Additional codeql warning fix

Author: sebastianrath

github/server/start.go

@@ -6,8 +6,7 @@ import (
 	"net"
 	"net/http"
 	"os"
-
-	"github.com/actionforge/actrun-cli/utils"
+	"path/filepath"
 )
 
 // Config holds parameters for starting a local GitHub Actions server.
@@ -53,11 +52,11 @@ func StartServer(cfg Config) (*RunningServer, error) {
 		cfg.OIDCSub = "repo:local/repo:ref:refs/heads/main"
 	}
 
-	cleanDir, err := utils.ValidatePath(cfg.StorageDir)
+	absDir, err := filepath.Abs(cfg.StorageDir)
 	if err != nil {
 		return nil, fmt.Errorf("invalid storage directory: %w", err)
 	}
-	cfg.StorageDir = cleanDir
+	cfg.StorageDir = absDir
 
 	if err := os.MkdirAll(cfg.StorageDir, 0o755); err != nil {
 		return nil, fmt.Errorf("creating storage directory: %w", err)