明确证书密钥用途

frontend/src/views/Dashboard/Dashboard.js

@@ -850,7 +850,7 @@ export function useDashboard() {
     importError.value = "";
     importResult.value = null;
     if (!importFiles.value.certificate || !importFiles.value.private_key) {
-      importError.value = "请选择证书文件和私钥文件";
+      importError.value = "请选择证书文件和证书密钥文件";
       return;
     }
     const maxSize = 20 * 1024 * 1024;

frontend/src/views/Dashboard/Dashboard.vue

@@ -460,7 +460,7 @@ const { activeSection, activeLabel, sections, selectSection } = useDashboardNavi
             <input type="file" accept=".pem,.crt,.cer,.txt" required @change="selectCertificateImportFile('certificate', $event)" />
           </label>
           <label class="field">
-            <span>私钥文件 <small>必选，内容只上传到服务端并按安全流程处理</small></span>
+            <span>证书密钥文件 <small>必选，仅用于 HTTPS 证书部署</small></span>
             <input type="file" accept=".pem,.key,.txt" required @change="selectCertificateImportFile('private_key', $event)" />
           </label>
           <label class="field">