- 背景与问题 ：以前没有支持官方工具mysqlworkbench的xml导入，现在支持了

- 变更点：新增mysqlworkbench的xml文件导入，并当没有密码时，提示用户，而不是直接使用空密码进行直接连接，更友好
  - 影响范围：仅导入受到影响
  - 验证方式：点击导入，用mysqlworkbench的xml进行导入即可

frontend/src/utils/connectionExport.ts

@@ -1,6 +1,6 @@
 import type { ConnectionConfig, SavedConnection } from '../types';
 
-export type ConnectionImportKind = 'app-managed-package' | 'encrypted-package' | 'legacy-json' | 'invalid';
+export type ConnectionImportKind = 'app-managed-package' | 'encrypted-package' | 'legacy-json' | 'mysql-workbench-xml' | 'invalid';
 export type ConnectionPackageDialogSnapshot = {
   open: boolean;
   mode: 'export' | 'import';
@@ -105,7 +105,15 @@ const parseConnectionImportRaw = (raw: unknown): unknown => {
   }
 };
 
+const isMySQLWorkbenchXML = (raw: string): boolean => (
+  raw.includes('<data') && raw.includes('grt_format') && raw.includes('db.mgmt.Connection')
+);
+
 export const detectConnectionImportKind = (raw: unknown): ConnectionImportKind => {
+  if (typeof raw === 'string' && isMySQLWorkbenchXML(raw)) {
+    return 'mysql-workbench-xml';
+  }
+
   const parsed = parseConnectionImportRaw(raw);
 
   if (isConnectionPackageV2AppManagedEnvelope(parsed)) {

frontend/src/utils/connectionModalPresentation.test.ts

@@ -25,7 +25,7 @@ describe('connectionModalPresentation', () => {
 
   it('maps missing saved-connection errors to a secret-specific hint', () => {
     expect(normalizeConnectionSecretErrorMessage('saved connection not found: conn-1')).toBe(
-      '未找到当前连接对应的已保存密文，请重新填写密码并保存后再试',
+      '未找到当前连接对应的已保存密文，请编辑当前连接，并输入密码后保存',
     );
   });
 
@@ -39,7 +39,7 @@ describe('connectionModalPresentation', () => {
       reason: 'saved connection not found: conn-1',
       fallback: '连接失败',
     })).toEqual({
-      message: '测试失败: 未找到当前连接对应的已保存密文，请重新填写密码并保存后再试',
+      message: '测试失败: 未找到当前连接对应的已保存密文，请编辑当前连接，并输入密码后保存',
       shouldToast: true,
     });
   });

frontend/src/utils/connectionModalPresentation.ts

@@ -41,7 +41,7 @@ export const normalizeConnectionSecretErrorMessage = (
   const lower = text.toLowerCase();
 
   if (lower.includes('saved connection not found:')) {
-    return '未找到当前连接对应的已保存密文，请重新填写密码并保存后再试';
+    return '未找到当前连接对应的已保存密文，请编辑当前连接，并输入密码后保存';
   }
   if (lower.includes('secret store unavailable')) {
     return '系统密文存储当前不可用，请检查系统钥匙串或凭据管理器后再试';