Add TimeSelector and ScheduleModal components with tests

- Implemented TimeSelector component for selecting time with AM/PM toggle and minute/hour increment/decrement functionality.
- Created ScheduleModal component for scheduling chores with options for specific days or intervals.
- Added utility functions for scheduling logic in scheduleUtils.ts.
- Developed comprehensive tests for TimeSelector and scheduleUtils functions to ensure correct behavior.

backend/db/db.py

@@ -75,6 +75,8 @@ pending_reward_path = os.path.join(base_dir, 'pending_rewards.json')
 users_path = os.path.join(base_dir, 'users.json')
 tracking_events_path = os.path.join(base_dir, 'tracking_events.json')
 child_overrides_path = os.path.join(base_dir, 'child_overrides.json')
+chore_schedules_path = os.path.join(base_dir, 'chore_schedules.json')
+task_extensions_path = os.path.join(base_dir, 'task_extensions.json')
 
 # Use separate TinyDB instances/files for each collection
 _child_db = TinyDB(child_path, indent=2)
@@ -85,6 +87,8 @@ _pending_rewards_db = TinyDB(pending_reward_path, indent=2)
 _users_db = TinyDB(users_path, indent=2)
 _tracking_events_db = TinyDB(tracking_events_path, indent=2)
 _child_overrides_db = TinyDB(child_overrides_path, indent=2)
+_chore_schedules_db = TinyDB(chore_schedules_path, indent=2)
+_task_extensions_db = TinyDB(task_extensions_path, indent=2)
 
 # Expose table objects wrapped with locking
 child_db = LockedTable(_child_db)
@@ -95,6 +99,8 @@ pending_reward_db = LockedTable(_pending_rewards_db)
 users_db = LockedTable(_users_db)
 tracking_events_db = LockedTable(_tracking_events_db)
 child_overrides_db = LockedTable(_child_overrides_db)
+chore_schedules_db = LockedTable(_chore_schedules_db)
+task_extensions_db = LockedTable(_task_extensions_db)
 
 if os.environ.get('DB_ENV', 'prod') == 'test':
     child_db.truncate()
@@ -105,4 +111,6 @@ if os.environ.get('DB_ENV', 'prod') == 'test':
     users_db.truncate()
     tracking_events_db.truncate()
     child_overrides_db.truncate()
+    chore_schedules_db.truncate()
+    task_extensions_db.truncate()