refactor: use canonical ObjectDefinitionRelationship type in converter

Agent-Logs-Url: https://github.com/objectstack-ai/objectui/sessions/acfc66f8-324c-4b4b-bdeb-08a5b6f52fd6

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

apps/console/src/utils/metadataConverters.ts

@@ -10,7 +10,7 @@
  * @module utils/metadataConverters
  */
 
-import type { ObjectDefinition, DesignerFieldDefinition, DesignerFieldType } from '@object-ui/types';
+import type { ObjectDefinition, ObjectDefinitionRelationship, DesignerFieldDefinition, DesignerFieldType } from '@object-ui/types';
 
 // ---------------------------------------------------------------------------
 // Raw metadata shapes (from the ObjectStack API)
@@ -87,7 +87,7 @@ export function toObjectDefinition(obj: MetadataObject, index: number): ObjectDe
     relationships: Array.isArray(obj.relationships)
       ? obj.relationships.map((r) => ({
           relatedObject: r.object || r.relatedObject || '',
-          type: (r.type || 'one-to-many') as 'one-to-one' | 'one-to-many' | 'many-to-one' | 'many-to-many',
+          type: (r.type || 'one-to-many') as ObjectDefinitionRelationship['type'],
           label: r.label || r.name || undefined,
           foreignKey: r.foreign_key || r.foreignKey || undefined,
         }))