- Fixed MSW event listener memory leaks
- Added proper database connection cleanup
- Fixed MSW server lifecycle management
- Reduced global test timeout to 30s for faster failure detection
- Added resource cleanup in all integration tests
This should resolve the GitHub Actions test hanging issue
- Add comprehensive test utilities for database testing
- Implement connection management tests for in-memory and file databases
- Add transaction tests including nested transactions and savepoints
- Test database lifecycle, error handling, and performance
- Include tests for WAL mode, connection pooling, and constraints
Part of Phase 4: Integration Testing