fix(ui): a group opened directly lands on the preferred app once preferences load0.14

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XuNrwLf5EFWCMHzfoEvnpm

1 files changed, 19 insertions, 0 deletions

diff --git a/packages/meshbay-hub/tests/test_group_tab_fallback.py b/packages/meshbay-hub/tests/test_group_tab_fallback.py
index 6310b9c..634c5eb 100644
--- a/packages/meshbay-hub/tests/test_group_tab_fallback.py
+++ b/packages/meshbay-hub/tests/test_group_tab_fallback.py
@@ -67,6 +67,25 @@ def test_a_preference_that_names_nothing_falls_back(cases):
     assert cases["preference names nothing real"]["active"] == 0
 
 
+def test_a_preference_that_arrives_after_the_group_opened_applies(cases):
+    """The reported bug: Videos chosen in Settings, and a group opened directly
+    (a reload, a link) still landed on Chat.
+
+    app.js fetches the preferences after sign-in; GroupPage chose its tab at
+    mount and never looked again.
+    """
+    case = cases["preference arrives after the group opened"]
+    assert case["active"] == 2, (
+        f"the preference arrived and was ignored: landed on tab {case['active']}")
+
+
+def test_a_late_preference_does_not_undo_a_tab_the_reader_chose(cases):
+    """Arriving late must not yank someone off a tab they just clicked."""
+    case = cases["tab chosen before the preference arrives"]
+    assert case["active"] == 1, (
+        f"the reader clicked Files and was moved to tab {case['active']}")
+
+
 def test_a_preference_the_group_offers_is_kept(cases):
     """The fallback must not become 'always the first app'."""
     case = cases["preferred app present"]