fix(service-party-app): 使用 afterPack hook 确保 TSS 二进制文件被正确打包

问题：
- extraResources 的 ${platform}-${arch} 宏在 from 路径中可能不可靠
- 参考: https://github.com/electron-userland/electron-builder/issues/7891

解决：
- 创建 afterPack.js hook 手动复制对应平台/架构的二进制文件
- 移除 extraResources 配置，改用 hook 方式
- 确保 tss-party 二进制文件被正确复制到 resources/bin/ 目录

Generated with Claude Code

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/mpc-system/services/service-party-app/electron-builder.json

@@ -11,13 +11,7 @@
     "dist/**/*",
     "dist-electron/**/*"
   ],
-  "extraResources": [
-    {
-      "from": "bin/${platform}-${arch}",
-      "to": "bin",
-      "filter": ["**/*"]
-    }
-  ],
+  "afterPack": "./scripts/afterPack.js",
   "extraMetadata": {
     "main": "dist-electron/main.js"
   },

backend/mpc-system/services/service-party-app/scripts/afterPack.js

@@ -0,0 +1,75 @@
+const fs = require('fs');
+const path = require('path');
+
+/**
+ * afterPack hook - 在打包后复制 TSS 二进制文件到正确位置
+ *
+ * 由于 electron-builder 的 extraResources 的 ${platform}/${arch} 宏
+ * 在 from 路径中可能不稳定，使用 afterPack hook 确保可靠复制
+ *
+ * 参考: https://github.com/electron-userland/electron-builder/issues/7891
+ */
+exports.default = async function afterPack(context) {
+  const { appOutDir, packager } = context;
+  const platform = packager.platform.name; // 'mac', 'linux', 'windows'
+  const arch = context.arch; // 1 = x64, 3 = arm64, etc.
+
+  // 映射 arch 数字到字符串
+  const archMap = {
+    1: 'x64',
+    3: 'arm64',
+    0: 'ia32',
+  };
+  const archStr = archMap[arch] || 'x64';
+
+  // 映射 platform 到 Node.js process.platform 风格
+  const platformMap = {
+    'windows': 'win32',
+    'mac': 'darwin',
+    'linux': 'linux',
+  };
+  const platformStr = platformMap[platform] || platform;
+
+  console.log(`[afterPack] Platform: ${platform} (${platformStr}), Arch: ${arch} (${archStr})`);
+
+  // 源目录和目标目录
+  const sourceDir = path.join(__dirname, '..', 'bin', `${platformStr}-${archStr}`);
+  const targetDir = path.join(appOutDir, 'resources', 'bin');
+
+  console.log(`[afterPack] Source: ${sourceDir}`);
+  console.log(`[afterPack] Target: ${targetDir}`);
+
+  // 检查源目录是否存在
+  if (!fs.existsSync(sourceDir)) {
+    console.warn(`[afterPack] Source directory not found: ${sourceDir}`);
+    console.warn(`[afterPack] Skipping binary copy for ${platformStr}-${archStr}`);
+    return;
+  }
+
+  // 创建目标目录
+  if (!fs.existsSync(targetDir)) {
+    fs.mkdirSync(targetDir, { recursive: true });
+    console.log(`[afterPack] Created target directory: ${targetDir}`);
+  }
+
+  // 复制所有文件
+  const files = fs.readdirSync(sourceDir);
+  for (const file of files) {
+    const sourcePath = path.join(sourceDir, file);
+    const targetPath = path.join(targetDir, file);
+
+    // 获取文件信息
+    const stat = fs.statSync(sourcePath);
+    if (stat.isFile()) {
+      fs.copyFileSync(sourcePath, targetPath);
+      console.log(`[afterPack] Copied: ${file} (${(stat.size / 1024 / 1024).toFixed(2)} MB)`);
+
+      // 在 Unix 系统上设置可执行权限
+      if (platformStr !== 'win32') {
+        fs.chmodSync(targetPath, 0o755);
+      }
+    }
+  }
+
+  console.log(`[afterPack] Binary copy completed for ${platformStr}-${archStr}`);
+};