feat: 实现减脂体重管理App完整功能

- 实现拍照识别食物功能（集成大语言模型视觉能力）
- 实现智能对话功能（集成大语言模型流式输出）
- 实现食物记录和卡路里管理功能
- 实现体重记录和统计功能
- 实现健康数据管理页面
- 配置数据库表结构（用户、食物记录、体重记录）
- 实现Express后端API路由
- 配置Tab导航和前端页面
- 采用健康运动配色方案

server/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "server",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "preinstall": "npx only-allow pnpm",
+    "dev": "bash ../.cozeproj/scripts/server_dev_run.sh",
+    "build": "node build.js",
+    "start": "NODE_ENV=production PORT=${PORT:-5000} node dist/index.js"
+  },
+  "dependencies": {
+    "express": "^4.22.1",
+    "cors": "^2.8.5",
+    "coze-coding-dev-sdk": "^0.7.2",
+    "dayjs": "^1.11.19",
+    "drizzle-orm": "^0.45.1",
+    "drizzle-zod": "^0.8.3",
+    "multer": "^2.0.2",
+    "pg": "^8.16.3",
+    "zod": "^4.2.1"
+  },
+  "devDependencies": {
+    "@types/cors": "^2.8.19",
+    "@types/express": "^5.0.6",
+    "tsx": "^4.21.0",
+    "@types/multer": "^2.0.0",
+    "@types/pg": "^8.16.0",
+    "esbuild": "0.27.2",
+    "typescript": "^5.8.3",
+    "drizzle-kit": "^0.31.8"
+  }
+}