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fix(webcam): offer the Web Cam row only when a camera is attainable (live lock), not merely selected

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Creator refinement: 'offered iff there's not one already configured & attainable'.
CanAddWebcam now requires IsWebcamAttainable = identity present AND a RUNNING
session (CameraManager.IsRunning) — an identity whose camera was unplugged or
whose lock keeps failing leaves the row greyed with reason 'No webcam is
currently available…', and it un-greys the moment a session is live. Gate
re-raised at every attainability flip: staging, removal, startup lock success,
first frame, camera failure, identity swap.

Root cause the old test surfaced: the startup pass skipped acquiring when the
loaded identity's configs already held the session, so there was no independent
app base ref — removing the last placement dropped RefCount to 0 and killed the
session. The single-camera branch now ALWAYS acquires (a running session just
bumps), laying the app-wide base hold so the default outlives the scenes.

Good Dog: WebcamMenuGateTests second fact — identity loaded, session can't start
→ row NOT offered + 'No webcam is currently available…' tooltip. Positive fact
waits for WebcamStartupValidationTask to make the IsRunning read deterministic.
Docs same commit (ai.md gate + base-lock, TASKS.md, HANDOFF.md incl. proven
pre-existing audio flake). 305 tests (304 pass + known flake), 0 warnings.
This commit is contained in:
Llama Chile Shop
2026-09-17 09:16:56 -07:00
parent 9d00955004
commit 75723acc1b
5 changed files with 135 additions and 75 deletions
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TASKS.md
+5 -4
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@@ -68,10 +68,11 @@
- **Webcam resource lifecycle (2026-09-17)** — startup slice shipped (OS poll at start, single-camera
auto-lock, persistent red alert in the Layers panel on lock failure, re-polls until resolved); gate
slice shipped same day — webcam = app-level default, one per stream per scene, Add places the
default directly, identity survives last-placement removal, startup adopts a solo camera as default.
TASK 26's app-wide gate superseded by creator directive. Next slices (user-queued): multi-camera
webcam selector in the App Settings dialog (gear), static (+) catalog rows (Background,
YouTubeEvent, quoted labels) with reason-greying.
default directly, offered only when a camera is ATTAINABLE (identity + live session, not just a
saved identity), app base lock keeps the session after the last placement is removed, startup
adopts a solo camera as default. TASK 26's app-wide gate superseded by creator directive. Next
slices (user-queued): multi-camera webcam selector in the App Settings dialog (gear), static (+)
catalog rows (Background, YouTubeEvent, quoted labels) with reason-greying.
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