chore(dev): 按端口杀进程树，避免 Windows 孤儿监听

新增 stop.bat/ps1/sh，并写入本地开发规则：停服务用脚本、停后复核端口。

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

stop.ps1

@@ -0,0 +1,24 @@
+# 按 Listen 端口终止进程树（含子进程）。默认 :3000 前端 / :3001 后端。
+# 由 stop.bat 调用；也可直接：powershell -File stop.ps1
+
+param(
+  [int[]]$Ports = @(3000, 3001)
+)
+
+$ErrorActionPreference = 'SilentlyContinue'
+
+foreach ($port in $Ports) {
+  $pids = @(
+    Get-NetTCPConnection -LocalPort $port -State Listen |
+      Select-Object -ExpandProperty OwningProcess -Unique
+  )
+  if (-not $pids -or $pids.Count -eq 0) {
+    Write-Host "  :$port 空闲"
+    continue
+  }
+  foreach ($procId in $pids) {
+    if ($procId -le 0) { continue }
+    Write-Host "  :$port -> PID $procId (含子进程)"
+    & taskkill.exe /T /F /PID $procId | Out-Null
+  }
+}