feat(FN-3882): document clearStaleBlockedBy() in SelfHealingManager section

Added a single line documenting `clearStaleBlockedBy()` in the SelfHealingManager section of the architecture docs.

Fusion-Task-Id: FN-3882

.changeset/FN-3862-merge-attribution.md

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+---
+"@runfusion/fusion": patch
+---
+
+Stop overwriting canonical merge commit SHAs on already-done tasks during self-healing reconciliation. Confirmed `mergeDetails.commitSha` is now preserved as authoritative; rediscovery for unconfirmed done tasks prefers the earliest owned commit so the original merge commit wins over later follow-up commits sharing the same `Fusion-Task-Id` trailer.

.changeset/FN-3868-github-tracking-settings.md

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+---
+"@runfusion/fusion": patch
+---
+
+Add global and project settings for GitHub issue tracking: global default tracking repo, project-level default tracking repo, per-project tracking toggle for new tasks, GitHub auth mode (`gh-cli` | `token`), and optional stored personal access token. This is foundational settings work for FN-3868 → FN-3876; behavior wiring ships in downstream subtasks.

.changeset/FN-3877-triage-spec-compaction.md

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+---
+"@runfusion/fusion": patch
+---
+
+Triage: progressively compact large optional sections (subtask guidance, attachments, existing spec, user comments) of the spec prompt when the model's context window overflows, in addition to the existing project-memory compaction. Fixes failures on small-context models such as local vLLM Qwen3-30B (issue Runfusion/Fusion#62, FN-3877).

.changeset/FN-3879-checkout-columns-self-heal.md

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+---
+"@runfusion/fusion": patch
+---
+
+Add a compatibility self-heal for legacy task databases that report `schemaVersion >= 20` but are missing checkout lease columns (`checkedOutBy`, `checkedOutAt`, `checkoutNodeId`, `checkoutRunId`, `checkoutLeaseRenewedAt`, `checkoutLeaseEpoch`).
+
+On initialization, missing lease columns are now added idempotently before version-guarded migrations, matching the earlier `nodeId` mitigation pattern and preventing `no such column: checkoutNodeId` crashes in task listing paths.

.changeset/fn-3783-reports-review-panel.md

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+---
+"@runfusion/fusion": patch
+---
+
+Add a multi-agent report review panel flow to the bundled reports plugin, including parallel reviewer orchestration, structured feedback parsing with retry, deterministic aggregation, and documented timeout/failure semantics.

.changeset/fn-3864-paused-scope-exclusion.md

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+---
+"@runfusion/fusion": patch
+---
+
+Scheduler: exclude paused in-review tasks from `activeScopes`. Paused failed-merge tasks no longer block dispatch of overlapping todo tasks via `blockedBy` re-stamping. (FN-3867)

.changeset/fn-3864-recover-already-merged-review.md

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+---
+"@runfusion/fusion": patch
+---
+
+Add `recoverAlreadyMergedReviewTasks()` self-healing sweep to recover phantom-merge-guard false positives. Detects tasks whose content already landed on the integration branch (via Fusion-Task-Id trailer, branch ancestry, or git patch-id walk) and reconciles them to `done` with proper merge metadata.

.changeset/fn-3878-restore-commitsha.md

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+---
+"@runfusion/fusion": patch
+---
+
+Restore canonical mergeDetails.commitSha for tasks FN-3794, FN-3814, FN-3829 whose attribution had been overwritten by self-healing reconciliation prior to the FN-3862 fix. Adds an idempotent restoration script (`scripts/restore-merge-sha-fn-3878.mjs`) for operators to re-verify or repair similar drift.

.changeset/fn-3879-chat-rooms-wired.md

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+---
+"@runfusion/fusion": patch
+---
+
+Wire chat rooms UI to backend. Creating a room now persists via /api/chat/rooms, the sidebar lists real rooms, room threads load history and stream new messages over chat:room:* SSE events, and the FN-3807 "Coming soon" placeholder is gone.