添加主体名称隐私保护功能，只显示首尾字符

certificate.html

@@ -537,6 +537,12 @@
       return phone.substring(0, 3) + '****' + phone.substring(7);
     }
     
+    // 隐藏主体名称中间部分，只显示第一个字和最后一个字
+    function hideSubjectName(name) {
+      if (!name || name.length <= 2) return name;
+      return name.charAt(0) + '*'.repeat(name.length - 2) + name.charAt(name.length - 1);
+    }
+    
     // 显示合格证信息
     function displayCertificate(certificate) {
       const container = document.getElementById('certificateInfo');
@@ -545,7 +551,7 @@
       html += `
         <div class="info-item">
           <span class="label">主体名称：</span>
-          <span class="value">${certificate.subjectName || ''}</span>
+          <span class="value">${hideSubjectName(certificate.subjectName) || ''}</span>
         </div>
         <div class="info-item">
           <span class="label">产品名称：</span>