feat: add server-side clustering to CatalogPage for hubs

app/components/page/CatalogPage.vue

@@ -52,10 +52,13 @@
                 <CatalogMap
                   ref="mapRef"
                   :map-id="mapId"
-                  :items="itemsWithCoords"
+                  :items="useServerClustering ? [] : itemsWithCoords"
+                  :clustered-points="useServerClustering ? clusteredNodes : []"
+                  :use-server-clustering="useServerClustering"
                   :point-color="pointColor"
                   :hovered-item-id="hoveredId"
                   @select-item="onMapSelect"
+                  @bounds-change="onBoundsChange"
                 />
               </ClientOnly>
             </div>
@@ -97,10 +100,13 @@
               <CatalogMap
                 ref="mobileMapRef"
                 :map-id="`${mapId}-mobile`"
-                :items="itemsWithCoords"
+                :items="useServerClustering ? [] : itemsWithCoords"
+                :clustered-points="useServerClustering ? clusteredNodes : []"
+                :use-server-clustering="useServerClustering"
                 :point-color="pointColor"
                 :hovered-item-id="hoveredId"
                 @select-item="onMapSelect"
+                @bounds-change="onBoundsChange"
               />
             </ClientOnly>
           </div>
@@ -157,6 +163,8 @@
 </template>
 
 <script setup lang="ts">
+import type { MapBounds } from '~/components/catalog/CatalogMap.vue'
+
 interface MapItem {
   uuid: string
   latitude?: number | null
@@ -171,6 +179,7 @@ const props = withDefaults(defineProps<{
   mapItems?: MapItem[]  // Optional separate items for map (if different from list items)
   loading?: boolean
   withMap?: boolean
+  useServerClustering?: boolean  // Use server-side h3 clustering for ALL points
   mapId?: string
   pointColor?: string
   selectedId?: string
@@ -179,6 +188,7 @@ const props = withDefaults(defineProps<{
 }>(), {
   loading: false,
   withMap: true,
+  useServerClustering: false,
   mapId: 'catalog-map',
   pointColor: '#3b82f6',
   hasSubNav: true
@@ -194,10 +204,19 @@ const emit = defineEmits<{
   'update:hoveredId': [uuid: string | undefined]
 }>()
 
+// Server-side clustering
+const { clusteredNodes, fetchClusters } = useClusteredNodes()
+
+const onBoundsChange = (bounds: MapBounds) => {
+  if (props.useServerClustering) {
+    fetchClusters(bounds)
+  }
+}
+
 // Use mapItems if provided, otherwise fall back to items
 const itemsForMap = computed(() => props.mapItems || props.items)
 
-// Filter items with valid coordinates for map
+// Filter items with valid coordinates for map (client-side mode only)
 const itemsWithCoords = computed(() =>
   itemsForMap.value.filter(item =>
     item.latitude != null &&