feat(mpuniapp): 优化预约抽屉多行文本体验并新增名片/需求照片可选上传

mpuniapp/pages/portal/index.uvue

@@ -753,7 +753,7 @@ async function submitAppointmentForm(): Promise<void> {
   try {
     const isEmail = contact.includes('@');
     const photoNotes = appointmentForm.photos.length > 0
-      ? `\n附带资料照片: ${appointmentForm.photos.join(' , ')}`
+      ? `\n[附件照片 ${appointmentForm.photos.join(' ')}]`
       : '';
     const fullNotes = `[商务预约] 期望形式: ${appointmentForm.preferredTime || '未指定'}${appointmentForm.notes.trim() ? `\n需求与议题: ${appointmentForm.notes.trim()}` : ''}${photoNotes}`;