chore(web): 将项目切换到ESM模块系统

将项目从CommonJS切换到ESM模块系统，更新了`dev:server`和`db:init`脚本以使用`node --import tsx/esm`模式，并在`package.json`中添加了`"type": "module"`配置。

web/package.json

@@ -4,10 +4,10 @@
   "private": true,
   "scripts": {
     "dev": "concurrently \"npm run dev:server\" \"npm run dev:client\"",
-    "dev:server": "npx kill-port 3007 && tsx watch server/index.ts",
+    "dev:server": "npx kill-port 3007 && node --import tsx/esm --watch server/index.ts",
     "dev:client": "cd client && npm run dev",
     "build": "cd client && npm run build",
-    "db:init": "tsx server/db/schema.ts",
+    "db:init": "node --import tsx/esm server/db/schema.ts",
     "setup": "npm install && cd client && npm install"
   },
   "dependencies": {
@@ -31,5 +31,6 @@
     "kill-port": "^2.0.1",
     "tsx": "^4.19.0",
     "typescript": "^5.6.0"
-  }
+  },
+  "type": "module"
 }