fix: canonicalize host worktree ownership - #3143
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This was referenced Jul 16, 2026
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What changed
/varand/private/varalias pattern.Why
The macOS Playwright task runtime could reject its own freshly allocated worker branch because Git and the invocation represented the same temporary worktree through different filesystem aliases.
Validation
tsc --noEmitvitest run tests/backend/infrastructure/providers/cli/workspace-artifact-service.test.ts— 21 passedvitest run tests/backend— 467 files, 6,148 passed, 12 skippednode scripts/build.mjsRisk and rollback
Low risk. The collision guard remains fail-closed and still requires the exact branch ref, tip, registered worktree, and ancestry. Rollback is the single commit in this PR.