test: [vent] Dispatching several test items (#475/#476/#478/#479) in quick succession… - #641
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… item's uncommitted work Dispatching several items in quick succession caused worktree-creation retries, after which two unrelated items' dirty worktrees (#110, #473) vanished from disk -- with no reclaim/force involved. Reproduced the full chain; three defects on it, all fixed here. 1. create_worktree ran a repo-wide `git worktree prune` to clear its own branch's stale registration. Prune drops the admin entry of ANY registration whose gitdir file points at a missing path -- including a worktree that is fully intact on disk with uncommitted work in it (verified directly against git 2.54). The victim is left with a dangling .git pointer. Replaced with remove_stale_registration_for(), which only touches entries that name this branch AND whose checkout is actually gone, failing closed on an unreadable gitdir file. 2. audit_orphans then reads that dangling pointer as a broken-gitdir orphan, and gc_orphans deletes it -- the one path that never dirty-checks, because `git status` cannot run without a working gitdir. `git worktree repair` cannot recover it either once the admin entry is gone. 3. Both gc_orphans and doctor::reclaim_scoped snapshotted "before deletion" via snapshot_before(repo_root), which stages from the main checkout -- where ensure_worktrees_ignored puts .worktrees/ in .git/info/exclude. The safety net captured an empty tree and the work was simply gone. Added snapshot_worktree_before(), which stages the worktree itself against the main repo's object store via an explicit --git-dir, so it works even when the worktree's own .git is broken. Regression tests cover all three; each was confirmed to fail against the previous code with the expected diagnostic (the snapshot test's ls-tree came back empty). Agentflare-Agent: claude-code Agentflare-Branch: task/483-vent-dispatching-several-test-items-475 Agentflare-Item: 483 Agentflare-Session: 5cd6e9a4-5841-472c-966e-4604d759109b
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📝 WalkthroughWalkthroughThe change adds worktree-specific snapshot support, scopes stale registration cleanup to the requested branch, and updates reclaim and orphan cleanup flows. Regression tests verify preservation of live worktrees and capture of uncommitted orphan contents. ChangesWorktree safety
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to Concurrent snapshot operations can interfere with one another and preserve the wrong worktree contents, leaving user changes incorrectly backed up or still vulnerable to loss. The temporary-index handling should be made unique per call or serialized before merge. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Title checkExplanation The title refers to dispatching several test items, which is the context for the reported issue. It does not identify the primary fix for cross-item worktree data loss, but it remains related to the changeset. Full details: Description checkExplanation The description provides a detailed summary of the defects, implemented fixes, regression tests, validation results, and known risks. It does not follow the template headings exactly and does not explicitly address backwards compatibility, but the required information is mostly present. ✨ Finishing Touches📝 Generate docstrings
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In `@crates/flare-git-core/src/snapshot.rs`:
- Around line 119-122: Make snapshot_worktree_before use a per-call unique
temporary index, or serialize the full git add/write-tree sequence, so
concurrent snapshots cannot share GIT_INDEX_FILE; add a parallel regression test
using distinct sentinel files to verify each snapshot captures its own worktree.
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crates/flare-git-core/src/doctor.rscrates/flare-git-core/src/snapshot.rscrates/flare-git-core/src/worktree.rscrates/flare-git-core/src/worktree_tests.rs
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… just per process CodeRabbit flagged that snapshot_worktree_before's GIT_INDEX_FILE was keyed only on std::process::id(), so two threads in the same process snapshotting different worktrees at once could share a staging area and corrupt each other's snapshot. Mixed in a process-local atomic counter. Reproduced the corruption against the old code (reliably failing across 5 runs), confirmed the fix eliminates it, and applied the same key to snapshot_before for consistency even though it currently has no concurrent caller. Agentflare-Agent: claude-code Agentflare-Branch: task/483-vent-dispatching-several-test-items-475 Agentflare-Item: 483 Agentflare-Session: 73287c37-1353-400c-a30e-2047d9328d4e
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task/483-vent-dispatching-several-test-items-475(not pushed).What I did
I reproduced the reported cross-item data loss end to end against real git rather than reasoning from the vent text, and found three defects on a single causal chain — the vent's hypothesis ("retry logic destroys another item's worktree") was correct, but the mechanism was not what the existing memory recorded.
create_worktreeran a repo-widegit worktree pruneto clear its own branch's stale registration. I verified directly (git 2.54) that prune deletes the admin entry of any registration whosegitdirfile points at a missing path — including a worktree fully intact on disk with uncommitted work in it. That is the cross-item coupling: item A's retry, item B's dangling.git. Replaced withremove_stale_registration_for(), scoped to entries that name this branch and whose checkout is genuinely gone, failing closed on an unreadable file.audit_orphansnever dirty-checks the broken-gitdir path — it can't, sincegit statusneeds a working gitdir — sogc_orphansdeletes those with no guard and no force flag. I also confirmedgit worktree repaircannot recover such a worktree once the admin entry is gone.The "snapshot before deletion" safety net captured nothing. Both
gc_orphansanddoctor::reclaim_scopedcalledsnapshot_before(repo_root), which stages from the main checkout — whereensure_worktrees_ignoredputs.worktrees/in.git/info/exclude. Addedsnapshot_worktree_before(), staging the worktree itself against the main repo's object store via an explicit--git-dirso it works even with a broken.git.This also explains the memory note that PR #515 "regressed the same day": #515 correctly scoped
doctor, but defects 1–3 are a different code path that #515 never touched, sotask/479could still be wiped without anyone callingdoctor.Tests
cargo test -p flare-git-core— 210 passed, 0 failed; workspace builds; clippy clean with the required-A unsafe_code -A clippy::pedantic;cargo fmt --checkclean.Three new regression tests. I verified each fails against the previous code with the right diagnostic — notably the snapshot test's
ls-treecame back literally empty, confirming defect 3 was destroying work with an empty safety net.Concerns
src/mcp_server/tests/item_doctor_tests.rsfails intermittently (~5%) in setup —git worktree addsilently doesn't create the directory. Unmodified HEAD failed on the first iteration of the same 20-run protocol. Root cause looks like these tests using bareCommand::new("git"), which can resolve to the freshly-builtflare-git-shimgit.exesitting on cargo's target dir in PATH — and the shim always-deniesworktree.shell.rsdocuments exactly this hazard andgit_binary()exists to avoid it; those tests bypass it. Worth its own item.gc_orphans, since a genuinely broken-gitdir worktree's dirtiness is unknowable and gating it would break the legitimate cleanup path. If you'd prefer preserve-by-default there, that's a small follow-up.Opened by
claude-codeon flared:c997d745ae66 for item #483 via agentflare.Summary by CodeRabbit
Bug Fixes
Tests