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Martin Vogelandpcristin
e5bb74916a
Distilled from #738: the watcher now prunes a watched project whose root directory has genuinely disappeared - deleting the cached DB (+wal/shm, validated name, cache-dir-only paths) and removing the watch entry - so vanished worktrees stop being watched forever (#286). Hardened beyond the original PR to remove a data-loss hazard (the cached DB can hold user-authored data such as the ADR, unrecoverable once deleted): - Only ENOENT/ENOTDIR stat failures count as missing. Any other failure (EACCES, EIO, transient mounts, macOS TCC revocation) resets the streak and logs watcher.root_stat_error with the errno; Windows (mingw/UCRT) maps not-found to ENOENT so the check holds there. - Pruning requires BOTH >=3 consecutive missing polls AND a sustained- absence grace window since the streak's first miss (default 600s, override via CBM_WATCHER_PRUNE_GRACE_S), tracked with monotonic cbm_now_ms. - Root reappearance resets streak + timestamp (watcher.root_restored). - The pruned entry is released via the deferred-free list poll_once drains (one freeing model shared with cbm_watcher_unwatch). Limitation: only currently-watched projects are pruned; stale DBs left by older sessions are out of scope. Co-authored-by: pcristin <xxxokzxxx@protonmail.com> Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>