add more logging

data/lex-client.ts

···
     oauthSession = await oauthClient.restore(session.did);
   } catch (err) {
     if (err instanceof TokenRefreshError) {
-      // Session was deleted or token refresh failed - clear stale cookie and refresh UI
-      console.log(`[auth] Clearing stale session for ${session.did}: ${err.message}`);
+      const cause = err.cause instanceof Error ? err.cause.message : err.cause;
+      console.log(`[auth] TokenRefreshError ${session.did}: ${err.message} (cause: ${cause})`);
       session.destroy();
       refresh();
+    } else {
+      const msg = err instanceof Error ? err.message : err;
+      console.log(`[auth] restore failed ${session.did}: ${msg}`);
     }
     throw err;
   }