[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/services/image.service.ts

@@ -0,0 +1,64 @@
+import { Injectable } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+export interface ImageRecord {
+  id: string;
+  hash: string;
+  filename: string;
+  mime_type: string;
+  size_bytes: number;
+  width: number;
+  height: number;
+  storage_key: string;
+  created_at: string;
+  tags: string[];
+  duplicate?: boolean;
+}
+
+export interface ImageListResponse {
+  items: ImageRecord[];
+  total: number;
+  limit: number;
+  offset: number;
+}
+
+@Injectable({ providedIn: 'root' })
+export class ImageService {
+  private readonly base = '/api/v1';
+
+  constructor(private http: HttpClient) {}
+
+  upload(file: File, tags: string[]): Observable<ImageRecord> {
+    const form = new FormData();
+    form.append('file', file);
+    if (tags.length) {
+      form.append('tags', tags.join(','));
+    }
+    return this.http.post<ImageRecord>(`${this.base}/images`, form);
+  }
+
+  list(tagFilter: string[] = [], limit = 50, offset = 0): Observable<ImageListResponse> {
+    let params = new HttpParams().set('limit', limit).set('offset', offset);
+    if (tagFilter.length) {
+      params = params.set('tags', tagFilter.join(','));
+    }
+    return this.http.get<ImageListResponse>(`${this.base}/images`, { params });
+  }
+
+  get(id: string): Observable<ImageRecord> {
+    return this.http.get<ImageRecord>(`${this.base}/images/${id}`);
+  }
+
+  getFileUrl(id: string): string {
+    return `${this.base}/images/${id}/file`;
+  }
+
+  updateTags(id: string, tags: string[]): Observable<ImageRecord> {
+    return this.http.patch<ImageRecord>(`${this.base}/images/${id}/tags`, { tags });
+  }
+
+  delete(id: string): Observable<void> {
+    return this.http.delete<void>(`${this.base}/images/${id}`);
+  }
+}