feat: add enable/disable toggle for chore scheduling in ScheduleModal

- Introduced a toggle button to enable or disable chores in the scheduler.
- The toggle will be available in both types of schedulers.
- Added UI design proposal and considerations for mobile dimensions.
- Included E2E tests to ensure toggle state persistence and correct behavior in child view.

backend/models/chore_schedule.py

@@ -44,6 +44,8 @@ class ChoreSchedule(BaseModel):
     interval_hour: int = 0
     interval_minute: int = 0
 
+    enabled: bool = True  # False = schedule paused; chore won't appear for child
+
     @classmethod
     def from_dict(cls, d: dict) -> 'ChoreSchedule':
         return cls(
@@ -59,6 +61,7 @@ class ChoreSchedule(BaseModel):
             interval_has_deadline=d.get('interval_has_deadline', True),
             interval_hour=d.get('interval_hour', 0),
             interval_minute=d.get('interval_minute', 0),
+            enabled=d.get('enabled', True),
             id=d.get('id'),
             created_at=d.get('created_at'),
             updated_at=d.get('updated_at'),
@@ -79,5 +82,6 @@ class ChoreSchedule(BaseModel):
             'interval_has_deadline': self.interval_has_deadline,
             'interval_hour': self.interval_hour,
             'interval_minute': self.interval_minute,
+            'enabled': self.enabled,
         })
         return base