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feat(FN-5321): add evidence gap detector for external integration manifests

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Implements external integration validation (FN-5321) with a manifest validator scaffold, worktrunk manifest wiring, and an evidence gap detector that runs during spec validation and triage; the reviewer also gates on external integration readiness. Includes tests for manifest, evidence gap, and tria

Fusion-Task-Id: FN-5321
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Fusion (runfusion.ai)
2026-05-20 15:53:54 -07:00
committed by gsxdsm
parent cce877b5f6
commit b06cf64cd4
15 changed files with 708 additions and 30 deletions
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docs/architecture.md
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@@ -703,6 +703,7 @@ Guardrails: this routine does **not** retry merges, does **not** apply to mixed/
- Worktrunk-aware fallback implementations where worktrunk lacks a dedicated primitive: `sync` uses git fetch+rebase semantics, and `prune` uses `git worktree list --porcelain` plus per-branch `remove` calls.
- Layout precedence: when `worktrunk.enabled=true`, `resolveTaskWorktreePathForBackend(...)` defers to backend `resolveWorktreePath(...)` (using `wt config show --format json` template data with default `{{ repo_path }}/.worktrees/{{ branch | sanitize }}` fallback); otherwise it remains byte-identical to FN-4606 `resolveTaskWorktreePath(...)` behavior.
- Auto-install remains fail-closed while the pinned release manifest is `upstream-pending-verification`: the pre-approved install path now rejects missing asset URLs/checksums instead of fabricating a local binary. This preserves the FN-4704/FN-4705 disabled-install contract until a human verifies a real upstream release manifest.
- FN-5321 generalized this contract into `packages/engine/src/external-integrations/manifest.ts` (`validateExternalIntegrationManifest`) plus `KNOWN_EXTERNAL_INTEGRATIONS`; `packages/engine/src/__tests__/external-integrations-registry.test.ts` enforces that every registered integration manifest validates, avoids duplicate-segment GitHub hallucinations, and carries canonical binary/upstream metadata.
- `worktrunk.onFailure` controls fail-hard vs fallback-native create behavior and emits `worktree:worktrunk-*` run-audit events for create/fallback paths.
- `WorktreeNames` (`worktree-names.ts`) — deterministic worktree/branch naming