feat: add short ID column to list, improve connect error with hint

cmd/hostkeeper/connect.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"strings"
 	"time"
 
 	"github.com/spf13/cobra"
@@ -118,7 +119,11 @@ func findHost(ctx context.Context, store storage.Storage, identifier string) (*m
 	}
 
 	// Host not found, provide helpful error
-	return nil, fmt.Errorf("host '%s' not found. Use 'hostkeeper list' to see available hosts", identifier)
+	msg := fmt.Sprintf("host '%s' not found. Use 'hostkeeper list' to see available hosts", identifier)
+	if strings.Contains(identifier, " ") {
+		msg += fmt.Sprintf("\nHint: if the host name contains spaces, quote it: connect \"%s\"", identifier)
+	}
+	return nil, fmt.Errorf("%s", msg)
 }
 
 // connectWithNativeSSH uses the system SSH client