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/offers/[uuid].vue

@@ -118,7 +118,9 @@ import { FormKitSchema } from '@formkit/vue'
 import type { FormKitSchemaNode } from '@formkit/core'
 import { GetProductsDocument } from '~/composables/graphql/public/exchange-generated'
 import { CreateOfferDocument } from '~/composables/graphql/team/exchange-generated'
-import { GetTeamAddressesDocument } from '~/composables/graphql/team/teams-generated'
+import { GetTeamAddressesDocument, type GetTeamAddressesQueryResult } from '~/composables/graphql/team/teams-generated'
+
+type TeamAddress = NonNullable<NonNullable<GetTeamAddressesQueryResult['teamAddresses']>[number]>
 
 definePageMeta({
   layout: 'topnav',
@@ -147,7 +149,7 @@ const productName = ref<string>('')
 const schemaId = ref<string | null>(null)
 const schemaDescription = ref<string | null>(null)
 const formkitSchema = ref<FormKitSchemaNode[]>([])
-const addresses = ref<any[]>([])
+const addresses = ref<TeamAddress[]>([])
 const selectedAddressUuid = ref<string | null>(null)
 const formKitConfig = {
   classes: {
@@ -169,8 +171,8 @@ const loadAddresses = async () => {
   try {
     const { data, error: addressesError } = await useServerQuery('offer-form-addresses', GetTeamAddressesDocument, {}, 'team', 'teams')
     if (addressesError.value) throw addressesError.value
-    addresses.value = data.value?.teamAddresses || []
-    const defaultAddress = addresses.value.find((address: any) => address.isDefault)
+    addresses.value = (data.value?.teamAddresses || []).filter((a): a is TeamAddress => a !== null)
+    const defaultAddress = addresses.value.find((address) => address.isDefault)
     selectedAddressUuid.value = defaultAddress?.uuid || addresses.value[0]?.uuid || null
   } catch (err) {
     console.error('Failed to load addresses:', err)
@@ -189,7 +191,7 @@ const loadData = async () => {
     const { data: productsData, error: productsError } = await useServerQuery('offer-form-products', GetProductsDocument, {}, 'public', 'exchange')
     if (productsError.value) throw productsError.value
     const products = productsData.value?.getProducts || []
-    const product = products.find((p: any) => p.uuid === productUuid.value)
+    const product = products.find((p) => p?.uuid === productUuid.value)
 
     if (!product) {
       throw new Error(t('clientOfferForm.errors.productNotFound', { uuid: productUuid.value }))
@@ -219,9 +221,9 @@ const loadData = async () => {
     formkitSchema.value = schemaToFormKit(terminusClass, enums)
     await loadAddresses()
 
-  } catch (err: any) {
+  } catch (err: unknown) {
     hasError.value = true
-    error.value = err.message || t('clientOfferForm.error.load')
+    error.value = err instanceof Error ? err.message : t('clientOfferForm.error.load')
     console.error('Load error:', err)
   } finally {
     isLoading.value = false
@@ -237,7 +239,7 @@ const handleSubmit = async (data: Record<string, unknown>) => {
       throw new Error(t('clientOfferForm.error.load'))
     }
 
-    const selectedAddress = addresses.value.find((address: any) => address.uuid === selectedAddressUuid.value)
+    const selectedAddress = addresses.value.find((address) => address?.uuid === selectedAddressUuid.value)
     if (!selectedAddress) {
       throw new Error(t('clientOfferForm.error.save'))
     }
@@ -253,14 +255,14 @@ const handleSubmit = async (data: Record<string, unknown>) => {
       locationCountryCode: selectedAddress.countryCode || '',
       locationLatitude: selectedAddress.latitude,
       locationLongitude: selectedAddress.longitude,
-      quantity: data.quantity || 0,
+      quantity: String(data.quantity || '0'),
       unit: String(data.unit || 'ton'),
-      pricePerUnit: data.price_per_unit || data.pricePerUnit || null,
+      pricePerUnit: String(data.price_per_unit || data.pricePerUnit || ''),
       currency: String(data.currency || 'USD'),
       description: String(data.description || ''),
-      validUntil: data.valid_until || data.validUntil || null,
+      validUntil: (data.valid_until as string | undefined) ?? (data.validUntil as string | undefined) ?? undefined,
       terminusSchemaId: schemaId.value,
-      terminusPayload: JSON.stringify(data),
+      terminusPayload: data,
     }
 
     const result = await mutate(CreateOfferDocument, { input }, 'team', 'exchange')
@@ -270,8 +272,8 @@ const handleSubmit = async (data: Record<string, unknown>) => {
 
     await navigateTo(localePath('/clientarea/offers'))
 
-  } catch (err: any) {
-    error.value = err.message || t('clientOfferForm.error.save')
+  } catch (err: unknown) {
+    error.value = err instanceof Error ? err.message : t('clientOfferForm.error.save')
     hasError.value = true
   } finally {
     isSubmitting.value = false