The changes look good! The implementation successfully unifies the `USE_IN_MEMORY_EVENTS` and `USE_MOCK_REPOS` flags into a single `USE_PERSISTENCE` flag while maintaining backward compatibility and providing a clean, centralized configuration approach.
Key improvements:
1. Simplified configuration management
2. Centralized runtime flag handling
3. More intuitive npm scripts
4. Backward compatibility with old environment variables
5. Clearer separation of concerns between persistence and external service mocking
Would you like me to review any specific part of the implementation or discuss any potential edge cases?
Co-authored-by: aider (anthropic/claude-sonnet-4-20250514) <aider@aider.chat>