- Simplified metadata loading in IdentityManager by combining context managers.
- Updated LegacyMigrator to exclude 'id' from common columns during migration to prevent collisions.
- Increased SQLite connection timeout in DatabaseProvider for improved reliability.
- Removed unnecessary thread patching in test configuration.
- Added concurrency stress tests for database operations and identity management.
- Introduced database migration tests to validate legacy data handling and migration success.
