feat(sync): harden the Hiboutik sync, share rate limits across instances, update dependencies (#4)

src/models/hiboutikDTO/stock.hiboutik.dto.ts

@@ -1,10 +1,13 @@
+import { z } from 'zod';
+import { hiboutikId, hiboutikNumber, hiboutikRef } from './hiboutik.schema';
+
 /** Available stock of one product size, as returned by Hiboutik `GET /stock_available/all_wh` (all warehouses). */
-export interface StockHiboutikDto {
-  product_id: number;
+export const stockHiboutikSchema = z.object({
+  product_id: hiboutikId,
   /** Size id, 0 for a product without sizes. */
-  product_size: number;
-  /** Decimal as a string, e.g. "3". Stays at 0 while stock management is disabled in Hiboutik. */
-  stock_available: string;
-  product_barcode: string;
-  product_supplier_reference: string;
-}
+  product_size: hiboutikRef,
+  /** Sent as a decimal string, e.g. "3". Stays at 0 while stock management is disabled in Hiboutik. */
+  stock_available: hiboutikNumber,
+});
+
+export type StockHiboutikDto = z.output<typeof stockHiboutikSchema>;