chore(dev): stop.bat 仅 ASCII，避免 Windows GBK 乱码断行

cmd 按 ANSI 解析 .bat，中文提示改由带 BOM 的 stop.ps1 输出。

Co-authored-by: Cursor <cursoragent@cursor.com>

stop.bat

@@ -1,21 +1,19 @@
 @echo off
+REM ASCII-only: cmd.exe on Chinese Windows misparses UTF-8 .bat as GBK and breaks lines.
 title jiang13-bbs stopper
 echo ============================================
 echo   jiang13-bbs Dev Stopper
 echo ============================================
 echo.
-echo 按端口终止监听进程树（:3000 前端 / :3001 后端）...
-echo.
 
-REM 仅关 Cursor 终端 / Ctrl+C 往往杀不掉 go run / node 的子进程；
-REM 此处按 Listen 端口取 OwningProcess，再 taskkill /T 杀整棵树。
 powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0stop.ps1"
 if errorlevel 1 (
-  echo [WARN] stop.ps1 执行异常，可手动：taskkill /T /F /PID ^<pid^>
+  echo [WARN] stop.ps1 failed. Manual: taskkill /T /F /PID ^<pid^>
+  pause
+  exit /b 1
 )
 
 echo.
-echo [OK] 端口清理完成。
-echo PostgreSQL（Docker）未动；若要停库：docker compose down
+echo [OK] Done. Postgres untouched; stop DB with: docker compose down
 echo ============================================
 pause