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The Programs feature is superseded by Shows, which provides a more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

src/app/admin/admin.component.ts

@@ -3,7 +3,6 @@ import { CommonModule, AsyncPipe } from '@angular/common';
 import { FormsModule } from '@angular/forms';
 import { BehaviorSubject, firstValueFrom } from 'rxjs';
 
-import { Program } from '../interfaces/program';
 import { Show } from '../interfaces/show';
 import { Event } from '../interfaces/event';
 import { Tier } from '../interfaces/tier';
@@ -11,7 +10,6 @@ import { StationConfig } from '../interfaces/station-config';
 import { HistoryEntry } from '../interfaces/history-entry';
 import { TeamMember } from '../interfaces/team-member';
 import { CommunityHighlight } from '../interfaces/community-highlight';
-import { ProgramService } from '../services/program.service';
 import { ShowService } from '../services/show.service';
 import { EventService } from '../services/event.service';
 import { TierService } from '../services/tier.service';
@@ -19,7 +17,6 @@ import { StationConfigService } from '../services/station-config.service';
 import { HistoryEntryService } from '../services/history-entry.service';
 import { TeamMemberService } from '../services/team-member.service';
 import { CommunityHighlightService } from '../services/community-highlight.service';
-import { AdminProgramFormComponent } from './admin-program-form.component';
 import { AdminShowFormComponent } from './admin-show-form.component';
 import { AdminEventFormComponent } from './admin-event-form.component';
 import { AdminTierFormComponent } from './admin-tier-form.component';
@@ -28,7 +25,7 @@ import { AdminHistoryFormComponent } from './admin-history-form.component';
 import { AdminTeamFormComponent } from './admin-team-form.component';
 import { AdminCommunityFormComponent } from './admin-community-form.component';
 
-type TabKey = 'shows' | 'programs' | 'events' | 'tiers' | 'station' | 'history' | 'team' | 'community';
+type TabKey = 'shows' | 'events' | 'tiers' | 'station' | 'history' | 'team' | 'community';
 
 @Component({
   selector: 'app-admin',
@@ -38,7 +35,6 @@ type TabKey = 'shows' | 'programs' | 'events' | 'tiers' | 'station' | 'history'
     AsyncPipe,
     FormsModule,
     AdminShowFormComponent,
-    AdminProgramFormComponent,
     AdminEventFormComponent,
     AdminTierFormComponent,
     AdminStationFormComponent,
@@ -50,7 +46,6 @@ type TabKey = 'shows' | 'programs' | 'events' | 'tiers' | 'station' | 'history'
   styleUrl: './admin.component.scss',
 })
 export class AdminComponent implements OnInit {
-  private programService = inject(ProgramService);
   private showService = inject(ShowService);
   private eventService = inject(EventService);
   private tierService = inject(TierService);
@@ -63,7 +58,6 @@ export class AdminComponent implements OnInit {
 
   /** Item currently being edited (set by editXxx, cleared on save/close). */
   editingShow: Show | null = null;
-  editingProgram: Program | null = null;
   editingEvent: Event | null = null;
   editingTier: Tier | null = null;
   editingHistory: HistoryEntry | null = null;
@@ -72,7 +66,6 @@ export class AdminComponent implements OnInit {
 
   /** BehaviorSubjects guarantee change detection via the async pipe — start empty, populated on load. */
   readonly shows$ = new BehaviorSubject<Show[]>([]);
-  readonly programs$ = new BehaviorSubject<Program[]>([]);
   readonly events$ = new BehaviorSubject<Event[]>([]);
   readonly tiers$ = new BehaviorSubject<Tier[]>([]);
   readonly stationConfig$ = new BehaviorSubject<StationConfig | null>(null);
@@ -81,7 +74,6 @@ export class AdminComponent implements OnInit {
   readonly communityHighlights$ = new BehaviorSubject<CommunityHighlight[]>([]);
 
   showShowForm = false;
-  showProgramForm = false;
   showEventForm = false;
   showTierForm = false;
   showStationForm = false;
@@ -98,11 +90,6 @@ export class AdminComponent implements OnInit {
     this.shows$.next(data);
   }
 
-  async reloadPrograms(): Promise<void> {
-    const data = await firstValueFrom(this.programService.getPrograms());
-    this.programs$.next(data);
-  }
-
   async reloadEvents(): Promise<void> {
     const data = await firstValueFrom(this.eventService.getEvents());
     this.events$.next(data);
@@ -136,7 +123,6 @@ export class AdminComponent implements OnInit {
   async loadAll(): Promise<void> {
     await Promise.all([
       this.reloadShows(),
-      this.reloadPrograms(),
       this.reloadEvents(),
       this.reloadTiers(),
       this.reloadStationConfig(),
@@ -175,35 +161,6 @@ export class AdminComponent implements OnInit {
     await this.reloadShows();
   }
 
-  // ── Program CRUD ────────────────────────────────────────
-
-  openProgramForm(): void {
-    this.editingProgram = null;
-    this.showProgramForm = true;
-  }
-
-  editProgram(program: Program): void {
-    this.editingProgram = program;
-    this.showProgramForm = true;
-  }
-
-  onProgramSaved(): void {
-    this.reloadPrograms();
-    this.showProgramForm = false;
-    this.editingProgram = null;
-  }
-
-  onProgramClosed(): void {
-    this.showProgramForm = false;
-    this.editingProgram = null;
-  }
-
-  async deleteProgram(id: number): Promise<void> {
-    if (!confirm('Delete this program?')) return;
-    await firstValueFrom(this.programService.deleteProgram(id));
-    await this.reloadPrograms();
-  }
-
   // ── Event CRUD ──────────────────────────────────────────
 
   openEventForm(): void {