refactor(components): 移除登录页面的注册状态获取功能

- 删除了用于获取注册状态的 isRegistrationEnabled 变量和相关 API 调用
- 移除了根据注册状态动态显示注册按钮的逻辑
- 简化了登录页面的结构，不再包含注册状态相关的代码

biji-qianduan/src/components/LoginPage.vue

@@ -23,7 +23,7 @@
         <el-form-item>
           <div class="button-group">
             <el-button type="primary" @click="handleLogin" class="login-button">安全登录</el-button>
-            <el-button v-if="isRegistrationEnabled" @click="goToRegister" class="register-button">立即注册</el-button>
+            <el-button @click="goToRegister" class="register-button">立即注册</el-button>
           </div>
         </el-form-item>
       </el-form>
@@ -38,14 +38,12 @@
 import { ref, onMounted } from 'vue';
 import { useRouter } from 'vue-router';
 import { useUserStore } from '../stores/user';
-import { getRegistrationStatus } from '../api/CommonApi';
 import { ElMessage } from 'element-plus';
 import { User, Lock } from '@element-plus/icons-vue';
 
 const router = useRouter();
 const userStore = useUserStore();
 const loginFormRef = ref(null);
-const isRegistrationEnabled = ref(true);
 
 const loginForm = ref({
   username: '',
@@ -78,16 +76,6 @@ const goToHome = () => {
   router.push('/home');
 };
 
-onMounted(async () => {
-  try {
-    const response = await getRegistrationStatus();
-    isRegistrationEnabled.value = response.data;
-  } catch (error) {
-    console.error("Failed to fetch registration status:", error);
-    // 保守起见，如果获取失败则禁用注册按钮
-    isRegistrationEnabled.value = false;
-  }
-});
 </script>
 
 <style scoped>