Remove school day hours from schedule templates

The day progress bar no longer uses day start/end times (it uses block
durations instead), so the field is no longer needed.

Removed from: Admin UI, schedule store, schedule model/schemas/router,
session broadcast payload, dashboard snapshot, and startup migrations.
DB columns are left in place (harmless, no migration required).

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

backend/app/main.py

@@ -30,8 +30,6 @@ async def lifespan(app: FastAPI):
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.create_all)
         # Idempotent column additions for schema migrations
-        await _add_column_if_missing(conn, "schedule_templates", "day_start_time", "TIME NULL")
-        await _add_column_if_missing(conn, "schedule_templates", "day_end_time", "TIME NULL")
         await _add_column_if_missing(conn, "schedule_blocks", "duration_minutes", "INT NULL")
         await _add_column_if_missing(conn, "schedule_blocks", "break_time_enabled", "TINYINT(1) NOT NULL DEFAULT 0")
         await _add_column_if_missing(conn, "schedule_blocks", "break_time_minutes", "INT NULL")

backend/app/models/schedule.py

@@ -14,8 +14,6 @@ class ScheduleTemplate(TimestampMixin, Base):
     )
     name: Mapped[str] = mapped_column(String(100), nullable=False)
     is_default: Mapped[bool] = mapped_column(Boolean, default=False)
-    day_start_time: Mapped[time | None] = mapped_column(Time, nullable=True)
-    day_end_time: Mapped[time | None] = mapped_column(Time, nullable=True)
 
     user: Mapped["User"] = relationship("User", back_populates="schedule_templates")  # noqa: F821
     child: Mapped["Child | None"] = relationship("Child")  # noqa: F821

backend/app/routers/dashboard.py

@@ -13,7 +13,7 @@ from app.dependencies import get_db
 from app.models.child import Child
 from app.models.morning_routine import MorningRoutineItem
 from app.models.break_activity import BreakActivityItem
-from app.models.schedule import ScheduleBlock, ScheduleTemplate
+from app.models.schedule import ScheduleBlock
 from app.models.subject import Subject  # noqa: F401 — needed for selectinload chain
 from app.models.session import DailySession, TimerEvent
 from app.schemas.session import DashboardSnapshot
@@ -45,8 +45,6 @@ async def get_dashboard(child_id: int, db: AsyncSession = Depends(get_db)):
     blocks = []
     completed_ids = []
     block_elapsed_seconds = 0
-    day_start_time = None
-    day_end_time = None
 
     if session and session.template_id:
         blocks_result = await db.execute(
@@ -57,14 +55,6 @@ async def get_dashboard(child_id: int, db: AsyncSession = Depends(get_db)):
         )
         blocks = blocks_result.scalars().all()
 
-        template_result = await db.execute(
-            select(ScheduleTemplate).where(ScheduleTemplate.id == session.template_id)
-        )
-        template = template_result.scalar_one_or_none()
-        if template:
-            day_start_time = template.day_start_time
-            day_end_time = template.day_end_time
-
         events_result = await db.execute(
             select(TimerEvent).where(
                 TimerEvent.session_id == session.id,
@@ -101,8 +91,6 @@ async def get_dashboard(child_id: int, db: AsyncSession = Depends(get_db)):
         completed_block_ids=completed_ids,
         block_elapsed_seconds=block_elapsed_seconds,
         is_paused=is_paused,
-        day_start_time=day_start_time,
-        day_end_time=day_end_time,
         morning_routine=morning_routine,
         break_activities=break_activities,
     )

backend/app/routers/schedules.py

@@ -44,8 +44,6 @@ async def create_template(
         name=body.name,
         child_id=body.child_id,
         is_default=body.is_default,
-        day_start_time=body.day_start_time,
-        day_end_time=body.day_end_time,
     )
     db.add(template)
     await db.flush()  # get template.id before adding blocks

backend/app/routers/sessions.py

@@ -9,7 +9,7 @@ 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.break_activity import BreakActivityItem
-from app.models.schedule import ScheduleBlock, ScheduleTemplate
+from app.models.schedule import ScheduleBlock
 from app.models.subject import Subject  # noqa: F401 — needed for selectinload chain
 from app.models.session import DailySession, TimerEvent
 from app.models.user import User
@@ -23,8 +23,6 @@ router = APIRouter(prefix="/api/sessions", tags=["sessions"])
 async def _broadcast_session(db: AsyncSession, session: DailySession) -> None:
     """Build a snapshot dict and broadcast it to all connected TVs for this child."""
     blocks = []
-    day_start_time = None
-    day_end_time = None
 
     if session.template_id:
         blocks_result = await db.execute(
@@ -56,14 +54,6 @@ async def _broadcast_session(db: AsyncSession, session: DailySession) -> None:
             for b in blocks_result.scalars().all()
         ]
 
-        template_result = await db.execute(
-            select(ScheduleTemplate).where(ScheduleTemplate.id == session.template_id)
-        )
-        template = template_result.scalar_one_or_none()
-        if template:
-            day_start_time = str(template.day_start_time) if template.day_start_time else None
-            day_end_time = str(template.day_end_time) if template.day_end_time else None
-
     # Gather completed block IDs from timer events
     events_result = await db.execute(
         select(TimerEvent).where(
@@ -105,8 +95,6 @@ async def _broadcast_session(db: AsyncSession, session: DailySession) -> None:
         },
         "blocks": blocks,
         "completed_block_ids": completed_ids,
-        "day_start_time": day_start_time,
-        "day_end_time": day_end_time,
         "morning_routine": morning_routine,
         "break_activities": break_activities,
     }

backend/app/schemas/schedule.py

@@ -47,8 +47,6 @@ class ScheduleTemplateCreate(BaseModel):
     name: str
     child_id: int | None = None
     is_default: bool = False
-    day_start_time: time | None = None
-    day_end_time: time | None = None
     blocks: list[ScheduleBlockCreate] = []
 
 
@@ -56,8 +54,6 @@ class ScheduleTemplateUpdate(BaseModel):
     name: str | None = None
     child_id: int | None = None
     is_default: bool | None = None
-    day_start_time: time | None = None
-    day_end_time: time | None = None
 
 
 class ScheduleTemplateOut(BaseModel):
@@ -65,8 +61,6 @@ class ScheduleTemplateOut(BaseModel):
     name: str
     child_id: int | None
     is_default: bool
-    day_start_time: time | None
-    day_end_time: time | None
     blocks: list[ScheduleBlockOut] = []
 
     model_config = {"from_attributes": True}

backend/app/schemas/session.py

@@ -1,4 +1,4 @@
-from datetime import date, datetime, time
+from datetime import date, datetime
 from pydantic import BaseModel
 from app.schemas.schedule import ScheduleBlockOut
 from app.schemas.child import ChildOut
@@ -44,7 +44,5 @@ class DashboardSnapshot(BaseModel):
     completed_block_ids: list[int] = []
     block_elapsed_seconds: int = 0  # seconds already elapsed for the current block
     is_paused: bool = False          # whether the current block's timer is paused
-    day_start_time: time | None = None
-    day_end_time: time | None = None
     morning_routine: list[str] = []  # text items shown on TV during greeting state
     break_activities: list[str] = []  # text items shown on TV during break time