fix(storage): 修复存储目标编辑不显示配置 & 添加文件列表API

- fix(storage): StorageOut 增加 config 字段并解密返回，编辑时可回填
- fix(storage): Storage ORM 模型添加 config property 支持序列化
- fix(env): 修正 SECRET_KEY 截断、FERNET_KEY 非法占位符问题
- fix(deploy): 后端从 Docker 容器迁移到 systemd 服务，存储目标路径改为宿主机真实路径
- feat(api): 新增 GET /api/storages/{id}/files 文件浏览端点
- feat(frontend): 新增 listFiles API 调用
- docs: 更新 README 反映部署方式变更

docker-compose.yml

@@ -1,32 +1,4 @@
-version: "3.9"
-
 services:
-  backend:
-    build:
-      context: ./backend
-      dockerfile: Dockerfile
-    image: backup-system/backend:latest
-    container_name: backup-backend
-    env_file:
-      - .env
-    environment:
-      # 容器内默认存储根目录
-      STORAGE_LOCAL_ROOT: /app/data/backups
-      DATABASE_URL: sqlite:////app/data/backup.db
-    volumes:
-      # bind mounts: 数据直接落到项目目录下
-      - ./data/backend:/app/data
-      - ./data/logs:/app/logs
-    ports:
-      - "8765:8000"
-    restart: unless-stopped
-    healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:8000/api/health"]
-      interval: 30s
-      timeout: 5s
-      retries: 5
-      start_period: 20s
-
   frontend:
     build:
       context: ./frontend
@@ -35,7 +7,4 @@ services:
     container_name: backup-frontend
     ports:
       - "5173:80"
-    depends_on:
-      backend:
-        condition: service_healthy
     restart: unless-stopped