修复服务管理

服务管理.bat

@@ -27,14 +27,18 @@ if not exist "%NSSM_EXE%" (
 )
 
 REM 检查虚拟环境
+set "PYTHON_PATH="
 if exist ".venv\Scripts\python.exe" (
-    set PYTHON_PATH=%cd%\.venv\Scripts\python.exe
+    set "PYTHON_PATH=%cd%\.venv\Scripts\python.exe"
 ) else (
-    for /f "delims=" %%i in ('where python') do (
-        set PYTHON_PATH=%%i
-        goto :found_python
+    for /f "delims=" %%i in ('where python 2^>nul') do (
+        if not defined PYTHON_PATH set "PYTHON_PATH=%%i"
+    )
+    if not defined PYTHON_PATH (
+        echo [错误] 未找到 Python，请先安装 Python 或创建虚拟环境
+        pause
+        exit /b 1
     )
-    :found_python
 )
 
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