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/clientarea/addresses/index.vue

@@ -118,8 +118,10 @@ const onSearch = () => {
   // TODO: Implement search
 }
 
-const onSelectAddress = (item: any) => {
-  selectedAddressId.value = item.uuid
+const onSelectAddress = (item: { uuid?: string | null }) => {
+  if (item.uuid) {
+    selectedAddressId.value = item.uuid
+  }
 }
 
 await init()