chore: 整合部署文件与管理端源码入仓

- deploy/server.Dockerfile、deploy/client-h5.Dockerfile（自 ai-art 仓库迁出，去重）
- docker-compose.yml 迁入并修正路径（admin 上下文 ./admin），新增可选 h5 服务（profile 隔离）
- admin/：管理前端完整源码（Vite+Vue3，自 workspace/dimension-admin 合并）

admin/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "dimension-admin",
+  "private": true,
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "element-plus": "^2.14.5",
+    "vue": "^3.5.42"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "^5.2.1",
+    "vite": "^6.0.3"
+  }
+}