### starter > starter.go
```go



var (
	// Default configuration
	appName     = filepath.Base(os.Args[0])
	appVersion  = "1.0.0"
	pidPath     = ".pid"
	logPath     = ""
	stopTimeout = 5 * time.Second

	// Internal state
	commands = make(map[string]*command)
	onStart  func(ctx context.Context)
	onStop   func()
	onReload func()

	// Flags
	flagSet = flag.NewFlagSet(appName, flag.ContinueOnError)
)

type command struct {
	name string
	desc string
	fn   func()
}

func init()


// SetInfo sets the application name and version.
func SetInfo(name, version string)


// SetPidFile sets the default PID file path.
func SetPidFile(path string)


// SetLogFile sets the default log file path.
func SetLogFile(path string)


// AddCmd adds a custom command.
func AddCmd(name, desc string, fn func())


// OnStart sets the function to be called when the service starts.
// The context will be canceled when a stop signal is received.
func OnStart(fn func(ctx context.Context))


// OnStop sets the function to be called when the service is stopping.
func OnStop(fn func())


// OnReload sets the function to be called when SIGHUP is received.
func OnReload(fn func())


// Run parses arguments and executes the service.
func Run()


func showHelp()


func runForeground()


func startCmd()


func stopCmd()


func restartCmd()


func statusCmd()


func savePid(p int)


func loadPid() int


func removePid()


func isProcessRunning(p int) bool

```