refactor: 统一表命名规范，简化 DB 单例

- 去掉所有 Drizzle 表变量的 Table 后缀（userTable→user 等）
- 修复 Better Auth adapter 找不到 schema model 的问题
- DB 实例从 IIFE 闭包工厂简化为模块级导出
- db middleware 重命名为 dbMiddleware 避免与 db 实例冲突
- 添加 babel-plugin-react-compiler 依赖

bun.lock

@@ -46,6 +46,7 @@
         "@tanstack/react-router-devtools": "catalog:",
         "@types/bun": "catalog:",
         "@vitejs/plugin-react": "catalog:",
+        "babel-plugin-react-compiler": "^1.0.0",
         "drizzle-kit": "catalog:",
         "nitro": "catalog:",
         "tailwindcss": "catalog:",
@@ -537,6 +538,8 @@
 
     "babel-dead-code-elimination": ["babel-dead-code-elimination@1.0.12", "", { "dependencies": { "@babel/core": "^7.23.7", "@babel/parser": "^7.23.6", "@babel/traverse": "^7.23.7", "@babel/types": "^7.23.6" } }, "sha512-GERT7L2TiYcYDtYk1IpD+ASAYXjKbLTDPhBtYj7X1NuRMDTMtAx9kyBenub1Ev41lo91OHCKdmP+egTDmfQ7Ig=="],
 
+    "babel-plugin-react-compiler": ["babel-plugin-react-compiler@1.0.0", "", { "dependencies": { "@babel/types": "^7.26.0" } }, "sha512-Ixm8tFfoKKIPYdCCKYTsqv+Fd4IJ0DQqMyEimo+pxUOMUR9cVPlwTrFt9Avu+3cb6Zp3mAzl+t1MrG2fxxKsxw=="],
+
     "base64-js": ["base64-js@1.5.1", "", {}, "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="],
 
     "baseline-browser-mapping": ["baseline-browser-mapping@2.10.12", "", { "bin": { "baseline-browser-mapping": "dist/cli.cjs" } }, "sha512-qyq26DxfY4awP2gIRXhhLWfwzwI+N5Nxk6iQi8EFizIaWIjqicQTE4sLnZZVdeKPRcVNoJOkkpfzoIYuvCKaIQ=="],