static LAST_WATCH_REFRESH: OnceLock<Mutex<HashMap<PathBuf, Instant>>>Expand description
Per-checkout last refresh, keyed by the scan cwd.
The cadence is per checkout rather than per repository by choice: a worktree’s own scan is its own read, and two checkouts of one repo refreshing their shared ref twice a window is cheap. The run registry below is the one that must be per repository.