fix

id/system.go

@@ -9,7 +9,7 @@ type SystemID struct{}
 func (t *SystemID) Type() string { return Space }
 
 func (t *SystemID) String() string {
-	return "/" + System
+	return string(Separator) + System
 }
 
 func (t *SystemID) ToMap() map[string]any {