feat: Implement routines feature with CRUD operations and child assignment

- Add backend routines management with add, get, update, delete, and list functionalities.
- Create models for Routine, RoutineItem, RoutineSchedule, and RoutineExtension.
- Develop event types for routine confirmation and modification.
- Implement frontend components for routine assignment, confirmation dialog, and routine management views.
- Add unit tests for routine API and integration tests for routine CRUD flow.
- Create end-to-end test plan for routines feature covering parent and child interactions.

frontend/src/components/child/ParentView.vue

@@ -937,6 +937,16 @@ function goToAssignRewards() {
     })
   }
 }
+
+function goToAssignRoutines() {
+  if (child.value?.id) {
+    router.push({
+      name: 'RoutineAssignView',
+      params: { id: child.value.id },
+      query: { name: child.value.name },
+    })
+  }
+}
 </script>
 
 <template>
@@ -1162,6 +1172,9 @@ function goToAssignRewards() {
       <button v-if="child" class="btn btn-danger" @click="goToAssignBadHabits">
         Assign Penalties
       </button>
+      <button v-if="child" class="btn btn-primary" @click="goToAssignRoutines">
+        Assign Routines
+      </button>
       <button v-if="child" class="btn btn-green" @click="goToAssignRewards">Assign Rewards</button>
     </div>
 
@@ -1196,7 +1209,8 @@ function goToAssignRewards() {
     <!-- Schedule Modal -->
     <ScheduleModal
       v-if="showScheduleModal && scheduleTarget && child"
-      :task="scheduleTarget"
+      :entity="scheduleTarget"
+      entityType="task"
       :childId="child.id"
       :schedule="scheduleTarget.schedule ?? null"
       @saved="onScheduleSaved"