fix: preserve reconnect across deferred workspace startup

tests/test_reconnect_outboxes.py

@@ -48,4 +48,5 @@ def test_dashboard_uses_reconnect_flush_after_live_identity_refresh():
     assert '<script src="static/reconnect-outboxes.js"></script>' in index
     assert "const reconnectOutboxes = createReconnectOutboxes({" in dashboard
     assert "restoreIdentity: login => { activeFlushLogin = login; confirmedOwnerLogin = login; }" in dashboard
-    assert "window.addEventListener('online', reconnectOutboxes);" in dashboard
+    assert "window.addEventListener('online', reconnectAfterOnline);" in dashboard
+    assert "setTimeout(reconnectOutboxes, 500)" in dashboard

tests/test_service_worker.py

@@ -1108,6 +1108,25 @@ def test_offline_activation_migrates_cached_optional_feature_before_deleting_old
     assert state["claimed"] is True
 
 
+def test_successful_optional_feature_fetch_is_cached_for_offline_reopen():
+    result = run_worker_scenario(
+        """
+  const asset = '/dashboard/feature-today-timer-test.js';
+  context.self.__testOptionalFeatures.push(asset);
+  const response = await dispatch('fetch', {
+    method: 'GET', mode: 'cors',
+    url: 'https://forge.example/dashboard/feature-today-timer-test.js',
+  });
+  process.stdout.write(JSON.stringify({ body: await response.text(), state }));
+"""
+    )
+
+    assert result["body"] == "network"
+    assert result["state"]["puts"] == [
+        "https://forge.example/dashboard/feature-today-timer-test.js"
+    ]
+
+
 def test_activate_warms_optional_features_without_blocking_siblings_or_claim():
     result = run_worker_scenario(
         """