Add everything.

build.bat

@@ -0,0 +1,48 @@
+@echo off
+setlocal
+
+echo.
+echo ================================
+echo   Modularity - VS 2026 Build
+echo ================================
+echo.
+
+git submodule update --init --recursive
+
+:: Clean old build
+if exist build rmdir /s /q build
+
+echo [INFO] Creating fresh build directory...
+mkdir build
+cd build
+
+echo [INFO] Configuring with CMake (Visual Studio 18 2026)...
+cmake -G "Visual Studio 18 2026" -A x64 ..
+
+if errorlevel 1 (
+    echo.
+    echo [ERROR] CMake configuration failed!
+    pause
+    exit /b 1
+)
+
+echo [INFO] Building Release (using all CPU cores)...
+cmake --build . --config Release -- /m
+
+if errorlevel 1 (
+    echo.
+    echo [ERROR] Build failed!
+    pause
+    exit /b 1
+)
+
+echo [INFO] Copying Resources...
+xcopy /e /i /y "..\Resources" "Resources\" >nul
+
+echo.
+echo =========================================
+echo   SUCCESS! Your game is ready!
+echo   At build\Release\main.exe
+echo =========================================
+echo.
+pause