- Add useClusteredNodes composable for fetching clustered nodes
- Update CatalogMap to support server-side clustering mode
- Add bounds-change event for fetching clusters on map move/zoom
- Add hover event to HubCard for marker highlighting
- Update hubs/map page to use new clustering system
- Remove Offers, Suppliers, Products, NearbyConnections sections
- Add product filter dropdown
- Show sources list with routes from findProductRoutes API
- Display routes on map using RequestRoutesMap component
- Add i18n keys for sources section (en/ru)
