feat(migration): upgrade legacy ps1 scripts to single-binary Golang platform

pkg/system/shutdown.go

@@ -0,0 +1,28 @@
+package system
+
+import (
+	"os/exec"
+	"runtime"
+	"smart-shutdown/pkg/logger"
+)
+
+// ExecuteShutdown 跨平台执行立即无条件关机
+func ExecuteShutdown() error {
+	logger.Crit("执行系统关机操作！")
+	
+	// 注意：在实际正式环境使用前，如果想防误触可暂时注释掉下方的 `cmd.Run()` 
+	var cmd *exec.Cmd
+	if runtime.GOOS == "windows" {
+		cmd = exec.Command("shutdown", "-s", "-f", "-t", "0")
+	} else {
+		cmd = exec.Command("shutdown", "-h", "now")
+	}
+
+	err := cmd.Run()
+	if err != nil {
+		logger.Crit("系统关机指令执行失败: %v", err)
+		return err
+	}
+	
+	return nil
+}