Add event listener for iframe message

src/index.tsx

@@ -18,6 +18,35 @@ import { createTheme, ThemeProvider } from "@mui/material";
 
 globalThis.Buffer = Buffer;
 
+window.addEventListener('message', (event: MessageEvent) => {
+  if (event.origin !== 'http://localhost:3001') return;
+
+  if (event.data.type === 'REQUEST_LOCAL_STORAGE') {
+    try {
+      const data = localStorage.getItem('accounts/cosmos:laconic-testnet-2/0');
+
+      if (!data) {
+        event.source?.postMessage({
+          type: 'ERROR',
+          message: 'Data not found in local storage'
+        });
+        return;
+      }
+
+      (event.source as Window)?.postMessage({
+        type: 'LOCAL_STORAGE_DATA',
+        data
+      }, 'http://localhost:3001');
+
+    } catch (error) {
+      (event.source as Window)?.postMessage({
+        type: 'ERROR',
+        message: 'Error accessing local storage'
+      }, 'http://localhost:3001');
+    }
+  }
+});
+
 const linking = {
   prefixes: ["https://wallet.laconic.com"],
 };