Add integration testing infrastructure with Podman Compose

- Add docker/podman-compose.yml for Immich server (no ML)
- Add test-data/sample-photos/ with 3 public domain images
- Add scripts/start-immich.sh for container startup + admin/API key creation
- Add scripts/seed-data.sh for uploading test photos and creating albums
- Add scripts/stop-immich.sh for cleanup with volume destruction
- Add scripts/run-example.sh wrapper (fixed env var export)
- Update examples to use IMMICH_URL and IMMICH_API_KEY env vars
- Add .github/workflows/integration-test.yml for CI
- Update assets.list() to use /search/metadata endpoint
- Update AGENTS.md with example running instructions
- Add 5 new examples: search_metadata, album_management, timeline_browsing,
  delete_assets, server_info

docker/podman-compose.yml

@@ -0,0 +1,63 @@
+name: immich
+
+services:
+  immich-server:
+    container_name: immich_server
+    image: ghcr.io/immich-app/immich-server:v2
+    command: ['start.sh', 'immich']
+    ports:
+      - 2283:2283
+    environment:
+      UPLOAD_LOCATION: /usr/src/app/upload
+      DB_HOSTNAME: postgres
+      DB_USERNAME: postgres
+      DB_PASSWORD: postgres
+      DB_DATABASE_NAME: immich
+      REDIS_HOSTNAME: redis
+      DB_PORT: 5432
+    volumes:
+      - uploads:/usr/src/app/upload
+    depends_on:
+      postgres:
+        condition: service_started
+      redis:
+        condition: service_started
+    healthcheck:
+      test: ['CMD', 'curl', '-f', 'http://localhost:2283/api/server/ping']
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: unless-stopped
+
+  postgres:
+    container_name: immich_postgres
+    image: tensorchord/pgvecto-rs:pg16-v0.3.0
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: immich
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U postgres -d immich']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
+    restart: unless-stopped
+
+  redis:
+    container_name: immich_redis
+    image: redis:7-alpine
+    healthcheck:
+      test: ['CMD', 'redis-cli', 'ping']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 5s
+    restart: unless-stopped
+
+volumes:
+  uploads:
+  pgdata: