chore: configure eslint and update gitignore

install.bat

@@ -0,0 +1,38 @@
+@echo off
+echo ==========================================
+echo    2FA ACCOUNT TOOL - Setup Utility
+echo ==========================================
+echo.
+
+:: Check for Node.js
+node -v >nul 2>&1
+if %errorlevel% neq 0 (
+    echo [ERROR] Node.js is not installed!
+    echo Please download and install Node.js from https://nodejs.org/
+    pause
+    exit /b
+)
+
+echo [1/2] Cleaning up old installation files...
+if exist node_modules (
+    rd /s /q node_modules
+)
+
+echo [2/2] Installing dependencies (npm install)...
+call npm install
+
+if %errorlevel% neq 0 (
+    echo.
+    echo [ERROR] Dependency installation failed.
+    echo Please check your internet connection.
+    pause
+    exit /b
+)
+
+echo.
+echo ==========================================
+echo    SETUP SUCCESSFUL!
+echo    You can now run 'start.vbs' to launch.
+echo ==========================================
+echo.
+pause