feat(extraction): add extraction-service to docker-compose + .env.example

- docker-compose.yml: extraction-service on port 4005 with Traefik, Loki, healthcheck
- .env.example: PYTHON_SIDECAR_URL, DEFAULT_MODEL_ID, GEMINI_API_KEY

.env.example

@@ -20,5 +20,10 @@ STRIPE_WEBHOOK_SECRET=whsec_...
 STRIPE_PRICE_PRO=price_...
 STRIPE_PRICE_ENTERPRISE=price_...
 
+# ── Extraction Service (port 4005 + Python sidecar 4006) ─────
+PYTHON_SIDECAR_URL=http://localhost:4006
+DEFAULT_MODEL_ID=gemini-2.5-flash
+GEMINI_API_KEY=your-gemini-api-key
+
 # ── Product Identity ──────────────────────────────────────────
 DEFAULT_PRODUCT_ID=lysnrai

docker-compose.yml

@@ -172,6 +172,34 @@ services:
       timeout: 10s
       retries: 3
 
+  # ── Extraction Service (Fastify + TypeScript + Python sidecar) ──
+  extraction-service:
+    build:
+      context: .
+      dockerfile: services/extraction-service/Dockerfile
+    ports:
+      - '4005:4005'
+    env_file:
+      - .env
+    environment:
+      - PORT=4005
+      - PYTHON_SIDECAR_URL=http://localhost:4006
+    labels:
+      - 'traefik.enable=true'
+      - 'traefik.http.routers.extraction.rule=PathPrefix(`/api/extract`) || PathPrefix(`/api/tasks`)'
+      - 'traefik.http.services.extraction.loadbalancer.server.port=4005'
+    logging:
+      driver: loki
+      options:
+        loki-url: 'http://host.docker.internal:3100/loki/api/v1/push'
+        loki-retries: '3'
+    restart: unless-stopped
+    healthcheck:
+      test: ['CMD', 'wget', '--no-verbose', '--tries=1', '--spider', 'http://localhost:4005/health']
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
 # ── Volumes ───────────────────────────────────────────────────────
 volumes:
   loki-data: