feat: Implement task and reward tracking feature

- Added tracking events for tasks, penalties, and rewards with timestamps.
- Created new TinyDB table for tracking records to maintain audit history.
- Developed backend API for querying tracking events with filters and pagination.
- Implemented logging for tracking events with per-user rotating log files.
- Added unit tests for tracking event creation, querying, and anonymization.
- Deferred frontend changes for future implementation.
- Established acceptance criteria and documentation for the tracking feature.

feat: Introduce account deletion scheduler

- Implemented a scheduler to delete accounts marked for deletion after a configurable threshold.
- Added new fields to the User model to manage deletion status and attempts.
- Created admin API endpoints for managing deletion thresholds and viewing the deletion queue.
- Integrated error handling and logging for the deletion process.
- Developed unit tests for the deletion scheduler and related API endpoints.
- Documented the deletion process and acceptance criteria.

backend/main.py

@@ -10,6 +10,7 @@ from api.child_api import child_api
 from api.image_api import image_api
 from api.reward_api import reward_api
 from api.task_api import task_api
+from api.tracking_api import tracking_api
 from api.user_api import user_api
 from config.version import get_full_version
 
@@ -37,6 +38,7 @@ app.register_blueprint(task_api)
 app.register_blueprint(image_api)
 app.register_blueprint(auth_api)
 app.register_blueprint(user_api)
+app.register_blueprint(tracking_api)
 
 app.config.update(
     MAIL_SERVER='smtp.gmail.com',