refactor(FE-208,212): update PurchaseOrderForm and PurchaseOrderStaffApprovalForm for improved validation and dynamic item handling

src/types/api/purchase/purchase.d.ts

@@ -76,12 +76,24 @@ export type CreatePurchaseRequestPayload = {
 export type CreateStaffApprovalRequestPayload = {
   notes?: string | null;
   items: {
-    purchase_item_id: number;
+    product_id: number;
+    warehouse_id: number;
+    qty: number;
     price: number;
     total_price: number;
   }[];
 };
 
+export type UpdateStaffApprovalRequestPayload = {
+  items: {
+    purchase_item_id: number;
+    qty: number;
+    price: number;
+    total_price: number;
+  }[];
+  'notes?': string | null;
+};
+
 export type CreateManagerApprovalRequestPayload = {
   notes?: string | null;
 };