C
+import json
+from pathlib import Path
+
+H = C.c_uint64
+Matrix = C.c_float * 12
+
+
+class Vector2(C.Structure):
+    _fields_ = [('v', C.c_float * 2)]
+
+
+def probe():
+    vr = C.CDLL('/opt/steamvr/bin/linuxarm64/libopenvr_api.so')
+    vr.VR_InitInternal2.argtypes = [C.POINTER(C.c_int), C.c_int, C.c_char_p]
+    vr.VR_InitInternal2.restype = C.c_uint32
+    vr.VR_GetGenericInterface.argtypes = [C.c_char_p, C.POINTER(C.c_int)]
+    vr.VR_GetGenericInterface.restype = C.c_void_p
+    vr.VR_ShutdownInternal.argtypes = []
+    vr.VR_ShutdownInternal.restype = None
+    err = C.c_int()
+    vr.VR_InitInternal2(C.byref(err), 3, None)
+    report = {'init_error': err.value, 'interface': 'IVROverlay_028', 'panels': []}
+    if err.value:
+        return report
+    try:
+        ptr = vr.VR_GetGenericInterface(b'FnTable:IVROverlay_028', C.byref(err))
+        report['interface_error'] = err.value
+        if err.value or not ptr:
+            return report
+        table = C.cast(ptr, C.POINTER(C.c_void_p))
+
+        def function(slot, result, *args):
+            return C.CFUNCTYPE(result, *args)(table[slot])
+
+        def read(slot, handle, output_type):
+            output = output_type()
+            rc = function(slot, C.c_int, H, C.POINTER(output_type))(handle, C.byref(output))
+            return {'rc': rc, 'value': output.value if rc == 0 else None}
+
+        report['dashboard_visible'] = function(68, C.c_bool)()
+        for key in ('valve.steam.desktopgame.0', 'valve.steam.gamepadui.main'):
+            row = {'key': key}
+            report['panels'].append(row)
+            handle = H()
+            row['find_rc'] = function(0, C.c_int, C.c_char_p, C.POINTER(H))(
+                key.encode(), C.byref(handle))
+            if row['find_rc']:
+                continue
+            pid = function(10, C.c_uint32, H)(handle)
+            row['rendering_pid'] = pid
+            try:
+                row['rendering_comm'] = Path('/proc/%d/comm' % pid).read_text().strip()
+            except OSError:
+                row['rendering_comm'] = None
+            row['visible'] = function(45, C.c_bool, H)(handle)
+            row['active_dashboard'] = function(69, C.c_bool, H)(handle)
+            row['width_m'] = read(23, handle, C.c_float)
+            row['curvature'] = read(25, handle, C.c_float)
+            row['transform_type'] = read(32, handle, C.c_int)
+            for name, slot, scalar in (('absolute', 34, C.c_int),
+                                       ('tracked_device_relative', 36, C.c_uint32)):
+                origin = scalar()
+                matrix = Matrix()
+                rc = function(slot, C.c_int, H, C.POINTER(scalar), C.POINTER(Matrix))(
+                    handle, C.byref(origin), C.byref(matrix))
+                row[name] = {'rc': rc, 'origin_or_device': origin.value if rc == 0 else None,
+                             'matrix': list(matrix) if rc == 0 else None}
+            row['coordinate_transforms'] = []
+            for origin in (0, 1, 2):  # seated, standing, raw/uncalibrated
+                matrix = Matrix()
+                rc = function(46, C.c_int, H, C.c_int, Vector2, C.POINTER(Matrix))(
+                    handle, origin, Vector2((.5, .5)), C.byref(matrix))
+                row['coordinate_transforms'].append({
+                    'tracking_origin': origin, 'coordinates': [.5, .5], 'rc': rc,
+                    'matrix': list(matrix) if rc == 0 else None})
+        return report
+    finally:
+        vr.VR_ShutdownInternal()
+
+
+if __name__ == '__main__':
+    print(json.dumps(probe(), indent=2, allow_nan=False))

docs/evidence/panel-layout-2026-10-24/readback.json

@@ -0,0 +1,152 @@
+{
+  "init_error": 0,
+  "interface": "IVROverlay_028",
+  "panels": [
+    {
+      "key": "valve.steam.desktopgame.0",
+      "find_rc": 0,
+      "rendering_pid": 297037,
+      "rendering_comm": "gamescope-wl",
+      "visible": false,
+      "active_dashboard": false,
+      "width_m": {
+        "rc": 0,
+        "value": 2.6700000762939453
+      },
+      "curvature": {
+        "rc": 0,
+        "value": 0.0
+      },
+      "transform_type": {
+        "rc": 0,
+        "value": 5
+      },
+      "absolute": {
+        "rc": 18,
+        "origin_or_device": null,
+        "matrix": null
+      },
+      "tracked_device_relative": {
+        "rc": 18,
+        "origin_or_device": null,
+        "matrix": null
+      },
+      "coordinate_transforms": [
+        {
+          "tracking_origin": 0,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 23,
+          "matrix": null
+        },
+        {
+          "tracking_origin": 1,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 0,
+          "matrix": [
+            1.0,
+            0.0,
+            0.0,
+            0.0,
+            0.0,
+            1.0,
+            0.0,
+            0.0,
+            0.0,
+            0.0,
+            1.0,
+            0.0
+          ]
+        },
+        {
+          "tracking_origin": 2,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 23,
+          "matrix": null
+        }
+      ]
+    },
+    {
+      "key": "valve.steam.gamepadui.main",
+      "find_rc": 0,
+      "rendering_pid": 297037,
+      "rendering_comm": "gamescope-wl",
+      "visible": false,
+      "active_dashboard": false,
+      "width_m": {
+        "rc": 0,
+        "value": 2.6670000553131104
+      },
+      "curvature": {
+        "rc": 0,
+        "value": 0.0
+      },
+      "transform_type": {
+        "rc": 0,
+        "value": 5
+      },
+      "absolute": {
+        "rc": 18,
+        "origin_or_device": null,
+        "matrix": null
+      },
+      "tracked_device_relative": {
+        "rc": 18,
+        "origin_or_device": null,
+        "matrix": null
+      },
+      "coordinate_transforms": [
+        {
+          "tracking_origin": 0,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 23,
+          "matrix": null
+        },
+        {
+          "tracking_origin": 1,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 0,
+          "matrix": [
+            0.3689989447593689,
+            0.0,
+            0.0008894503116607666,
+            -0.5048462152481079,
+            0.0,
+            0.36899998784065247,
+            0.0,
+            1.2510287761688232,
+            -0.0008894503116607666,
+            0.0,
+            0.3689989447593689,
+            -1.1726053953170776
+          ]
+        },
+        {
+          "tracking_origin": 2,
+          "coordinates": [
+            0.5,
+            0.5
+          ],
+          "rc": 23,
+          "matrix": null
+        }
+      ]
+    }
+  ],
+  "interface_error": 0,
+  "dashboard_visible": false
+}

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."
+  ]
+}