Remove Programs tab and all supporting code

The Programs feature is superseded by Shows, which provides a more
flexible model with schedule slots. This commit removes all Programs
code across frontend and backend:

Frontend:
- Delete admin-program-form component (ts/html/scss)
- Delete program.service.ts and program.ts interface
- Remove Programs tab, form modal, and all CRUD logic from admin
  component (ts + html)

Backend:
- Delete programs API router
- Remove Program ORM model and ProgramCreate/Update/Response schemas
- Remove programs router registration from main.py
- Remove Program from seed data, seed helpers, and truncate/reset

backend/seed.py

@@ -14,24 +14,11 @@ from datetime import date
 from sqlalchemy import select
 
 from app.database import async_session
-from app.models import Program, Show, ShowSchedule, Event, DonationTier, StationConfig
+from app.models import Show, ShowSchedule, Event, DonationTier, StationConfig
 from app.models import HistoryEntry, TeamMember, CommunityHighlight
 
 # ── Seed data ──────────────────────────────────────────────
 
-PROGRAMS: list[dict] = [
-    {"day_of_week": 1, "day_label": "Monday",    "time": "6:00 AM", "title": "Morning Mountain Mist",     "host": "Diana Walsh",    "genre": "Ambient / Nature"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "8:00 AM", "title": "Community Roundup",         "host": "Tom Breen",      "genre": "News / Talk"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "10:00 AM", "title": "Bluegrass Trails",          "host": "Sarah Lynn",     "genre": "Bluegrass"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "12:00 PM", "title": "Lunchtime Jazz",            "host": "Mike Darrow",    "genre": "Jazz"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "2:00 PM", "title": "Folk Roots Hour",           "host": "Nadia Cole",     "genre": "Folk"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "4:00 PM", "title": "Afternoon Acoustics",       "host": "Jen Reeves",     "genre": "Acoustic"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "6:00 PM", "title": "Evening Echoes",            "host": "Carlos Mendez",  "genre": "Indie / Alternative"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "8:00 PM", "title": "Classical Mountains",       "host": "Elena Cross",    "genre": "Classical"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "10:00 PM", "title": "Night Owl Session",         "host": "DJ Kofi",        "genre": "Electronic"},
-    {"day_of_week": 1, "day_label": "Monday",    "time": "12:00 AM", "title": "Late Night Jazz",           "host": "Mike Darrow",    "genre": "Jazz"},
-]
-
 SHOWS: list[dict] = [
     {
         "title": "Morning Mountain Mist",
@@ -345,22 +332,6 @@ COMMUNITY_HIGHLIGHTS: list[dict] = [
 
 # ── Helpers ────────────────────────────────────────────────
 
-async def _upsert_program(session, data: dict) -> None:
-    """Get-or-create a program matched on (day_of_week, time)."""
-    existing = await session.execute(
-        select(Program).where(
-            Program.day_of_week == data["day_of_week"],
-            Program.time == data["time"],
-        )
-    )
-    program = existing.scalar_one_or_none()
-    if program:
-        for key, value in data.items():
-            setattr(program, key, value)
-    else:
-        session.add(Program(**data))
-
-
 async def _upsert_event(session, data: dict) -> None:
     """Get-or-create an event matched on (date, title)."""
     existing = await session.execute(
@@ -476,11 +447,6 @@ async def _upsert_community_highlight(session, data: dict) -> None:
 async def seed() -> None:
     """Populate the database with station data (idempotent)."""
     async with async_session() as session:
-        for data in PROGRAMS:
-            await _upsert_program(session, data)
-        await session.commit()
-        print(f"  ✓ Seeded {len(PROGRAMS)} programs")
-
         for data in EVENTS:
             await _upsert_event(session, data)
         await session.commit()
@@ -524,7 +490,6 @@ async def truncate_all() -> None:
         # Delete child tables first to respect foreign keys
         await session.execute(ShowSchedule.__table__.delete())
         await session.execute(Show.__table__.delete())
-        await session.execute(Program.__table__.delete())
         await session.execute(Event.__table__.delete())
         await session.execute(DonationTier.__table__.delete())
         await session.execute(StationConfig.__table__.delete())