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feat(FN-5084): merge fusion/fn-5084

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gsxdsm
2026-05-18 17:53:00 -07:00
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commit f46629ef10
5 changed files with 148 additions and 32 deletions
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docs/task-management.md
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@@ -40,6 +40,12 @@ Dashboard `POST /tasks` now performs a pre-create duplicate gate using token-ove
This deterministic layer complements (does not replace) the FN-4829 similarity warning gate. `bypassDuplicateCheck: true` on `POST /tasks` disables both gates. FN-4892 remains a separate engine-side same-agent intake heuristic at triage finalize.
##### Fail-open boundary (FN-5084)
The deterministic **pre-check** now fails open: transient store query failures, in-process mutex bookkeeping failures, and leader-lock promise rejections do not block task creation. The route logs one `runtimeLogger.warn` line tagged `FN-5084` (including `projectId` and `contentFingerprint`) and continues through the FN-4829 similarity gate to normal create handling.
Only legitimate deterministic duplicate detections continue to propagate as `409` via `ApiError` from `conflict("duplicate_candidates", ...)`. The post-create FN-4918 reconciliation pass remains the second line of defense.
### Intake auto-archive (ghost-bug preflight + same-agent duplicate)
Fusion applies two conservative intake heuristics that may auto-archive newly filed tasks before execution starts: