feat: implement user registration API and connect to UI

pages/index.vue

@@ -118,7 +118,15 @@ async function handleLogin() {
 }
 
 async function handleRegister() {
-  // TODO: Implement register logic
-  console.log('Registering with data:', registerForm);
+  try {
+    const response = await $fetch('/api/register', {
+      method: 'POST',
+      body: registerForm
+    });
+    message.value = response.message;
+    showLogin();
+  } catch (error: any) {
+    message.value = error.data?.message || '注册失败';
+  }
 }
 </script> 

server/api/register.post.ts

@@ -0,0 +1,21 @@
+import { defineEventHandler, readBody, setResponseStatus } from 'h3';
+
+export default defineEventHandler(async (event) => {
+  const body = await readBody(event);
+
+  const { name, gender, contact, idCard, password } = body;
+
+  if (!name || !gender || !contact || !idCard || !password) {
+    setResponseStatus(event, 400);
+    return {
+      message: '请填写完整信息',
+    };
+  }
+
+  // TODO: Add database logic to save the user
+  console.log('Registering new user:', { name, gender, contact, idCard });
+
+  return {
+    message: '注册成功！',
+  };
+});