fix: restrict order quantity edits to pending orders

apps/web/src/orders/order-items-panel.tsx

@@ -51,7 +51,11 @@ export function OrderItemsPanel({ order, onUpdateQuantity }: OrderItemsPanelProp
                 <div className="text-sm text-slate-600">{item.sku}</div>
                 <div className="text-sm text-slate-500">Available: {item.availableQuantity}</div>
               </div>
+              {order.status === "pending" ? (
                 <QuantityForm itemId={item.id} quantity={item.quantity} onSave={onUpdateQuantity} />
+              ) : (
+                <div className="text-sm text-slate-600">Quantity: {item.quantity}</div>
+              )}
             </div>
           </div>
         ))}

apps/web/src/orders/order-page.tsx

@@ -72,19 +72,6 @@ export function OrderPage() {
     }
   }
 
-  async function handleUpdateQuantity(itemId: string, quantity: number) {
-    if (!order) {
-      return;
-    }
-
-    if (order.status !== "pending") {
-      setToast({ message: "Order items cannot be changed for this order status.", variant: "error" });
-      return;
-    }
-
-    await runAction(() => updateOrderItemQuantity(order.id, itemId, quantity), "Quantity saved.");
-  }
-
   return (
     <div className="space-y-4">
       <Link className="inline-flex text-sm font-medium text-blue-600 hover:text-blue-700" to="/orders">
@@ -97,7 +84,7 @@ export function OrderPage() {
         <OrderDetailPage
           order={order}
           auditEvents={auditEvents}
-          onUpdateQuantity={handleUpdateQuantity}
+          onUpdateQuantity={(itemId, quantity) => runAction(() => updateOrderItemQuantity(order.id, itemId, quantity), "Quantity saved.")}
           onSaveAddress={(address: Address) => runAction(() => updateShippingAddress(order.id, address), "Shipping address saved.")}
           onSaveNotes={(notes) => runAction(() => updateOrderNotes(order.id, notes), "Notes saved.")}
           onCancel={() => runAction(() => cancelOrder(order.id), "Order cancelled.")}