Improve compatibility and add one-click startup scripts

- Add Windows Portable Package support with auto-detection
- Fix API health check to support multiple response formats
- Fix task ID parsing for ACE-Step API integration
- Change thinking mode default to false for 4GB GPU compatibility
- Add explicit CoT parameter control for LLM features
- Fix audio download path encoding for portable package
- Improve file upload validation with extension fallback
- Add start-all.bat/sh scripts for one-click startup
- Update README with Windows Portable Package instructions
- Add comprehensive troubleshooting section
- Improve cross-platform compatibility

start-all.bat

@@ -0,0 +1,112 @@
+@echo off
+REM ACE-Step UI Complete Startup Script for Windows
+REM Starts ACE-Step API + Backend + Frontend
+setlocal
+
+echo ==================================
+echo   ACE-Step Complete Startup
+echo ==================================
+echo.
+
+REM Check if node_modules exists
+if not exist "node_modules" (
+    echo Error: UI dependencies not installed!
+    echo Please run setup.bat first.
+    pause
+    exit /b 1
+)
+
+if not exist "server\node_modules" (
+    echo Error: Server dependencies not installed!
+    echo Please run setup.bat first.
+    pause
+    exit /b 1
+)
+
+REM Get ACE-Step path from environment or use default
+if "%ACESTEP_PATH%"=="" (
+    set ACESTEP_PATH=..\ACE-Step-1.5
+)
+
+REM Check if ACE-Step exists
+if not exist "%ACESTEP_PATH%" (
+    echo.
+    echo Warning: ACE-Step not found at %ACESTEP_PATH%
+    echo.
+    echo Please set ACESTEP_PATH or place ACE-Step-1.5 next to ace-step-ui
+    echo Example: set ACESTEP_PATH=C:\ACE-Step-1.5
+    echo.
+    pause
+    exit /b 1
+)
+
+REM Detect ACE-Step installation type
+set API_COMMAND=
+if exist "%ACESTEP_PATH%\python_embeded\python.exe" (
+    echo [+] Detected Windows Portable Package
+    set API_COMMAND=python_embeded\python acestep\api_server.py
+) else (
+    echo [+] Detected Standard Installation
+    set API_COMMAND=uv run acestep-api --port 8001
+)
+
+REM Get local IP for LAN access
+for /f "tokens=2 delims=:" %%a in ('ipconfig ^| findstr /c:"IPv4"') do (
+    for /f "tokens=1" %%b in ("%%a") do (
+        set LOCAL_IP=%%b
+    )
+)
+
+echo.
+echo ==================================
+echo   Starting All Services...
+echo ==================================
+echo.
+
+REM Start ACE-Step API in new window
+echo [1/3] Starting ACE-Step API server...
+start "ACE-Step API Server" cmd /k "cd /d "%ACESTEP_PATH%" && %API_COMMAND%"
+
+REM Wait for API to start
+echo Waiting for API to initialize...
+timeout /t 5 /nobreak >nul
+
+REM Start backend in new window
+echo [2/3] Starting backend server...
+start "ACE-Step UI Backend" cmd /k "cd /d "%~dp0server" && npm run dev"
+
+REM Wait for backend to start
+echo Waiting for backend to start...
+timeout /t 3 /nobreak >nul
+
+REM Start frontend in new window
+echo [3/3] Starting frontend...
+start "ACE-Step UI Frontend" cmd /k "cd /d "%~dp0" && npm run dev"
+
+REM Wait a moment
+timeout /t 2 /nobreak >nul
+
+echo.
+echo ==================================
+echo   All Services Running!
+echo ==================================
+echo.
+echo   ACE-Step API: http://localhost:8001
+echo   Backend:      http://localhost:3001
+echo   Frontend:     http://localhost:3000
+echo.
+if defined LOCAL_IP (
+    echo   LAN Access:   http://%LOCAL_IP%:3000
+    echo.
+)
+echo   Close the terminal windows to stop all services.
+echo.
+echo ==================================
+echo.
+echo Opening browser...
+timeout /t 3 /nobreak >nul
+start http://localhost:3000
+
+echo.
+echo Press any key to close this window (services will keep running)
+pause >nul