feat(deploy): release compose under deploy/ with shared named volumes and rendered config mounts; drop root compose

docker-compose.yml

@@ -1,34 +0,0 @@
-services:
-  web:
-    build: { context: ., dockerfile: deploy/Dockerfile.web }
-    ports: ["8080:80"]
-    depends_on: [api]
-  api:
-    build: { context: ., dockerfile: deploy/Dockerfile.api }
-    environment:
-      DATABASE_URL: postgres://lib:lib@postgres:5432/lib?sslmode=disable
-      REDIS_URL: redis://redis:6379
-      JWT_SECRET: ${JWT_SECRET}
-      ADMIN_USER: ${ADMIN_USER}
-      ADMIN_PASSWORD: ${ADMIN_PASSWORD}
-      BOOKS_DIR: /data/books
-      CACHE_DIR: /data/cache
-      SCAN_INTERVAL_SEC: ${SCAN_INTERVAL_SEC:-60}
-    volumes:
-      - ./library:/data/books
-      - cache:/data/cache
-    depends_on:
-      postgres: { condition: service_healthy }
-      redis: { condition: service_started }
-  postgres:
-    image: postgres:16-alpine
-    environment: { POSTGRES_USER: lib, POSTGRES_PASSWORD: lib, POSTGRES_DB: lib }
-    volumes: [pgdata:/var/lib/postgresql/data]
-    healthcheck: { test: ["CMD-SHELL", "pg_isready -U lib"], interval: 2s, timeout: 2s, retries: 30 }
-  redis:
-    image: redis:7-alpine
-    command: ["redis-server", "--maxmemory", "128mb", "--maxmemory-policy", "allkeys-lru"]
-    # 故意无 volume:redis 里全是可再生数据(spec §6.2)
-volumes:
-  pgdata:
-  cache: