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feat(FN-5223): anchor staleness and stall detectors to engine activation ti

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The merge introduces an engine-activation timestamp as the staleness floor for task age calculations, replacing arbitrary wall-clock thresholds with a runtime-relative anchor. Step 1 adds settings defaults, Steps 2–4 wire the floor helper through project engine, in-process runtime, and task store hy

Fusion-Task-Id: FN-5223
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Fusion (runfusion.ai)
2026-05-20 14:02:16 -07:00
committed by gsxdsm
parent 62f11e69d3
commit c60045df22
25 changed files with 626 additions and 13 deletions
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docs/settings-reference.md
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@@ -320,6 +320,8 @@ Default notes:
| `specStalenessEnabled` | `boolean` | `false` | Enforce automatic re-planning for stale plans. |
| `specStalenessMaxAgeMs` | `number` | `21600000` | Spec staleness threshold in ms (6 hours). |
| `taskStuckTimeoutMs` | `number` | `undefined` | Inactivity timeout for stuck-task recovery. |
| `engineActiveSinceMs` | `number` | `undefined` | Epoch ms when the in-process runtime last became active (startup or unpause). Time-based stuck/stalled/stale surfaces floor their activity anchor at this timestamp so paused/stopped downtime is not counted as quiet age. Runtime-managed; typically not set manually. |
| `engineActivationGraceMs` | `number` | `300000` | Extra grace window (ms) added after `engineActiveSinceMs` before time-based stuck/stalled/stale surfaces can fire. Set `0` to disable warmup. |
| `inReviewStallDeadlockThreshold` | `number` | `3` | Minimum number of identical consecutive in-review stall log entries (same stall code + reason) before self-healing auto-disposes the task by pausing it with `pausedReason="in-review-stall-deadlock"` and marking status `failed`. Set to `0` to disable. |
| `stalePausedReviewThresholdMs` | `number` | `86400000` | Threshold in ms for surfacing paused `in-review` tasks as stale paused review diagnostics (24 hours). `0` or `undefined` disables stale paused review surfacing/logging. |
| `inReviewStalledThresholdMs` | `number` | `86400000` | When `> 0`, enables surfacing of unpaused `in-review` tasks quiet beyond threshold via the `surface-in-review-stalled` self-healing pass; `0` disables. See **Backlog health alerts** below. |