first commit

stop_mysql.bat

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+@echo off
+setlocal enabledelayedexpansion
+chcp 65001 >nul 2>&1
+title 停止 MySQL - 自动签名系统
+
+cd /d "%~dp0"
+set MYSQL_HOME=%~dp0mysql
+
+echo ========================================
+echo   停止 MySQL 服务...
+echo ========================================
+echo.
+
+netstat -aon | findstr ":33366 " | findstr "LISTENING" >nul 2>&1
+if !errorlevel! neq 0 (
+    echo [MySQL] 端口 33366 未监听, MySQL 未在运行
+    timeout /t 3 >nul
+    exit /b 0
+)
+
+if exist "%MYSQL_HOME%\bin\mysqladmin.exe" (
+    echo [MySQL] 正在发送 shutdown...
+    "%MYSQL_HOME%\bin\mysqladmin.exe" -u root --port=33366 shutdown 2>nul
+    if !errorlevel! equ 0 (
+        echo [MySQL] 等待端口释放...
+        set DOWN=0
+        for /L %%i in (1,1,15) do (
+            if !DOWN! equ 0 (
+                timeout /t 1 /nobreak >nul 2>&1
+                netstat -aon | findstr ":33366 " | findstr "LISTENING" >nul 2>&1
+                if !errorlevel! neq 0 (
+                    set DOWN=1
+                    echo [MySQL] 已停止
+                )
+            )
+        )
+        if !DOWN! equ 0 echo [MySQL] 端口仍被占用, 可能需要手动 taskkill mysqld.exe
+    ) else (
+        echo [MySQL] shutdown 失败, 尝试 taskkill mysqld.exe
+        taskkill /f /im mysqld.exe >nul 2>&1
+    )
+) else (
+    echo [错误] 未找到 mysqladmin.exe: %MYSQL_HOME%\bin\mysqladmin.exe
+    echo        尝试 taskkill mysqld.exe
+    taskkill /f /im mysqld.exe >nul 2>&1
+)
+
+echo.
+echo 完成。 Web 服务不受影响 (如仍在运行)。
+timeout /t 3 >nul
+exit /b 0