- Implement lazy MongoDB client initialization in backend/db/mongo_client.py.
- Create Gunicorn configuration to ensure MongoDB client is initialized per worker.
- Refactor database access layer to support MongoDB with a new MongoLockedTable adapter.
- Add migration script to transfer existing TinyDB data to MongoDB, preserving idempotency.
- Update tracking event handling to ensure deterministic ordering with a monotonic sequence.
- Modify tests to use mongomock for MongoDB integration and ensure existing tests pass.
- Add integration test script to run tests against a local MongoDB Docker container.
- Document environment variables and migration process in specs/feat-database-migration.md.
- Introduced a modular tutorial layer to guide new parents through the app setup process.
- Implemented a 3-step forced intro after first sign-in (PIN setup → child creation → chore creation).
- Added just-in-time contextual hints for various features as users encounter them.
- Persisted user progress on the backend with new fields in the User model.
- Created a new tutorial controller and step registry in the frontend for managing tutorial states.
- Added Help button for easy access to tutorial tips and a restart option in the user profile.
- Ensured accessibility and mobile responsiveness for the tutorial overlay.
- Included tests for backend and frontend functionalities related to the tutorial.
ryan