Include morning routine in session_update WebSocket broadcast

_broadcast_session was missing morning_routine in its payload, so the
TV dashboard's applySnapshot reset the list to [] whenever a session
started or updated via WebSocket. A page refresh was required to
restore the items since only the REST dashboard endpoint included them.

Now queries MorningRoutineItem via child→user_id and adds the list to
every session_update broadcast, matching the dashboard snapshot.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/routers/sessions.py

@@ -7,6 +7,7 @@ from sqlalchemy.orm import selectinload
 
 from app.dependencies import get_db, get_current_user
 from app.models.child import Child
+from app.models.morning_routine import MorningRoutineItem
 from app.models.schedule import ScheduleBlock, ScheduleTemplate
 from app.models.subject import Subject  # noqa: F401 — needed for selectinload chain
 from app.models.session import DailySession, TimerEvent
@@ -68,6 +69,18 @@ async def _broadcast_session(db: AsyncSession, session: DailySession) -> None:
     )
     completed_ids = [e.block_id for e in events_result.scalars().all() if e.block_id]
 
+    # Fetch morning routine items via child → user_id
+    child_result = await db.execute(select(Child).where(Child.id == session.child_id))
+    child = child_result.scalar_one_or_none()
+    morning_routine: list[str] = []
+    if child:
+        routine_result = await db.execute(
+            select(MorningRoutineItem)
+            .where(MorningRoutineItem.user_id == child.user_id)
+            .order_by(MorningRoutineItem.order_index, MorningRoutineItem.id)
+        )
+        morning_routine = [item.text for item in routine_result.scalars().all()]
+
     payload = {
         "event": "session_update",
         "session": {
@@ -81,6 +94,7 @@ async def _broadcast_session(db: AsyncSession, session: DailySession) -> None:
         "completed_block_ids": completed_ids,
         "day_start_time": day_start_time,
         "day_end_time": day_end_time,
+        "morning_routine": morning_routine,
     }
     await manager.broadcast(session.child_id, payload)