fix(substore): refresh stale common utilities

substore/alphaair-rename.js

@@ -6,10 +6,13 @@
  * - 不追加订阅后缀，整合订阅最后仍交给 rename.js 处理
  */
 // noinspection JSUnusedGlobalSymbols
-const COMMON_SCRIPT_URL = 'https://git.orionc.me/orion/script/raw/branch/main/substore/common.js?v=20260603-4';
+const COMMON_SCRIPT_URL = 'https://git.orionc.me/orion/script/raw/branch/main/substore/common.js?v=20260603-5';
+const hasCurrentRenameUtils = utils => Boolean(
+    utils && typeof utils.normalizeLeadingMojibakeFlag === 'function'
+);
 
 async function loadRenameUtils() {
-    if (typeof globalThis !== 'undefined' && globalThis.SubStoreRenameUtils) {
+    if (typeof globalThis !== 'undefined' && hasCurrentRenameUtils(globalThis.SubStoreRenameUtils)) {
         return globalThis.SubStoreRenameUtils;
     }
 
@@ -22,6 +25,9 @@ async function loadRenameUtils() {
     }
 
     new Function(String(script))();
+    if (!hasCurrentRenameUtils(globalThis.SubStoreRenameUtils)) {
+        throw new Error('Loaded common.js is missing current rename utilities');
+    }
     return globalThis.SubStoreRenameUtils;
 }