feat: show persisted investment data and sync state

Consume the provided resource-envelope API snapshot. Preserve financial snapshots during
refresh, observe synchronization without importing, and fence late responses across
account and connection changes.

src/features/auth/model/auth.tsx

@@ -143,8 +143,8 @@ const AuthProvider: FC<PropsWithChildren> = (props) => {
 			refresh,
 			clear: clearSession,
 		});
-		return () => configureAuthClient(null);
 	});
+	useEffect(() => () => configureAuthClient(null), []);
 
 	return (
 		<AuthContext