static LAST_MEASURED: OnceLock<Mutex<HashMap<(PathBuf, String), BaseMeasurement>>>Expand description
What each checkout’s last completed refresh measured, so a scan can carry it onto the seat’s row without waiting for the fetch itself. Pruned on the same window as the kick, and the row keeps its stored base when an entry goes.
Keyed by the base branch as well as the checkout: one worktree can draw
two bases (a release branch against origin/main, then a hotfix against
origin/develop), and a measurement of one must never answer the other.