feat(co-gahusb): docker-compose 서비스 등재 (18920, depends_on redis)

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

docker-compose.yml

@@ -221,6 +221,25 @@ services:
       timeout: 5s
       retries: 3
 
+  co-gahusb:
+    build:
+      context: ./co-gahusb
+    container_name: co-gahusb
+    restart: unless-stopped
+    ports:
+      - "18920:8000"
+    environment:
+      - TZ=${TZ:-Asia/Seoul}
+      - REDIS_URL=${REDIS_URL:-redis://redis:6379}
+      - CO_BUS_KEY=${CO_BUS_KEY:-}
+    depends_on:
+      - redis
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"]
+      interval: 60s
+      timeout: 5s
+      retries: 3
+
   agent-office:
     build:
       context: ./agent-office