Add copy to generate address

src/tui/components/QRCode.tsx

@@ -47,6 +47,8 @@ interface QRCodeProps {
   dialogTitle?: string;
   /** Whether to display the raw encoded value as copyable text above the QR code. */
   showValue?: boolean;
+  /** Optional subtitle to display below the QR code. */
+  subtitle?: React.ReactNode;
 }
 
 /**
@@ -155,6 +157,7 @@ export function QRCode({
   dialog = false,
   dialogTitle = 'QR Code',
   showValue = false,
+  subtitle = null,
 }: QRCodeProps): React.ReactElement {
   const { rows, moduleCount } = useMemo(() => {
     const matrix = generateMatrix(value);
@@ -190,6 +193,7 @@ export function QRCode({
     return (
       <DialogWrapper title={dialogTitle} borderColor={colors.primary} width={dialogWidth}>
         {qrContent}
+        {subtitle}
       </DialogWrapper>
     );
   }