feat(frontend): add Helm chart browser, monitoring, chart-references and values templates pages

Add new frontend pages for the multi-tenant OCDP platform:

- Charts page (/charts): Browse Harbor OCI registries to list Helm chart repositories
  and versions, with deploy modal to launch charts on selected clusters
- Monitoring page (/monitoring): Display cluster metrics (CPU/Memory/GPU usage)
  and per-node details with resource utilization bars
- Chart References page (/chart-references): CRUD for chart metadata references
- Values Templates page (/templates): CRUD for Helm values templates with version
  history and rollback support
- Sidebar: Add Charts navigation, update Storage and Templates links
- api.ts: Add all API client functions (clusterApi, registryApi, instanceApi,
  monitoringApi, storageApi, chartReferenceApi, valuesTemplateApi,
  workspaceApi, userApi) with full TypeScript types

Note: deploy flow and values template rollback not yet end-to-end tested.

docker-compose.yml

@@ -10,43 +10,35 @@
 #   - 本文件只负责前端构建和 Nginx。
 #   - Backend / PostgreSQL / pgAdmin 由 backend/docker-compose.yml 提供。
 #   - Nginx 统一监听 80/443（默认映射 WEB_HTTP_PORT=80、WEB_HTTPS_PORT=443），
-#     根据路径转发：/api/* → backend，其他路径 → 前端静态文件。
+#     根据路径转发：/api/* → backend，其他路径 → 前端服务。
 # ==================================================
 
 services:
   # --------------------------------------------------
-  # 构建前端静态资源 (一次性 Job)
+  # Next.js 前端服务
   # --------------------------------------------------
-  frontend-build:
+  frontend:
     image: node:20-alpine
-    container_name: ocdp-frontend-build
+    container_name: ocdp-frontend
     init: true
     working_dir: /app
-    restart: "no"
+    restart: unless-stopped
     environment:
       NODE_ENV: production
-      NPM_CONFIG_PRODUCTION: "false"  # ensure devDependencies (tsc, vite) are installed for build
-      # 默认通过 Nginx 代理到 backend -> /api/v1
-      VITE_API_BASE_URL: ${VITE_API_BASE_URL:-/api/v1}
-      FILE_OWNER_UID: ${FILE_OWNER_UID:-1000}
-      FILE_OWNER_GID: ${FILE_OWNER_GID:-1000}
-    command: >
-      sh -c "
-        set -eux;
-        npm ci;
-        npm run build;
-        mkdir -p /build;
-        rm -rf /build/*;
-        cp -R dist/. /build/;
-        if [ -d dist ]; then chown -R "$$FILE_OWNER_UID:$$FILE_OWNER_GID" dist; fi;
-        if [ -d /build ]; then chown -R "$$FILE_OWNER_UID:$$FILE_OWNER_GID" /build; fi
-      "
+      NEXT_PUBLIC_API_URL: ${NEXT_PUBLIC_API_URL:-/api/v1}
+    command: sh -c "npm install --include=dev && npm run build && npm run start"
+    expose:
+      - "3000"
     volumes:
       - ./frontend:/app
       - frontend_node_modules:/app/node_modules
-      - frontend_dist:/build
     networks:
       - ocdp-network
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:3000 || exit 1"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
 
   # --------------------------------------------------
   # Nginx - 静态文件 + /api 反向代理统一入口
@@ -55,13 +47,12 @@ services:
     image: nginx:1.27-alpine
     container_name: ocdp-nginx
     depends_on:
-      frontend-build:
-        condition: service_completed_successfully
+      frontend:
+        condition: service_started
     ports:
       - "${WEB_HTTP_PORT:-80}:80"
       - "${WEB_HTTPS_PORT:-443}:443"
     volumes:
-      - frontend_dist:/usr/share/nginx/html:ro
       - ./infra/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
       - ./infra/nginx/certs:/etc/nginx/certs:ro
     healthcheck:
@@ -84,7 +75,5 @@ networks:
 # Volumes
 # ==================================================
 volumes:
-  frontend_dist:
-    driver: local
   frontend_node_modules:
     driver: local