docs: record v0.4.42 tagged release verification

docs/evidence/v0442-release-2026-10-26.md

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+# v0.4.42 tagged release, 26 October 2026
+
+The annotated `v0.4.42` tag dereferences to main merge commit
+`98909cb54374a7bd7ec1f665f50eda20fa196f32` from PR #302. The app and
+lockfile both report 0.4.42. The [tagged release workflow](https://github.com/saphid/frame-control/actions/runs/40276685171)
+passed its draft, Linux, Windows, Apple Silicon Mac, Intel Mac and checksum jobs.
+The Linux job launched its built AppImage under isolated Xvfb. CI does not prove
+a physical Windows or Mac launch.
+
+## Real Frame, exact tag
+
+From an exact tag checkout, `scripts/frame-smoke.sh` acquired its own unique
+owner in `/tmp/frame-test.lock` before reading the headset. Preflight found
+SteamVR activity 3 (standby), proximity 6.25 and battery 100%. On Frame OS 0.5.6
+build `20261022.6153909`, it recorded **12 passed / 1 skipped / 0 failed** and
+exited 0. ARM64 and Proton test executables launched. The x86_64 title was
+installed and removed, but its launch was skipped because optional Steam Linux
+Runtime 4 was absent. Test title/process cleanup passed and only the run's lock
+was released. The private result is
+`tests/smoke/results/2026-10-26T055940Z-20261022.6153909.json` in the exact tag
+checkout.
+
+The separate [unworn Framey candidate exercise](v0442-candidate-2026-10-26.md)
+passed real sample setting save/reopen, synthetic OpenVR pointer delivery and
+stereo compositor change, with power restored and cleanup complete. It was run
+on the release branch's code before the evidence-only final commit. No person
+wore the Frame. Neither run verifies official plugin VR panels, physical
+controller usability, native scrolling, VR keyboard or optical comfort. The
+hourly worn check remains enabled.
+
+## Installer, checksum and updater checks
+
+The draft held ten installers plus `SHA256SUMS`, each with a GitHub SHA-256
+digest. `scripts/publish-release.sh --dry-run v0.4.42` checked the exact remote
+tag and every installer digest, regenerated the checksum list from those
+metadata digests, and matched the uploaded `SHA256SUMS` digest. A fresh
+checksum-list download independently matched
+`e5c85f5a46d789dccafae5259bd00b9b048dd10ca4f2a6cdc52d1f432a6db989`.
+
+A fresh Linux x86_64 AppImage download matched
+`16fc9fbe448bccbe59aa4206bc171c6bfc741973d2b4da0a79652a5c11d837b3`.
+`scripts/check-appimage-launch.py` launched those exact bytes under isolated
+Xvfb: the bundled server answered HTTP 200 with `FrameControl/1` and then
+stopped. Fresh Mac ZIP downloads matched GitHub digests: arm64
+`394d6088e732a19289b7b92366dd247f14f7293a345d57ed5c4e9c83a50abad3`
+and x64 `66d4606e38210d02af59dc87e4d1216282ad9e968056d7096f247fcc51e72395`.
+Both bundles report version 0.4.42; their main Mach-O CPU types are arm64 and
+x86_64 respectively. Neither tagged Mac ZIP was launched on a physical Mac.
+
+`scripts/publish-release.sh v0.4.42` published
+[v0.4.42](https://github.com/saphid/frame-control/releases/tag/v0.4.42) at
+2026-10-26 06:02:20 UTC. GitHub's latest-release API read back `draft=false`,
+`prerelease=false`, the expected tag, ten installers, `SHA256SUMS` and
+`update.json`. A fresh public latest-download of `update.json` parsed as
+version 0.4.42 with the stable release page and ten SHA-256 installer digests.
+The tag contains #299, #300, #301 and #303 through #302's release merge.
+#304 merged after the tag and is not in this release.
+
+The exact-version official Decky table for v0.4.42 is **3 works / 48 partial /
+54 broken / 11 N/A**. The two additional works labels are restricted to tested
+per-app silent-stream volume control. Audible playback and official-plugin
+worn VR remain unverified.