fusion

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gsxdsm ec1d29e818 FN-6922: guard worktree acquisition returns from repo root

Prevent task worktree acquisition from handing the project root back to executors.

- Add a repo-root return guard across resume, pool, and fresh acquisition paths.
- Clear invalid repo-root task assignments and create a fresh worktree fallback when safe.
- Share repo-root canonicalization and expand regression coverage for acquisition liveness.
- Document the acquisition guard and add a patch changeset.

Files changed:
 .changeset/fn-6922-repo-root-acquisition-guard.md  |   5 +
 .../repo-root-task-worktree-requeue-loop.md        |   9 +-
 .../__tests__/executor-worktree-liveness.test.ts   |  35 +++
 .../worktree-acquisition-secrets-env.test.ts       |   9 +-
 .../src/__tests__/worktree-acquisition.test.ts     |  91 ++++++-
 packages/engine/src/worktree-acquisition.ts        | 272 +++++++++++++--------
 packages/engine/src/worktree-pool.ts               |   8 +-
 7 files changed, 304 insertions(+), 125 deletions(-)

Fusion-Task-Id: FN-6922

Fusion-Task-Lineage: c16cee1b-de16-4d5f-90e0-132f94fa8377

2026-06-22 19:11:08 -07:00

architecture-patterns

Merge pull request #1682 from Runfusion/feature/acp-route-a-followups

2026-06-17 06:12:06 +08:00

best-practices

Update docs/solutions/best-practices/merge-conflict-extraction-vs-semantics-and-parallel-bootstrap.md

2026-06-03 15:26:49 -07:00

build-errors

docs(solutions): capture eslint exhaustive-deps CI-lint gotcha

2026-06-21 03:10:21 -07:00

database-issues

docs(solutions): capture schema-version migration-gate learning