Add project files.

build-wix.bat

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+@echo off
+setlocal EnableDelayedExpansion
+
+echo ================================================
+echo  BoxPacker3D – Build MSI Installer (WiX v5)
+echo ================================================
+echo.
+
+REM ── 1. Check / install WiX v5 dotnet tool ────────────────────────────────
+where wix.exe >nul 2>&1
+if errorlevel 1 (
+    echo [1/5] Instalaacia WiX v5 ako dotnet tool...
+    dotnet tool install --global wix --version "5.*"
+    if errorlevel 1 (
+        echo CHYBA: Nepodarilo sa nainštalovat WiX. Uistite sa, ze je nainštalovany .NET SDK.
+        pause & exit /b 1
+    )
+    echo.
+) else (
+    echo [1/5] WiX je nainštalovany. OK
+)
+
+REM ── 2. Ensure required WiX extensions are installed ──────────────────────
+echo [2/5] Kontrola WiX rozšírení...
+wix extension add "WixToolset.UI.wixext/5.0.2"    --global 2>nul
+wix extension add "WixToolset.Netfx.wixext/5.0.2" --global 2>nul
+wix extension add "WixToolset.Util.wixext/5.0.2"  --global 2>nul
+echo.
+
+REM ── 3. Build the application (Release) ───────────────────────────────────
+echo [3/5] Build BoxPacker3D (Release)...
+dotnet build BoxPacker3D.csproj -c Release -v minimal
+if errorlevel 1 (
+    echo CHYBA: Build aplikacie zlyhał!
+    pause & exit /b 1
+)
+echo.
+
+REM ── 4. Publish win-x64 (framework-dependent, only win-x64 native DLLs) ──
+echo [4/5] Publish pre win-x64...
+if exist publish\win-x64 rmdir /s /q publish\win-x64
+dotnet publish BoxPacker3D.csproj -c Release -r win-x64 --self-contained false -o publish\win-x64 -v minimal
+if errorlevel 1 (
+    echo CHYBA: Publish zlyhał!
+    pause & exit /b 1
+)
+
+REM Verify expected native DLLs are present
+if not exist "publish\win-x64\glfw3.dll" (
+    echo UPOZORNENIE: glfw3.dll nebol najdeny v publish\win-x64\
+    echo Skuste: dotnet publish -r win-x64 --self-contained true
+)
+if not exist "publish\win-x64\e_sqlite3.dll" (
+    echo UPOZORNENIE: e_sqlite3.dll nebol najdeny v publish\win-x64\
+)
+echo.
+
+REM ── 5. Build MSI ──────────────────────────────────────────────────────────
+echo [5/5] Kompilujem MSI...
+if not exist bin mkdir bin
+wix build BoxPacker3D.wxs ^
+    -o bin\BoxPacker3D.Setup.msi ^
+    -ext WixToolset.UI.wixext ^
+    -ext WixToolset.Netfx.wixext ^
+    -ext WixToolset.Util.wixext
+
+if errorlevel 1 (
+    echo.
+    echo CHYBA: Build MSI zlyhał! Skontrolujte chybove spravy vyššie.
+    pause & exit /b 1
+)
+
+echo.
+echo ================================================
+echo  HOTOVO: bin\BoxPacker3D.Setup.msi
+echo ================================================
+echo.
+explorer /select,"%~dp0bin\BoxPacker3D.Setup.msi"
+pause