refactor: 移除java项目，改用hono + vercel function实现后端 (#1)

Co-authored-by: gin <gin-18@qq.com>
Co-authored-by: gin <dengxinmin@owlscm.com>
Reviewed-on: #1

frontend/web/index.html

@@ -8,7 +8,7 @@
       name="viewport"
       content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=0"
     />
-    <title>Agileboot管理系统</title>
+    <title>CollabLedger管理系统</title>
     <link rel="icon" href="/favicon.ico" />
     <script>
       window.process = {};