message: catalog-model: ensure canonical representation from stringifyEntityRef
diff: @@ -217,11 +217,15 @@ export function serializeEntityRef(
  * Takes an entity or entity name/reference, and returns the string form of an
  * entity ref.
  *
  + * This function creates a canonical and unique reference to the entity, converting
  + * all parts of the name to lowercase and inserts the default namespace if needed.
  + * It is typically not the best way to represent the entity reference to the user.
  + *
  * @param ref The reference to serialize
  * @returns The same reference on either string or compound form
  */
  export function stringifyEntityRef(
  - ref: Entity | { kind?: string; namespace?: string; name: string },
  + ref: Entity | { kind: string; namespace?: string; name: string },
  ): string {
  let kind;
  let namespace;
  @@ -229,15 +233,15 @@ export function stringifyEntityRef(
  if ('metadata' in ref) {
  kind = ref.kind;
  - namespace = ref.metadata.namespace;
  + namespace = ref.metadata.namespace ?? ENTITY_DEFAULT_NAMESPACE;
  name = ref.metadata.name;
  } else {
  kind = ref.kind;
  - namespace = ref.namespace;
  + namespace = ref.namespace ?? ENTITY_DEFAULT_NAMESPACE;
  name = ref.name;
  }
  - return `${kind ? `${kind}:` : ''}${namespace ? `${namespace}/` : ''}${name}`;
  + return `${kind.toLowerCase()}:${namespace.toLowerCase()}/${name.toLowerCase()}`;
  }
  /**
  