refactor(auth): 移除注册页面的邮箱字段

简化注册表单，移除不再使用的邮箱字段及其相关逻辑

@@ -26,20 +26,6 @@
           </div>
 
           <div>
-            <label for="email" class="block text-sm font-medium text-gray-700">
-              邮箱 <span class="text-red-500">*</span>
-            </label>
-            <input
-              id="email"
-              v-model="formData.email"
-              type="email"
-              autocomplete="email"
-              required
-              class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-green-500 focus:border-green-500"
-            />
-          </div>
-
-          <div>
             <label for="phone" class="block text-sm font-medium text-gray-700">
               手机号
             </label>
@@ -170,7 +156,6 @@ import { useAuth } from '@/contexts/auth'
 import { useTitle } from '@vueuse/core';
 
 const $route = useRoute();
-const $router = useRouter();
 useTitle($route.meta.title);
 
 const router = useRouter()
@@ -178,7 +163,6 @@ const { login } = useAuth()
 
 const formData = reactive({
   name: '',
-  email: '',
   phone: '',
   password: '',
   confirmPassword: '',
@@ -205,7 +189,7 @@ const openPrivacy = () => {
 }
 
 const handleSubmit = async () => {
-  if (!formData.name || !formData.email || !formData.password) {
+  if (!formData.name || !formData.password) {
     error.value = '请填写所有必填字段'
     return
   }
@@ -226,7 +210,6 @@ const handleSubmit = async () => {
 
     // 使用auth.js中的login函数
     const success = login({
-      email: formData.email,
       name: formData.name,
       avatar: 'https://cdn.ipadbiz.cn/mlaj/images/user-avatar-3.jpg'
     })