refactor(联系表单): 优化邮件发送逻辑和表单提交处理

- 合并表单提交和邮件发送逻辑，减少嵌套，提高代码可读性。
- 添加邮件内容模板，包含用户输入的信息和提交时间，提升邮件的可读性。

pages/contact.vue

                 <div class="text-white text-3xl font-medium mb-6">
                   {{ t("contact.title") }}
                 </div>
-                <form
-                  @submit="handleSubmit"
-                  class="flex flex-col gap-6"
-                >
+                <form @submit="handleSubmit" class="flex flex-col gap-6">
                   <div class="relative">
                     <input
                       v-model="form.name"
 async function handleSubmit(event: Event) {
   // 阻止表单默认提交行为，防止重复提交
   event.preventDefault();
-  
+
   if (isSubmitting.value) {
     return; // 如果已经在提交中，不重复处理
   }
-  
+
   isSubmitting.value = true;
   submitSuccess.value = false;
-  
+
   try {
     // 验证验证码
     const isCaptchaValid = captcha.validateCaptcha();
-    
+
     if (!isCaptchaValid) {
       isSubmitting.value = false;
       return;
     }
-    
+
     // 使用单独的异步函数发送邮件，减少嵌套
     await sendEmail();
-    
   } catch (error) {
     console.error("Error during form submission:", error);
     showFormStatus("error", t("contact.submitError"));
 async function sendEmail() {
   try {
     const result = await wrapAsync(async () => {
+      const message_template = `
+📨 来自Hanye官网的联系表单
+
+姓名：${form.value.name}
+邮箱：${form.value.email}
+
+消息内容：
+${form.value.message}
+
+提交时间：${new Date().toLocaleString()}
+来源页面：${window.location.href}
+
+---
+此邮件由Hanye官网的联系表单自动发送，请勿回复。
+      `;
+      const title = `您有一封来自Hanye官网的联系表单`;
+      const receiveEmail = "hanye@hanye.cn";
+
+      // 对包含HTML标签的参数进行URL编码
+      const encodedMessage = encodeURIComponent(message_template);
+      const encodedTitle = encodeURIComponent(title);
+
       // 发送邮件
       const response = await fetch(
-        `https://digital.sohomall.jp/prod-api/system/zsEmail/sendEmailWeb?receiveEmail=${form.value.email}&context=${form.value.message}&title=[Hanye Website]${form.value.name}`,
+        `https://digital.sohomall.jp/prod-api/system/zsEmail/sendEmailWeb?receiveEmail=${receiveEmail}&context=${encodedMessage}&title=${encodedTitle}`,
         {
           method: "GET",
           headers: {
           email: "",
           message: "",
         };
-        captcha.state.userInput = ''; // 清空验证码输入
+        captcha.state.userInput = ""; // 清空验证码输入
         captcha.generateCaptcha(); // 成功后刷新验证码
         submitSuccess.value = true;
         showFormStatus("success", t("contact.submitSuccess"));
         throw new Error("Failed to send email");
       }
     });
-    
+
     return result;
   } catch (error) {
     console.error("Error sending email:", error);