fusion

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gsxdsm af6e671e72 FN-7385: preserve live worktrees with fresh fallback

Preserve active worktree owners by retrying acquisition on a fresh sibling checkout.

- Add executor fallback that detects active cleanup refusals and creates bounded sibling branches in fresh generated worktrees.\n- Cover DB-only, same-task workflow-step, existing-branch, and exhausted-suffix conflict paths with regression tests.\n- Document the live worktree conflict fallback and add a patch changeset for the published CLI package.\n\nFiles changed:\n .../fn-7385-active-worktree-fresh-fallback.md      |   7 +\n docs/architecture.md                               |   1 +\n .../__tests__/executor-worktree-conflict.test.ts   | 103 +++++++++++++-\n .../engine/src/__tests__/executor-worktree.test.ts | 153 ++++++++++++++++++---\n packages/engine/src/executor.ts                    |  90 ++++++++----\n 5 files changed, 312 insertions(+), 42 deletions(-)

Fusion-Task-Id: FN-7385

Fusion-Task-Lineage: 02c31656-1248-49c0-9063-0750cc8e41c6

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

2026-07-01 10:55:57 -07:00