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jake
ff3c8a737b
Serialize all backup operations through a promise-based queue (`withBackupLock`) to prevent race conditions under concurrent requests. Extract internal helpers so `pruneBackups` and `deleteBackup` can participate in the same lock. Strengthen `restoreFromBackup`: write the temp file alongside the live database (`dbDir`), validate it with a full integrity check, foreign key check, and a required-tables list before touching the live DB, then use a synchronous `renameSync` for an atomic swap. Clear WAL/SHM files synchronously in the same tick to avoid interleaving. Run migrations after restore so older backups are brought up-to-date automatically. Add milliseconds to all backup timestamps (`HHmmssSSS`) to avoid filename collisions when backups are created in rapid succession. Update filename regexes to accept both the old and new formats.