Adds the new shows admin screen and drives schedule from it

src/app/services/upload.service.ts

@@ -0,0 +1,24 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { firstValueFrom } from 'rxjs';
+
+import { getAppConfig } from './app-config.service';
+
+/** Shared service for uploading image files via the admin API. */
+@Injectable({
+  providedIn: 'root',
+})
+export class UploadService {
+  private http = inject(HttpClient);
+  private baseUrl = `${getAppConfig().apiBaseUrl}/api/upload/image`;
+
+  /** Upload an image file. Returns the relative URL (e.g. `uploads/abc123.png`). */
+  async uploadImage(file: File): Promise<string> {
+    const formData = new FormData();
+    formData.append('file', file);
+    const response = await firstValueFrom(
+      this.http.post<{ url: string }>(this.baseUrl, formData),
+    );
+    return response.url;
+  }
+}