Restoring a backup copied the backup's schema_version into the live DB.
Once SCHEMA_VERSION moves past 1, restoring an older backup (already
adapted to the current schema by the migration scripts) would leave an
old stamp, so the next launch re-runs migrations against an
already-adapted schema and blocks the app. schema_version is now
excluded from the restore copy; the live stamp is correct by
construction. Regression test tampers a backup's stamp and asserts the
live one survives.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
David