fix(GOV-012): 拒绝 MariaDB 伪装版本

tools/database/mysql2-schema-exporter.mjs

@@ -62,7 +62,8 @@ export function quoteIdentifier(identifier) {
  * `SHOW CREATE` 文本在不兼容语义下被误认为可恢复的 Schema 快照。
  */
 export function assertMysql57ServerMetadata(metadata) {
-  if (!/^5\.7\.\d+(?:[-+].*)?$/.test(metadata?.serverVersion ?? '')) {
+  const serverVersion = metadata?.serverVersion ?? '';
+  if (!/^5\.7\.\d+(?:[-+].*)?$/.test(serverVersion) || /mariadb/i.test(serverVersion)) {
     throw new SchemaExportError('UNSUPPORTED_SERVER_VERSION', 'MySQL 服务端必须为 5.7.x');
   }
   if (metadata.databaseCharset !== 'utf8mb4') {

tools/database/mysql2-schema-exporter.test.mjs

@@ -48,7 +48,12 @@ test('只接受 MySQL 5.7.x 与固定字符规则', () => {
     databaseCollation: 'utf8mb4_general_ci',
   };
   assert.doesNotThrow(() => assertMysql57ServerMetadata(valid));
-  for (const serverVersion of ['5.6.51', '8.0.40', '10.6.18-MariaDB']) {
+  for (const serverVersion of [
+    '5.6.51',
+    '8.0.40',
+    '5.7.42-MariaDB',
+    '10.6.18-MariaDB',
+  ]) {
     assert.throws(() => assertMysql57ServerMetadata({ ...valid, serverVersion }));
   }
 });