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/components/GoodsContent.vue

@@ -35,14 +35,16 @@
 </template>
 
 <script setup lang="ts">
-import { GetProductsDocument } from '~/composables/graphql/public/exchange-generated'
+import { GetProductsDocument, type GetProductsQueryResult } from '~/composables/graphql/public/exchange-generated'
+
+type Product = NonNullable<NonNullable<GetProductsQueryResult['getProducts']>[number]>
 
 const searchStore = useSearchStore()
 
 const { data, pending, error, refresh } = await useServerQuery('products', GetProductsDocument, {}, 'public', 'exchange')
 const productsData = computed(() => data.value?.getProducts || [])
 
-const selectProduct = (product: any) => {
+const selectProduct = (product: Product) => {
   searchStore.setProduct(product.name)
   searchStore.setProductUuid(product.uuid)
   const locationUuid = searchStore.searchForm.locationUuid