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/useCatalogSearch.ts

@@ -85,12 +85,12 @@ export function useCatalogSearch() {
   const quantity = computed(() => route.query.qty as string | undefined)
 
   // Map bounds from URL (format: west,south,east,north)
-  const urlBounds = computed(() => {
+  const urlBounds = computed((): { west: number; south: number; east: number; north: number } | null => {
     const b = route.query.bounds as string | undefined
     if (!b) return null
     const parts = b.split(',').map(Number)
     if (parts.length !== 4 || parts.some(isNaN)) return null
-    return { west: parts[0], south: parts[1], east: parts[2], north: parts[3] }
+    return { west: parts[0]!, south: parts[1]!, east: parts[2]!, north: parts[3]! }
   })
 
   // Filter by bounds checkbox state from URL