更新分享弹框：添加备用地址和二维码

frontend/src/components/TradePanel.tsx

@@ -751,10 +751,11 @@ function ReturnChartModal({ onClose, allKlines, history, initialIndex, currentIn
             <div className="flex flex-col gap-1">
               <div className="text-white font-bold text-sm">StockReplay 复盘挑战</div>
               <div className="text-blue-400 text-xs font-mono">https://jiaoyi.netlify.app</div>
+              <div className="text-blue-400 text-xs font-mono">https://jiaoyi.s-ai.sbs</div>
               <div className="text-gray-500 text-[10px] mt-1">扫描二维码，开启你的复盘之旅</div>
             </div>
             <div className="bg-white p-1.5 rounded-lg">
-              <QRCodeSVG value="https://jiaoyi.netlify.app" size={60} level="H" />
+              <QRCodeSVG value="https://jiaoyi.s-ai.sbs" size={60} level="H" />
             </div>
           </div>
         </div>