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feat(stream): retry a dropped push instead of ending the session (TASK 32·1)

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A dead encoder used to run the whole stop path, so a one-second blip ended the broadcast. Now a dropped
push is relaunched against the same ingest while the broadcast is still alive.

- `Services/StreamRetryPolicy.cs` — immediate, +1 s, +2 s, +3 s. Minimum waits on purpose (creator
  ruling): YouTube's grace is short, so every second not pushing is grace spent.
- `Services/StreamRecovery.cs` — the loop, with the audio pipe recreated before every attempt (its
  server is single-instance and unusable after the old client dies, so a naive relaunch fails on a
  missing input). After a push comes up it asks the API whether the broadcast survived: "complete"
  ends recovery as `BroadcastComplete` instead of showing a live sign over a dead stream; an API
  hiccup counts as recovered rather than ending a healthy session.
- `FramePump.EncoderFailed` — a dead push is recoverable; a compositor fault still goes through
  `Failed` and ends the session, because retrying it would loop.
- `MainViewModel.Recovery.cs` — wires the steps, reports each episode into the left panel alert stack
  (one row per episode, updated in place, log range painted), and cancels on Stop.
- Alert stack polish: a rule and a gap now separate the stack from the scene layers (they read as one
  list before), and the licence indicator uses the creator's wording — `STEAM ID NOT PRESENT` /
  `Steam ID Limit: 30fps` / `Click for More Info`, becoming `STEAM ID PRESENT` / `60fps` with a close
  control once owned.

Tests: `StreamRecoveryTests` (schedule, recover on attempt 2 with the pipe restarted each time,
complete-broadcast honesty, unknown liveness, give-up, cancel, audio-restart fault),
`FramePumpTests` now pin that process death raises `EncoderFailed` and not `Failed`.
FAST gate: 538 passed (one documented pre-existing audio failure), 0 warnings.
This commit is contained in:
gramps
2026-11-05 12:09:38 -08:00
parent a80108dd96
commit 72cb3ad55a
16 changed files with 583 additions and 35 deletions
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TASKS.md
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@@ -48,7 +48,7 @@ blocker; the smallest slice is 32·4 (fragmented MP4 on the record block).
| 55·2–3 | ☐ | Disk hygiene: delete `%TEMP%` alert clips on close + sweep at startup; low-disk guard before REC (slice 1 shipped) | [`task-55`](TASKS/task-55-disk-hygiene.md) |
| 40·A/C/D | ☐ | App Settings: active-camera picker; persist output resolution + surface transition defaults + confirm-before-End; accent consolidation | [`task-40`](TASKS/task-40-app-settings-round.md) |
| 3·20 | ☐ | RewardEvent persistence: canonical `RewardEvents` table + `superChatEvents.list` 30-day backfill (the session report and journey read it) | [`task-03`](TASKS/task-03-capture-pipeline.md) |
| 32 | 🔶 | Stream resilience: **fragmented MP4 done 2026-11-05**; remaining — blip retry → measured grace + amber "RECONNECTING" → one-click Back on air → ingest pre-flight | [`task-32`](TASKS/task-32-stream-resilience.md) |
| 32 | 🔶 | Stream resilience: **fragmented MP4 + blip retry done 2026-11-05**; remaining — measured grace + RECONNECTING countdown → one-click Back on air → ingest pre-flight | [`task-32`](TASKS/task-32-stream-resilience.md) |
| 33 | ☐ | Bandwidth auto step-down: pure policy over dropped-frame rate, one-way within a broadcast | [`task-33`](TASKS/task-33-bandwidth-step-down.md) |
| 34 | ☐ | Scheduled streams (Text-drawer version) | [`task-34`](TASKS/task-34-scheduled-streams.md) |
| 35 | ☐ | Scene-linked audio | [`task-35`](TASKS/task-35-scene-linked-audio.md) |