refactor: remove all any types, add strict GraphQL scalar typing

- Add strictScalars: true to codegen.ts with proper scalar mappings
  (Date, Decimal, JSONString, JSON, UUID, BigInt → string/Record)
- Replace all ref<any[]> with proper GraphQL-derived types
- Add type guards for null filtering in arrays
- Fix bugs exposed by typing (locationLatitude vs latitude, etc.)
- Add interfaces for external components (MapboxSearchBox)

This enables end-to-end type safety from GraphQL schema to frontend.

app/pages/catalog/offers/detail/[offerId].vue

@@ -37,19 +37,19 @@
             </div>
 
             <!-- Location on map -->
-            <div v-if="offer.latitude && offer.longitude" class="h-48 rounded-lg overflow-hidden">
+            <div v-if="offer.locationLatitude && offer.locationLongitude" class="h-48 rounded-lg overflow-hidden">
               <ClientOnly>
                 <MapboxMap
                   map-id="offer-location-map"
                   class="w-full h-full"
                   :options="{
                     style: 'mapbox://styles/mapbox/streets-v12',
-                    center: [offer.longitude, offer.latitude],
+                    center: [offer.locationLongitude, offer.locationLatitude],
                     zoom: 8
                   }"
                 >
                   <MapboxDefaultMarker
-                    :lnglat="[offer.longitude, offer.latitude]"
+                    :lnglat="[offer.locationLongitude, offer.locationLatitude]"
                     color="#10b981"
                   />
                 </MapboxMap>
@@ -101,7 +101,10 @@
 </template>
 
 <script setup lang="ts">
-import { GetOfferDocument, GetSupplierProfileByTeamDocument } from '~/composables/graphql/public/exchange-generated'
+import { GetOfferDocument, GetSupplierProfileByTeamDocument, type GetOfferQueryResult, type GetSupplierProfileByTeamQueryResult } from '~/composables/graphql/public/exchange-generated'
+
+type Offer = NonNullable<GetOfferQueryResult['getOffer']>
+type SupplierProfile = NonNullable<GetSupplierProfileByTeamQueryResult['getSupplierProfileByTeam']>
 
 definePageMeta({
   layout: 'topnav'
@@ -114,8 +117,8 @@ const { execute } = useGraphQL()
 const offerId = computed(() => route.params.offerId as string)
 
 const isLoading = ref(true)
-const offer = ref<any>(null)
-const supplier = ref<any>(null)
+const offer = ref<Offer | null>(null)
+const supplier = ref<SupplierProfile | null>(null)
 
 // Load offer data
 const loadOffer = async () => {