Greptile Summary

This PR fixes watch-mode index contention by prepending --no-optional-locks to the git status invocation used to discover untracked files, preventing Git from refreshing the index under an optional lock during polling. buildGitStatusArgs is also exported so the new unit test can assert the exact argument list directly.

• src/core/git.ts: --no-optional-locks is inserted as the first element of the args array (before status), making it a global Git flag; the function is exported to enable direct testing.
• src/core/git.test.ts: A new unit test asserts the full argv produced by buildGitStatusArgs, verifying flag ordering and the presence of the new global flag.
• CHANGELOG.md: User-visible entry added under [Unreleased] → Fixed.

Confidence Score: 5/5

Safe to merge — the change is a one-line addition of a well-established Git global flag and an export modifier, with no behavioral risk to existing callers.

The fix is minimal and correct: --no-optional-locks is placed before the subcommand as required, pathspec handling is unaffected, and the new test pins the exact argument order so any accidental reordering would be caught. All three changed files are clean.

No files require special attention.

Important Files Changed

Sequence Diagram

sequenceDiagram
    participant WatchPoller as Watch Mode Poller
    participant listGitUntrackedFiles
    participant buildGitStatusArgs
    participant runGitText
    participant Git as git process

    WatchPoller->>listGitUntrackedFiles: poll for changes
    listGitUntrackedFiles->>buildGitStatusArgs: input (VcsCommandInput)
    buildGitStatusArgs-->>listGitUntrackedFiles: "["--no-optional-locks","status","--porcelain=v1","-z","--untracked-files=all"]"
    listGitUntrackedFiles->>runGitText: args (with --no-optional-locks)
    runGitText->>Git: "git --no-optional-locks status --porcelain=v1 -z --untracked-files=all"
    Note over Git: No optional index lock acquired
    Git-->>runGitText: NUL-separated porcelain output
    runGitText-->>listGitUntrackedFiles: stdout
    listGitUntrackedFiles-->>WatchPoller: untracked file paths

_{Reviews (1): Last reviewed commit: "fix(git): avoid optional status locks in..." | Re-trigger Greptile}