- FsLockManager: cross-process exclusive flock(.lock) with per-thread
re-entry. withWriteLock { body } acquires once on a fresh thread
and reuses on nested calls — so transaction { insert(); insert() }
doesn't self-deadlock.
- FsEventStore: insert / delete / delete(filter) / delete(filters) /
delete(id) / deleteExpiredEvents / transaction now run under
withWriteLock. The `*Locked` helpers expose the lock-free body for
re-entrant callers (transaction body, vanish/deletion cascades,
expiration sweep). close() releases the lock channel.
- scrub(): wipes idx/ and rebuilds every entry from the canonical
events. Slots, tombstones and seed are left alone — slots can pin
data the canonical pass doesn't see, and tombstone removal is a
deliberate "un-forget" per the design plan.
- compact(): drops dangling idx/ entries whose canonical no longer
exists. Cheap — only touches idx/, never opens a JSON.
Tests: 11 new in FsMaintenanceTest covering lock file presence,
transaction commit / propagated exception with kept-prior-events
semantics, re-entrant lock from inside a transaction, scrub
rebuilding idx + FTS after a manual wipe, scrub preserving the
replaceable slot, compact dropping dangling and leaving valid alone,
close idempotence + reopen, and two-thread concurrent insert
serialisation. 97 fs tests green.
Claude
47e924ed40