Add enhanced batch file with optional dependency checking

Enhanced run_comfyui.bat with:
- Automatic detection of missing critical dependencies
- Virtual environment detection and warnings
- Optional user-prompted installation with clear warnings
- Comprehensive dependency checking for all essential packages

NOTE: Author is not a professional coder and relied heavily on Cursor AI for implementation. Please review code thoroughly before merging.

create_shortcut.ps1

@@ -0,0 +1,10 @@
+$WshShell = New-Object -ComObject WScript.Shell
+$DesktopPath = [Environment]::GetFolderPath('Desktop')
+$ShortcutPath = Join-Path $DesktopPath "ComfyUI.lnk"
+$Shortcut = $WshShell.CreateShortcut($ShortcutPath)
+$Shortcut.TargetPath = "C:\Repos\ComfyUI\run_comfyui.bat"
+$Shortcut.WorkingDirectory = "C:\Repos\ComfyUI"
+$Shortcut.Description = "Run ComfyUI from repository"
+$Shortcut.Save()
+Write-Host "Shortcut created at: $ShortcutPath"
+

run_comfyui.bat

@@ -0,0 +1,101 @@
+@echo off
+cd /d "%~dp0"
+
+REM Check Python availability
+python --version >nul 2>&1
+if errorlevel 1 (
+    echo ERROR: Python is not found in PATH.
+    echo Please ensure Python is installed and added to your PATH.
+    pause
+    exit /b 1
+)
+
+REM Get Python environment information
+python -c "import sys, os; venv = os.environ.get('VIRTUAL_ENV', ''); is_venv = hasattr(sys, 'real_prefix') or (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix); env_type = 'VENV_DETECTED' if (venv or is_venv) else 'SYSTEM_PYTHON'; print(env_type); print('PYTHON_PATH=' + sys.executable)" > env_info.tmp
+for /f "tokens=1,* delims==" %%a in (env_info.tmp) do (
+    if "%%a"=="VENV_DETECTED" set ENV_TYPE=VENV_DETECTED
+    if "%%a"=="SYSTEM_PYTHON" set ENV_TYPE=SYSTEM_PYTHON
+    if "%%a"=="PYTHON_PATH" set PYTHON_PATH=%%b
+)
+del env_info.tmp
+
+REM Check for missing critical dependencies
+python -c "import importlib.util; missing = []; deps = {'yaml': 'yaml', 'torch': 'torch', 'torchvision': 'torchvision', 'torchaudio': 'torchaudio', 'numpy': 'numpy', 'einops': 'einops', 'transformers': 'transformers', 'tokenizers': 'tokenizers', 'sentencepiece': 'sentencepiece', 'safetensors': 'safetensors', 'aiohttp': 'aiohttp', 'yarl': 'yarl', 'PIL': 'Pillow', 'scipy': 'scipy', 'tqdm': 'tqdm', 'psutil': 'psutil', 'alembic': 'alembic', 'sqlalchemy': 'sqlalchemy', 'av': 'av', 'comfyui_frontend': 'comfyui_frontend', 'comfyui_workflow_templates': 'comfyui_workflow_templates', 'comfyui_embedded_docs': 'comfyui_embedded_docs'}; [missing.append(k) for k, v in deps.items() if not importlib.util.find_spec(v)]; print(','.join(missing) if missing else 'ALL_OK')" > deps_check.tmp
+set /p MISSING_DEPS=<deps_check.tmp
+del deps_check.tmp
+
+if "%MISSING_DEPS%"=="ALL_OK" goto :start_comfyui
+
+REM Dependencies are missing - show warnings and prompt user
+echo.
+echo ========================================
+echo MISSING DEPENDENCIES DETECTED
+echo ========================================
+echo.
+echo The following critical dependencies are missing:
+echo %MISSING_DEPS%
+echo.
+
+REM Display environment warnings
+if "%ENV_TYPE%"=="VENV_DETECTED" (
+    echo [INFO] You are running in a virtual environment.
+    echo [INFO] Installing packages here is safe and recommended.
+    echo.
+) else (
+    echo [WARNING] You are using system Python or user site-packages.
+    echo [WARNING] Installing packages here may affect other applications.
+    echo [WARNING] Consider using a virtual environment for better isolation.
+    echo.
+)
+
+echo Python executable: %PYTHON_PATH%
+echo.
+echo ========================================
+echo INSTALLATION WARNING
+echo ========================================
+echo.
+echo This will install packages using: %PYTHON_PATH%
+echo.
+echo Potential risks:
+echo   - If using system Python, packages may conflict with other applications
+echo   - If using user site-packages, packages are installed per-user
+echo   - Virtual environments are recommended for isolation
+echo.
+echo If you are unsure, you can:
+echo   1. Create a virtual environment: python -m venv venv
+echo   2. Activate it: venv\Scripts\activate
+echo   3. Then run this script again
+echo.
+set /p INSTALL_CHOICE="Do you want to install missing dependencies now? (Y/N): "
+
+if /i not "%INSTALL_CHOICE%"=="Y" (
+    echo.
+    echo Installation cancelled.
+    echo.
+    echo To install dependencies manually, run:
+    echo   python -m pip install -r requirements.txt
+    echo.
+    pause
+    exit /b 0
+)
+
+echo.
+echo Installing dependencies...
+python -m pip install -r requirements.txt
+if errorlevel 1 (
+    echo.
+    echo ERROR: Failed to install dependencies.
+    echo Please check the error messages above and try installing manually:
+    echo   python -m pip install -r requirements.txt
+    pause
+    exit /b 1
+)
+
+echo.
+echo Dependencies installed successfully.
+echo.
+
+:start_comfyui
+python main.py
+pause
+