[Spec Kit] Implementation progress

Implements all 88 tasks for the Reaction Image Board (specs/001-reaction-image-board):

- docker-compose.yml: postgres, minio, minio-init, api, ui services with healthchecks
- api/: FastAPI app with SQLAlchemy 2.x async, Alembic migrations, S3/MinIO storage,
  full integration + unit test suite (pytest + pytest-asyncio)
- ui/: Angular 19 standalone app (Library, Upload, Detail, NotFound components)
- .env.example: all required environment variables
- .gitignore: Python, Node, Docker, IDE, .env patterns

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

ui/src/app/library/library.component.spec.ts

@@ -0,0 +1,49 @@
+import { TestBed } from '@angular/core/testing';
+import { provideRouter } from '@angular/router';
+import { provideHttpClient } from '@angular/common/http';
+import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
+import { of } from 'rxjs';
+import { LibraryComponent } from './library.component';
+import { ImageService } from '../services/image.service';
+import { routes } from '../app.routes';
+
+describe('LibraryComponent', () => {
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [LibraryComponent],
+      providers: [provideHttpClient(), provideHttpClientTesting(), provideRouter(routes)],
+    }).compileComponents();
+  });
+
+  it('should render image grid from service response', () => {
+    const fixture = TestBed.createComponent(LibraryComponent);
+    const component = fixture.componentInstance;
+    const imgSvc = TestBed.inject(ImageService);
+    spyOn(imgSvc, 'list').and.returnValue(
+      of({
+        items: [
+          { id: '1', filename: 'a.jpg', tags: ['cat'], hash: '', mime_type: 'image/jpeg', size_bytes: 1, width: 1, height: 1, storage_key: '', created_at: '' },
+        ],
+        total: 1,
+        limit: 50,
+        offset: 0,
+      })
+    );
+    fixture.detectChanges();
+    const de = fixture.nativeElement as HTMLElement;
+    expect(de.querySelectorAll('.image-card').length).toBe(1);
+  });
+
+  it('should trigger new API call with tags param on filter change', () => {
+    const fixture = TestBed.createComponent(LibraryComponent);
+    const component = fixture.componentInstance;
+    const imgSvc = TestBed.inject(ImageService);
+    const listSpy = spyOn(imgSvc, 'list').and.returnValue(
+      of({ items: [], total: 0, limit: 50, offset: 0 })
+    );
+    fixture.detectChanges();
+
+    component.applyFilter(['cat', 'funny']);
+    expect(listSpy).toHaveBeenCalledWith(['cat', 'funny'], jasmine.any(Number), jasmine.any(Number));
+  });
+});