feat: enhance v2 components and entity join functionality

- Add entity join controller/routes enhancements
- Improve table management and category value services
- Update v2 table list, card display, search widget components
- Improve split panel layout responsiveness

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/lib/registry/components/select-basic/SelectBasicComponent.tsx

@@ -258,7 +258,9 @@ const SelectBasicComponent: React.FC<SelectBasicComponentProps> = ({
               const activeValues = response.data.filter((v: any) => v.isActive !== false);
               const options = activeValues.map((v: any) => ({
                 value: v.valueCode,
-                label: v.valueLabel || v.valueCode,
+                label: (v.path && v.path.includes('/'))
+                  ? v.path.replace(/\//g, ' / ')
+                  : (v.valueLabel || v.valueCode),
               }));
               setCategoryOptions(options);
             }