Charlie Marsh 8436b749a4 Bound Git root discovery for metadata enrichment (#42132) ...

## Why

Git root discovery is optional metadata work, but filesystem probes can block. They should not exhaust Tokio's blocking pool, delay runtime shutdown, or prevent later turns from observing repository changes.

## What changed

- Add a shared `GitRootDiscovery` service that coalesces concurrent lookups for the same working directory and limits probes across directories.
- Run probes on detached threads, retain in-flight work across caller cancellation, and discard completed results instead of caching them.
- Use the service for turn and memory metadata enrichment, abort unused turn enrichment when its state is dropped, and limit memory metadata waits to one second.

## Testing

Add coverage for probe sharing, capacity limits, cancellation, fresh discovery, runtime shutdown, memory timeouts, and repositories restored after startup prewarming.

GitOrigin-RevId: bca46fc263e7a12a2f69146d8a0b3e7c7e0846cb

2026-09-01 20:41:32 +00:00

..

src

Bound Git root discovery for metadata enrichment (#42132)

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BUILD.bazel

Bound Git root discovery for metadata enrichment (#42132)

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Cargo.toml

Bound Git root discovery for metadata enrichment (#42132)

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