The Dolt stats subdatabase at .dolt/stats/.dolt/noms/LOCK was causing
"cannot update manifest: database is read only" errors after crashes.
Changes:
- cleanupStaleDoltLock now also cleans stats and oldgen subdatabase LOCKs
- Add dolt_stats_stop() call to fully stop stats background worker
- Set dolt_stats_auto_refresh_interval=0 to prevent stats restart
Fixes bd-dolt.1
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Executed-By: mayor
Role: mayor