feat: add chore, kindness, and penalty management components

- Implemented ChoreAssignView for assigning chores to children.
- Created ChoreConfirmDialog for confirming chore completion.
- Developed KindnessAssignView for assigning kindness acts.
- Added PenaltyAssignView for assigning penalties.
- Introduced ChoreEditView and ChoreView for editing and viewing chores.
- Created KindnessEditView and KindnessView for managing kindness acts.
- Developed PenaltyEditView and PenaltyView for managing penalties.
- Added TaskSubNav for navigation between chores, kindness acts, and penalties.

backend/models/task.py

@@ -1,20 +1,28 @@
 from dataclasses import dataclass
+from typing import Literal
 from models.base import BaseModel
 
+TaskType = Literal['chore', 'kindness', 'penalty']
+
 @dataclass
 class Task(BaseModel):
     name: str
     points: int
-    is_good: bool
+    type: TaskType
     image_id: str | None = None
     user_id: str | None = None
 
     @classmethod
     def from_dict(cls, d: dict):
+        # Support legacy is_good field for migration
+        task_type = d.get('type')
+        if task_type is None:
+            is_good = d.get('is_good', True)
+            task_type = 'chore' if is_good else 'penalty'
         return cls(
             name=d.get('name'),
             points=d.get('points', 0),
-            is_good=d.get('is_good', True),
+            type=task_type,
             image_id=d.get('image_id'),
             user_id=d.get('user_id'),
             id=d.get('id'),
@@ -27,8 +35,13 @@ class Task(BaseModel):
         base.update({
             'name': self.name,
             'points': self.points,
-            'is_good': self.is_good,
+            'type': self.type,
             'image_id': self.image_id,
             'user_id': self.user_id
         })
         return base
+
+    @property
+    def is_good(self) -> bool:
+        """Backward compatibility: chore and kindness are 'good', penalty is not."""
+        return self.type != 'penalty'