Prefer QQAppId/ marker when parsing AppID

Add parseAppidFromMajorV2 to napcat-common to scan a Major file for the "QQAppId/" marker and extract a null-terminated numeric AppID. Update qq-basic-info to import and prefer this new parser (falling back to the existing parseAppidFromMajor). Also correct the getMajorPath argument order when obtaining the major file path. This enables detection of AppID from a newer Major format while preserving legacy fallback behavior.

packages/napcat-common/src/helper.ts

@@ -184,6 +184,35 @@ export function stringifyWithBigInt (obj: any) {
   );
 }
 
+export function parseAppidFromMajorV2 (nodeMajor: string): string | undefined {
+  const marker = Buffer.from('QQAppId/', 'utf-8');
+  const filePath = path.resolve(nodeMajor);
+  const fileContent = fs.readFileSync(filePath);
+
+  let searchPosition = 0;
+  while (true) {
+    const index = fileContent.indexOf(marker, searchPosition);
+    if (index === -1) {
+      break;
+    }
+
+    const start = index + marker.length;
+    const end = fileContent.indexOf(0x00, start);
+    if (end === -1) {
+      break;
+    }
+    const content = fileContent.subarray(start, end);
+    const str = content.toString('utf-8');
+    if (/^\d+$/.test(str)) {
+      return str;
+    }
+
+    searchPosition = end + 1;
+  }
+
+  return undefined;
+}
+
 export function parseAppidFromMajor (nodeMajor: string): string | undefined {
   const hexSequence = 'A4 09 00 00 00 35';
   const sequenceBytes = Buffer.from(hexSequence.replace(/ /g, ''), 'hex');

packages/napcat-core/helper/qq-basic-info.ts

@@ -1,6 +1,6 @@
 import fs from 'node:fs';
 import { systemPlatform } from 'napcat-common/src/system';
-import { getDefaultQQVersionConfigInfo, getQQPackageInfoPath, getQQVersionConfigPath, parseAppidFromMajor } from 'napcat-common/src/helper';
+import { getDefaultQQVersionConfigInfo, getQQPackageInfoPath, getQQVersionConfigPath, parseAppidFromMajor, parseAppidFromMajorV2 } from 'napcat-common/src/helper';
 import AppidTable from '@/napcat-core/external/appid.json';
 import { LogWrapper } from './log';
 import { getMajorPath } from '@/napcat-core/index';
@@ -107,7 +107,13 @@ export class QQBasicInfoWrapper {
     if (!this.QQMainPath) {
       throw new Error('QQMainPath未定义 无法通过Major获取Appid');
     }
-    const majorPath = getMajorPath(QQVersion, this.QQMainPath);
+    const majorPath = getMajorPath(this.QQMainPath, QQVersion);
+    // 优先通过 QQAppId/ 标记搜索
+    const appidV2 = parseAppidFromMajorV2(majorPath);
+    if (appidV2) {
+      return appidV2;
+    }
+    // 回落到旧方式
     const appid = parseAppidFromMajor(majorPath);
     return appid;
   }