feat(sync): validate Hiboutik payloads, read French dates and guard deletions

- Hiboutik payloads are zod schemas, validated by HiboutikClient (getOne
  added for single resources: null on 404 or empty answer).
- Hiboutik dates are read as Europe/Paris whatever the server time zone.
- Paginated lists driving deletions are walked twice when they span several
  pages (brands, categories, products); categories are sorted by id.
- A customer missing from the list is deleted only once Hiboutik confirms
  it; completed orders that lost their customer are linked back.
- Each product and its versions are written in one transaction.
- An email removed in Hiboutik is erased in database.
- A 429 is retried with backoff, then stops the synchronization.

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

src/models/converter/customerAddress.converter.spec.ts

@@ -1,23 +1,22 @@
 import { CustomerAddressConverter } from './customerAddress.converter';
 import { CustomerAddressHiboutikDto } from '../hiboutikDTO/customer.hiboutik.dto';
 
-const hiboutikAddress = (overrides: Partial<CustomerAddressHiboutikDto> = {}): CustomerAddressHiboutikDto =>
-  ({
-    address_id: 7,
-    customers_id: 42,
-    first_name: 'Jane',
-    last_name: 'Doe',
-    company: 'ACME',
-    phone: '0600000000',
-    address: ' 1 rue de la Paix ',
-    zip_code: '75002',
-    city: 'Paris',
-    state: '',
-    country: 'FRA',
-    other: 'Bât. B',
-    default: 1,
-    ...overrides,
-  }) as CustomerAddressHiboutikDto;
+const hiboutikAddress = (overrides: Partial<CustomerAddressHiboutikDto> = {}): CustomerAddressHiboutikDto => ({
+  address_id: 7,
+  customers_id: 42,
+  first_name: 'Jane',
+  last_name: 'Doe',
+  company: 'ACME',
+  phone: '0600000000',
+  address: ' 1 rue de la Paix ',
+  zip_code: '75002',
+  city: 'Paris',
+  state: '',
+  country: 'FRA',
+  other: 'Bât. B',
+  default: 1,
+  ...overrides,
+});
 
 describe('CustomerAddressConverter', () => {
   const converter = new CustomerAddressConverter();
@@ -40,17 +39,8 @@ describe('CustomerAddressConverter', () => {
     });
   });
 
-  it('accepts ids and flags sent as strings', () => {
-    const address = converter.fromHiboutik(hiboutikAddress({ address_id: '8', customers_id: '43', default: '0' } as never));
-    expect(address.hiboutikId).toBe(8);
-    expect(address.isDefault).toBe(false);
-    expect(address.customer).toEqual({ connect: { hiboutikId: 43 } });
-  });
-
   it('erases empty optional fields (null) and defaults empty required ones to ""', () => {
-    const address = converter.fromHiboutik(
-      hiboutikAddress({ company: ' ', phone: null as unknown as string, other: '', first_name: null as unknown as string }),
-    );
+    const address = converter.fromHiboutik(hiboutikAddress({ company: ' ', phone: '', other: '', first_name: '' }));
     expect(address.company).toBeNull();
     expect(address.phone).toBeNull();
     expect(address.other).toBeNull();