feat(sync): synchronize customer addresses

Mirror the addresses embedded in GET /customer/🆔 per customer, delete
the ones missing from Hiboutik, then upsert each of them (failures logged
and skipped). CustomerAddress gains its own recipient (firstName,
lastName, company, phone) plus state and other.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/models/converter/customerAddress.converter.ts

@@ -0,0 +1,32 @@
+import { Injectable } from '@nestjs/common';
+import { Converter } from './converter';
+import { CustomerAddressCreateInput } from '../../../prisma/generated/models/CustomerAddress';
+import { CustomerAddressHiboutikDto } from '../hiboutikDTO/customer.hiboutik.dto';
+
+/** Trimmed value, `null` when empty so that a value removed in Hiboutik is also removed in database. */
+const optional = (value: string | null | undefined): string | null => value?.trim() || null;
+const required = (value: string | null | undefined): string => value?.trim() ?? '';
+
+@Injectable()
+export class CustomerAddressConverter extends Converter<CustomerAddressCreateInput, CustomerAddressHiboutikDto> {
+  fromHiboutik(dto: CustomerAddressHiboutikDto): CustomerAddressCreateInput {
+    return {
+      address: required(dto.address),
+      city: required(dto.city),
+      company: optional(dto.company),
+      country: required(dto.country),
+      firstName: required(dto.first_name),
+      hiboutikId: Number(dto.address_id),
+      isDefault: Number(dto.default) === 1,
+      lastName: required(dto.last_name),
+      other: optional(dto.other),
+      phone: optional(dto.phone),
+      state: optional(dto.state),
+      zipCode: required(dto.zip_code),
+      customer: { connect: { hiboutikId: Number(dto.customers_id) } },
+    };
+  }
+  toHiboutik(): CustomerAddressHiboutikDto {
+    throw new Error('Method not implemented.');
+  }
+}