fix(pos-selfpay): use confirmSaleWith to avoid stale state when confirming from modal

project/apps/pos/src/app/(terminal)/page.tsx

@@ -525,6 +525,66 @@ export default function RegisterPage() {
     }
   };
 
+  // POS-SELFPAY-FLOW: confirm sale with explicit payment list (avoids stale state in selfpay modal)
+  const confirmSaleWith = async (allocations: PaymentAllocation[]) => {
+    if (!config?.session) {
+      setError('No hay sesión abierta');
+      return;
+    }
+    if (cart.length === 0) {
+      setError('Carrito vacío');
+      return;
+    }
+    const totalAllocated = allocations.reduce((sum, a) => sum + a.amountCents, 0);
+    if (totalAllocated > totals.total) {
+      setError('Los pagos asignados superan el total');
+      return;
+    }
+    setPayments(allocations);
+    setProcessing(true);
+    setError('');
+    try {
+      const saleItems = cart.map((item) => {
+        if (item.kind === 'free' || !item.variantId) {
+          return {
+            kind: 'free' as const,
+            name: item.name,
+            unitPriceCents: item.unitPriceCents,
+            quantity: item.quantity,
+          };
+        }
+        return {
+          kind: 'stock' as const,
+          variantId: item.variantId,
+          quantity: item.quantity,
+          discountCents: item.discountCents,
+        };
+      });
+      const result = await posApi.createSale<PosSaleResponse>({
+        idempotencyKey: generateIdempotencyKey(),
+        cashSessionId: config.session.id,
+        terminalId: config.terminal.id,
+        items: saleItems,
+        payments: allocations.map((payment) => ({
+          methodCode: payment.methodCode,
+          amountCents: payment.amountCents,
+          ...(payment.kind === 'cash' ? { tenderedCents: payment.tenderedCents } : {}),
+        })),
+        ...(customer ? { customerId: customer.id } : {}),
+      });
+      setReceipt(result.receipt);
+      setRestPaymentFor(null);
+      if (isSelfpayMode && selfpayEmail.trim()) {
+        void posApi.emailReceipt(result.receipt.orderId, selfpayEmail.trim()).catch(() => {});
+      }
+      void loadPendingSales();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'No se pudo confirmar la venta');
+    } finally {
+      setProcessing(false);
+    }
+  };
+
   const parkSale = async () => {
     if (!config?.session) {
       setError('No hay sesión abierta');
@@ -1857,8 +1917,7 @@ export default function RegisterPage() {
                       ...(method.kind === 'cash' ? { tenderedCents: remainingCents } : {}),
                       changeCents: 0,
                     };
-                    setPayments([allocation]);
-                    void confirmSale();
+                    void confirmSaleWith([allocation]);
                   }}
                   disabled={remainingCents === 0}
                   className={`min-h-16 rounded-xl px-2 font-bold text-white disabled:opacity-40 ${method.kind === 'cash' ? 'bg-green-600' : method.kind === 'card' ? 'bg-blue-600' : 'bg-slate-700'}`}