feat(07-02): Add CI/CD deployment scripts

- scripts/deploy.sh: Full deploy flow with fresh builds (--no-cache)
- scripts/build-check.sh: Pre-flight staleness check
- Docker labels for build tracking (git commit + timestamp)
- Prevents stale container bug from recurring

docker-compose.yml

@@ -4,6 +4,9 @@ services:
     build:
       context: ./backend
       dockerfile: Dockerfile
+      args:
+        GIT_COMMIT: ${GIT_COMMIT:-unknown}
+        BUILD_DATE: ${BUILD_DATE:-unknown}
     restart: unless-stopped
     environment:
       - DB_HOST=postgres
@@ -16,12 +19,18 @@ services:
       - homelab
     expose:
       - "3001"
+    labels:
+      - "org.opencontainers.image.revision=${GIT_COMMIT:-unknown}"
+      - "org.opencontainers.image.created=${BUILD_DATE:-unknown}"
 
   gravl-frontend:
     container_name: gravl-frontend
     build:
       context: ./frontend
       dockerfile: Dockerfile
+      args:
+        GIT_COMMIT: ${GIT_COMMIT:-unknown}
+        BUILD_DATE: ${BUILD_DATE:-unknown}
     restart: unless-stopped
     depends_on:
       - gravl-backend
@@ -37,6 +46,8 @@ services:
       - "traefik.http.routers.gravl-secure.tls=true"
       - "traefik.http.routers.gravl-secure.service=gravl"
       - "traefik.http.services.gravl.loadbalancer.server.port=80"
+      - "org.opencontainers.image.revision=${GIT_COMMIT:-unknown}"
+      - "org.opencontainers.image.created=${BUILD_DATE:-unknown}"
 
 networks:
   proxy: