feat: add onboarding command execution for non-existent config directory

cmd/picoclaw-launcher-tui/main.go

@@ -8,6 +8,8 @@ package main
 import (
 	"fmt"
 	"os"
+	"os/exec"
+	"path/filepath"
 
 	tuicfg "github.com/sipeed/picoclaw/cmd/picoclaw-launcher-tui/config"
 	"github.com/sipeed/picoclaw/cmd/picoclaw-launcher-tui/ui"
@@ -19,6 +21,15 @@ func main() {
 		configPath = os.Args[1]
 	}
 
+	configDir := filepath.Dir(configPath)
+	if _, err := os.Stat(configDir); os.IsNotExist(err) {
+		cmd := exec.Command("picoclaw", "onboard")
+		cmd.Stdin = os.Stdin
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		_ = cmd.Run()
+	}
+
 	cfg, err := tuicfg.Load(configPath)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "picoclaw-launcher-tui: %v\n", err)