Migrate to local PG & Update Solana Checkout

app/checkout/page.tsx

@@ -158,10 +158,10 @@ function CheckoutContent() {
                             </div>
 
                             {paymentMethod === 'crypto' ? (
-                                <CryptoCheckout 
-                                    amount={amount} 
-                                    currency={currency} 
-                                    txId={paymentData?.transactionId || 'TX-8231'}
+                                    <CryptoCheckout 
+                                        amount={amount} 
+                                        currency={currency} 
+                                        txId={paymentData?.clientSecret || 'TX-8231'}
                                     onSuccess={(hash) => {
                                         setTimeout(() => {
                                             window.location.href = `${callbackUrl}?status=success&tx_hash=${hash}`;
@@ -229,26 +229,6 @@ function CheckoutContent() {
     );
 }
 
-                            <div className="mt-8 flex justify-center lg:justify-start">
-                                <Link href={callbackUrl} className="flex items-center gap-2 text-sm font-semibold text-gray-500 hover:text-gray-900 transition translate-x-0 hover:-translate-x-1 duration-200">
-                                    <ArrowLeft size={16} />
-                                    Mağazaya Dön
-                                </Link>
-                            </div>
-                        </div>
-                    )}
-                </div>
-            </div>
-
-            {/* Footer */}
-            <footer className="py-12 border-t border-gray-100 text-center">
-                <p className="text-[#94A3B8] text-[10px] font-medium tracking-tight uppercase">
-                    © 2026 P2CGateway Inc. Tüm hakları saklıdır.
-                </p>
-            </footer>
-        </div>
-    );
-}
 
 export default function CheckoutPage() {
     return (