Fix type safety in catalog composables + 3 InfoPanel bugs

- Add proper codegen types to all catalog composables:
  - useCatalogHubs: HubItem, NearestHubItem
  - useCatalogSuppliers: SupplierItem, NearestSupplierItem
  - useCatalogProducts: ProductItem
  - useCatalogOffers: OfferItem
  - useCatalogInfo: InfoEntity, ProductItem, HubItem, OfferItem

- Fix InfoPanel bugs for offers:
  - Use locationLatitude/locationLongitude for offer coordinates
  - Enrich entity with supplierName after loading profile
  - Apply-to-filter now adds both product AND hub for offers

- Filter null values from GraphQL array responses
- Add type-safe coordinate helper (getEntityCoords)
- Fix urlBounds type inference in useCatalogSearch

app/composables/useCatalogOffers.ts

@@ -1,9 +1,13 @@
+import type { GetOffersQueryResult } from '~/composables/graphql/public/exchange-generated'
 import { GetOffersDocument } from '~/composables/graphql/public/exchange-generated'
 
 const PAGE_SIZE = 24
 
+// Type from codegen
+type OfferItem = NonNullable<NonNullable<GetOffersQueryResult['getOffers']>[number]>
+
 // Shared state across list and map views
-const items = ref<any[]>([])
+const items = ref<OfferItem[]>([])
 const total = ref(0)
 const selectedProductUuid = ref<string | null>(null)
 const isLoading = ref(false)
@@ -18,7 +22,7 @@ export function useCatalogOffers() {
       .filter(offer => offer.locationLatitude && offer.locationLongitude)
       .map(offer => ({
         uuid: offer.uuid,
-        name: offer.productName || offer.title,
+        name: offer.productName || offer.locationName,
         latitude: offer.locationLatitude,
         longitude: offer.locationLongitude,
         country: offer.locationCountry
@@ -40,7 +44,7 @@ export function useCatalogOffers() {
         'public',
         'exchange'
       )
-      const next = data?.getOffers || []
+      const next = (data?.getOffers || []).filter((o): o is OfferItem => o !== null)
       items.value = replace ? next : items.value.concat(next)
       total.value = data?.getOffersCount ?? total.value
       isInitialized.value = true