feat: 实现微信小程序后端接口与用户认证系统

新增微信登录/注册合一接口、资料完善接口和token刷新接口
重构用户服务层，支持自动维护用户类型和资料完整度
引入JWT认证中间件和请求验证中间件
更新文档与测试用例，支持dist构建部署

script/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "script",
+  "version": "1.0.0",
+  "description": "",
+  "main": "pocketbase.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "module",
+  "dependencies": {
+    "pocketbase": "^0.26.8"
+  }
+}