feat(F-182): completed feature

project/apps/pos/src/lib/api-client.ts

@@ -41,6 +41,8 @@ export const posApi = {
       method: 'POST',
       body: JSON.stringify({ openingCashCents }),
     }),
+  /** Load touch category navigation and four terminal quick products. */
+  touchCatalog: <T>() => apiFetch<T>('/pos/catalog/touch'),
   /** List products by query. */
   searchProducts: (q: string, storeId?: string, limit = 20) =>
     apiFetch(`/pos/products/search?q=${encodeURIComponent(q)}&storeId=${storeId ?? ''}&limit=${limit}`),