fix: Electron 构建顺序与 portable 自动更新问题

- 调整 build:electron 脚本顺序：先 vite build 生成 dist 产物，再编译网关，
  保证 webembed 嵌入的是最新前端资源
- 在 setupAutoUpdater() 中检测 PORTABLE_EXECUTABLE_DIR，portable 模式下
  跳过自动更新检查，避免 NSIS 不支持的更新流程误导用户

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: wynxing

web/electron/main.ts

@@ -363,6 +363,12 @@ function setupAutoUpdater(): void {
 		return
 	}
 
+	const isPortable = !!process.env.PORTABLE_EXECUTABLE_DIR
+	if (isPortable) {
+		console.log('[Updater] Skipped in portable mode')
+		return
+	}
+
 	autoUpdater.logger = console
 	autoUpdater.autoDownload = true
 	autoUpdater.autoInstallOnAppQuit = false

web/package.json

@@ -10,7 +10,7 @@
     "dev": "vite",
     "dev:electron": "node scripts/clean-electron.js && node scripts/build-gateway.js && vite --mode electron",
     "build": "tsc -b && vite build",
-    "build:electron": "node scripts/clean-electron.js && node scripts/build-gateway.js && vite build --mode electron && node scripts/verify-electron-preload.js && electron-builder --config electron-builder.config.cjs",
+    "build:electron": "node scripts/clean-electron.js && vite build --mode electron && node scripts/build-gateway.js && node scripts/verify-electron-preload.js && electron-builder --config electron-builder.config.cjs",
     "preview": "vite preview",
     "test": "vitest run",
     "test:ui": "vitest --ui",