Added new demonic pacts images and theme.

run-frontend.bat

@@ -0,0 +1,28 @@
+@echo off
+REM Run the os-league-tools React frontend development server
+
+echo Starting OS League Tools Frontend...
+echo.
+
+REM Change to the frontend directory
+cd /d "%~dp0os-league-tools-master"
+
+REM Check if node_modules exists
+if not exist "node_modules" (
+    echo node_modules not found. Running npm install...
+    npm install
+    if errorlevel 1 (
+        echo npm install failed!
+        pause
+        exit /b 1
+    )
+)
+
+echo Starting development server on http://localhost:3000
+echo Press Ctrl+C to stop the server
+echo.
+
+REM Run the development server
+npm run dev
+
+pause