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.

backend/tests/test_routine_feature_api.py

@@ -0,0 +1,187 @@
+from flask import Flask
+from tinydb import Query
+from werkzeug.security import generate_password_hash
+
+from tests.conftest import TEST_SECRET_KEY, TEST_REFRESH_TOKEN_EXPIRY_DAYS
+from api.auth_api import auth_api
+from api.routine_api import routine_api
+from api.routine_item_api import routine_item_api
+from api.child_routine_api import child_routine_api
+from api.routine_schedule_api import routine_schedule_api
+from db.db import (
+    users_db,
+    child_db,
+    routine_db,
+    routine_items_db,
+    routine_schedules_db,
+    routine_extensions_db,
+    pending_confirmations_db,
+)
+
+
+TEST_USER_ID = 'routine-user-1'
+TEST_EMAIL = 'routine-user@example.com'
+TEST_PASSWORD = 'testpass'
+
+
+def add_test_user():
+    users_db.remove(Query().email == TEST_EMAIL)
+    users_db.insert({
+        'id': TEST_USER_ID,
+        'first_name': 'Routine',
+        'last_name': 'Tester',
+        'email': TEST_EMAIL,
+        'password': generate_password_hash(TEST_PASSWORD),
+        'verified': True,
+        'image_id': 'boy01',
+    })
+
+
+def login_and_set_cookie(client):
+    resp = client.post('/auth/login', json={'email': TEST_EMAIL, 'password': TEST_PASSWORD})
+    assert resp.status_code == 200
+
+
+def seed_child(child_id: str):
+    child_db.remove(Query().id == child_id)
+    child_db.insert({
+        'id': child_id,
+        'name': 'Routine Kid',
+        'age': 9,
+        'tasks': [],
+        'routines': [],
+        'rewards': [],
+        'points': 0,
+        'image_id': 'boy01',
+        'user_id': TEST_USER_ID,
+    })
+
+
+def _first_routine_id():
+    routines = routine_db.all()
+    assert routines
+    return routines[0]['id']
+
+
+def _first_confirmation_id():
+    confirmations = pending_confirmations_db.all()
+    assert confirmations
+    return confirmations[0]['id']
+
+
+def _make_client():
+    app = Flask(__name__)
+    app.register_blueprint(auth_api, url_prefix='/auth')
+    app.register_blueprint(routine_api)
+    app.register_blueprint(routine_item_api)
+    app.register_blueprint(child_routine_api)
+    app.register_blueprint(routine_schedule_api)
+    app.config['TESTING'] = True
+    app.config['SECRET_KEY'] = TEST_SECRET_KEY
+    app.config['REFRESH_TOKEN_EXPIRY_DAYS'] = TEST_REFRESH_TOKEN_EXPIRY_DAYS
+    return app
+
+
+def setup_function(_):
+    routine_db.truncate()
+    routine_items_db.truncate()
+    routine_schedules_db.truncate()
+    routine_extensions_db.truncate()
+    pending_confirmations_db.truncate()
+    child_db.truncate()
+
+
+def test_routine_crud_flow():
+    app = _make_client()
+    with app.test_client() as client:
+        add_test_user()
+        login_and_set_cookie(client)
+
+        add_resp = client.put('/routine/add', json={'name': 'Morning Routine', 'points': 8, 'image_id': 'sun'})
+        assert add_resp.status_code == 201
+
+        rid = _first_routine_id()
+
+        list_resp = client.get('/routine/list')
+        assert list_resp.status_code == 200
+        routines = list_resp.get_json()['routines']
+        assert len(routines) == 1
+        assert routines[0]['name'] == 'Morning Routine'
+
+        edit_resp = client.put(f'/routine/{rid}/edit', json={'points': 10})
+        assert edit_resp.status_code == 200
+        assert edit_resp.get_json()['points'] == 10
+
+        delete_resp = client.delete(f'/routine/{rid}')
+        assert delete_resp.status_code == 200
+        assert routine_db.all() == []
+
+
+def test_child_routine_assignment_confirmation_and_approval():
+    app = _make_client()
+    with app.test_client() as client:
+        add_test_user()
+        login_and_set_cookie(client)
+
+        seed_child('routine-child-1')
+        client.put('/routine/add', json={'name': 'Evening Routine', 'points': 6, 'image_id': 'moon'})
+        rid = _first_routine_id()
+
+        add_item_resp = client.put(f'/routine/{rid}/item/add', json={'name': 'Brush Teeth', 'order': 0})
+        assert add_item_resp.status_code == 201
+
+        assign_resp = client.post('/child/routine-child-1/assign-routine', json={'routine_id': rid})
+        assert assign_resp.status_code == 200
+
+        list_resp = client.get('/child/routine-child-1/list-routines')
+        assert list_resp.status_code == 200
+        routines = list_resp.get_json()['routines']
+        assert len(routines) == 1
+        assert routines[0]['id'] == rid
+        assert routines[0]['items'][0]['name'] == 'Brush Teeth'
+
+        confirm_resp = client.post('/child/routine-child-1/confirm-routine', json={'routine_id': rid})
+        assert confirm_resp.status_code == 200
+
+        confirmation_id = _first_confirmation_id()
+        approve_resp = client.post(f'/child/routine-child-1/approve-routine/{confirmation_id}')
+        assert approve_resp.status_code == 200
+
+        child = child_db.get(Query().id == 'routine-child-1')
+        assert child['points'] == 6
+
+
+def test_routine_schedule_and_extend_flow():
+    app = _make_client()
+    with app.test_client() as client:
+        add_test_user()
+        login_and_set_cookie(client)
+
+        seed_child('routine-child-2')
+        client.put('/routine/add', json={'name': 'School Routine', 'points': 5, 'image_id': 'book'})
+        rid = _first_routine_id()
+
+        client.post('/child/routine-child-2/assign-routine', json={'routine_id': rid})
+
+        set_resp = client.put(
+            f'/child/routine-child-2/routine/{rid}/schedule',
+            json={
+                'mode': 'days',
+                'day_configs': [{'day': 1, 'hour': 8, 'minute': 0}],
+                'default_hour': 8,
+                'default_minute': 0,
+                'default_has_deadline': True,
+            },
+        )
+        assert set_resp.status_code == 200
+
+        get_resp = client.get(f'/child/routine-child-2/routine/{rid}/schedule')
+        assert get_resp.status_code == 200
+        assert get_resp.get_json()['mode'] == 'days'
+
+        extend_resp = client.post(
+            f'/child/routine-child-2/routine/{rid}/extend',
+            json={'date': '2026-05-04'},
+        )
+        assert extend_resp.status_code == 200
+        assert extend_resp.get_json()['routine_id'] == rid