Allow the admin Studio to browse and import furniture from custom retro
hotel sources, not just official Habbo furnidata.
- GET /api/admin/import/furni?source=<id> lists a clone source's
furnidata (via getCloneList) and returns a per-item iconUrl from the
source's iconBaseUrl so previews render correctly
- Studio client gets a source selector dropdown (official Habbo plus all
configured clone_sources) that resets the selection and reloads the
list when switched
- Single and batch imports now send sourceId so SWF/nitro/icon assets
are fetched from the selected hotel's CDN
- Preview images prefer the source iconUrl with the existing fallback
chain; header shows the active source name
openhands
54f2bc5e0c