fix: 修正部分進貨採購單更新失敗與狀態顯示問題

app/Modules/Procurement/Contracts/ProcurementServiceInterface.php

@@ -31,4 +31,29 @@ interface ProcurementServiceInterface
      * @return array
      */
     public function getDashboardStats(): array;
+
+    /**
+     * Update received quantity for a PO item.
+     * 
+     * @param int $poItemId
+     * @param float $quantity
+     * @return void
+     */
+    public function updateReceivedQuantity(int $poItemId, float $quantity): void;
+
+    /**
+     * Search pending or partial purchase orders.
+     * 
+     * @param string $query
+     * @return Collection
+     */
+    public function searchPendingPurchaseOrders(string $query): Collection;
+
+    /**
+     * Search vendors by name or code.
+     * 
+     * @param string $query
+     * @return Collection
+     */
+    public function searchVendors(string $query): Collection;
 }