build: 运行时只装一次，避免覆盖只读文件被拒

deploy/build.bat

@@ -39,12 +39,12 @@ cd ..
 
 echo === [5/5] assemble portable console ===
 REM Old build may still be running; .pak files from the electron zip are read-only,
-REM so full directory removal is fragile. Overwrite in place instead: only wipe our
-REM own resources\app, let the runtime files be overwritten.
+REM so full directory removal is fragile. Overwrite in place instead: the runtime is
+REM installed once, and only our own resources\app is wiped on every build.
 taskkill /im "Scoreboard Console.exe" /f >nul 2>&1
 taskkill /im scoreboard.exe /f >nul 2>&1
 if not exist "%CONSOLE_OUT%" mkdir "%CONSOLE_OUT%" || exit /b 1
-xcopy /e /i /y "console\node_modules\electron\dist" "%CONSOLE_OUT%" >nul || exit /b 1
+if not exist "%CONSOLE_OUT%\Scoreboard Console.exe" call :install_runtime || exit /b 1
 if exist "%CONSOLE_OUT%\resources\app" rmdir /s /q "%CONSOLE_OUT%\resources\app"
 mkdir "%CONSOLE_OUT%\resources\app" 2>nul
 xcopy /e /i /y "console\main" "%CONSOLE_OUT%\resources\app\main" >nul || exit /b 1
@@ -54,7 +54,6 @@ REM config.json must sit next to the exe: the console resolves it from the exe d
 copy /y "console\config.json" "%CONSOLE_OUT%\config.json" >nul || exit /b 1
 copy /y "dist\scoreboard.exe" "%CONSOLE_OUT%\scoreboard.exe" >nul || exit /b 1
 copy /y "config.yaml" "%CONSOLE_OUT%\config.yaml" >nul || exit /b 1
-if exist "%CONSOLE_OUT%\electron.exe" ren "%CONSOLE_OUT%\electron.exe" "Scoreboard Console.exe"
 
 echo.
 echo === 构建完成 ===
@@ -77,3 +76,9 @@ del /q electron-dl.zip
 echo electron.exe> node_modules\electron\path.txt
 echo   electron binary placed
 exit /b 0
+
+REM ---- install electron runtime once -------------------------------------------
+:install_runtime
+xcopy /e /i /y /r "console\node_modules\electron\dist" "%CONSOLE_OUT%" >nul || exit /b 1
+if exist "%CONSOLE_OUT%\electron.exe" ren "%CONSOLE_OUT%\electron.exe" "Scoreboard Console.exe"
+exit /b 0