fix(admin-service): 修复 APK 解析失败 — 写入临时文件后再解析

adbkit-apkreader v3 底层使用 yauzl.open()，只接受文件路径，
传入 Buffer 会被当成文件路径字符串导致 ENOENT。
改为先将 Buffer 写入 os.tmpdir() 临时文件，解析完成后在 finally 中删除。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/services/admin-service/src/infrastructure/parsers/package-parser.service.ts

@@ -1,3 +1,6 @@
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
 import { Injectable, Logger, BadRequestException } from '@nestjs/common';
 import { IPackageParser, ParsedPackageInfo } from '../../domain/ports/package-parser.interface';
 
@@ -13,10 +16,13 @@ export class PackageParserService implements IPackageParser {
   }
 
   private async parseApk(buffer: Buffer): Promise<ParsedPackageInfo> {
+    // adbkit-apkreader v3 底层用 yauzl.open()，只接受文件路径而非 Buffer
+    // 先写入临时文件，解析后删除
+    const tmpFile = path.join(os.tmpdir(), `apk-parse-${Date.now()}.apk`);
     try {
-      // Dynamic import to handle missing dependency gracefully
+      fs.writeFileSync(tmpFile, buffer);
       const ApkReader = await import('adbkit-apkreader').then(m => m.default || m);
-      const reader = await ApkReader.open(buffer);
+      const reader = await ApkReader.open(tmpFile);
       const manifest = await reader.readManifest();
       return {
         packageName: manifest.package || 'unknown',
@@ -33,6 +39,8 @@ export class PackageParserService implements IPackageParser {
         versionName: '0.0.0',
         platform: 'ANDROID',
       };
+    } finally {
+      try { fs.unlinkSync(tmpFile); } catch { /* ignore */ }
     }
   }