Initial commit: Add playlist downloader project with UI and core functionality

run_gui_qt.bat

@@ -0,0 +1,38 @@
+@echo off
+REM Script de lancement de la version PyQt6 sur Windows
+REM Gère l'activation du venv et le lancement de l'application
+
+setlocal enabledelayedexpansion
+
+echo.
+echo 🎵 dl_yt - PyQt6 GUI Launcher (Windows)
+echo ========================================
+echo.
+
+REM Vérifier si le venv existe
+if exist ".venv" (
+    echo ✅ Activating venv...
+    call .venv\Scripts\activate.bat
+) else (
+    echo ❌ Venv not found. Create it with:
+    echo    python -m venv .venv
+    echo    .venv\Scripts\activate.bat
+    echo    pip install -r requirements.txt
+    pause
+    exit /b 1
+)
+
+REM Lancer l'application
+echo.
+echo 🚀 Starting PyQt6 GUI...
+echo.
+.venv\Scripts\python.exe main.py %*
+
+if errorlevel 1 (
+    echo.
+    echo ❌ Application failed to start
+    pause
+    exit /b 1
+)
+
+endlocal