feat: add PendingRewardDialog, RewardConfirmDialog, and TaskConfirmDialog components

- Implemented PendingRewardDialog for handling pending reward requests.
- Created RewardConfirmDialog for confirming reward redemption.
- Developed TaskConfirmDialog for task confirmation with child name display.

test: add unit tests for ChildView and ParentView components

- Added comprehensive tests for ChildView including task triggering and SSE event handling.
- Implemented tests for ParentView focusing on override modal and SSE event management.

test: add ScrollingList component tests

- Created tests for ScrollingList to verify item fetching, loading states, and custom item classes.
- Included tests for two-step click interactions and edit button display logic.
- Moved toward hashed passwords.

backend/api/reward_api.py

@@ -4,6 +4,7 @@ from tinydb import Query
 from api.utils import send_event_for_current_user, get_validated_user_id
 from events.types.child_rewards_set import ChildRewardsSet
 from db.db import reward_db, child_db
+from db.child_overrides import delete_overrides_for_entity
 from events.types.event import Event
 from events.types.event_types import EventType
 from events.types.reward_modified import RewardModified
@@ -81,6 +82,12 @@ def delete_reward(id):
         return jsonify({'error': 'System rewards cannot be deleted.'}), 403
     removed = reward_db.remove((RewardQuery.id == id) & (RewardQuery.user_id == user_id))
     if removed:
+        # Cascade delete overrides for this reward
+        deleted_count = delete_overrides_for_entity(id)
+        if deleted_count > 0:
+            import logging
+            logging.info(f"Cascade deleted {deleted_count} overrides for reward {id}")
+        
         # remove the reward id from any child's reward list
         ChildQuery = Query()
         for child in child_db.all():