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

2026-09-15T00:48:25Z

Co-Authored-By: Claude Opus 5 Claude-Session: https://claude.ai/code/session_01XuNrwLf5EFWCMHzfoEvnpm

fix(hub): fall back to the group's first app when the landing tab is absent

2026-09-01T22:38:27Z

A group could open on a tab that rendered nothing: no panel, no tab shown active, and nothing on screen to explain it. The landing tab is chosen at mount from a preference -- default_tab for the group, else the account-wide one, else 'chat'. Which applications the group runs comes from the node, in the handshake ack, several awaits later. A preference is a preference, not a promise that the app exists here, so the two disagree in two ordinary cases: the group has Chat disabled while 'chat' is everyone's default, or the reader prefers an app this group does not run. `apps.map(a => tab === a.key && ...)` then matches nothing. The first app the group does offer answers both. Two more cases come free: a preference naming an app that no longer exists, and an operator disabling the app someone is currently looking at -- enabledApps changes live over apps_enabled, and being moved to a working tab beats staring at an empty panel. Settings is exempt: it is not an application, and the create-group wizard lands on it deliberately. `const apps` moves above the effect that reads it; a const further down would be in its temporal dead zone, which is the hook-ordering trap already recorded in CLAUDE.md. tests/harness/group_tab_probe.py renders the real GroupPage against a stub node answering a chosen enabled_apps and reads the tab bar back, over five cases. With the fix reverted the three fallback cases report no active tab at all and four of the six tests fail; the two that pass either way are the ones that must not change -- a group running everything, and a preference the group does honour (Videos stays selected, so the fallback has not become "always the first app"). Co-Authored-By: Claude Opus 5 Claude-Session: https://claude.ai/code/session_01W8oRqEHhnKUr1NfmTVdcyL

meshbay.git/packages/meshbay-hub/tests/test_group_tab_fallback.py, branch 0.15

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

fix(hub): fall back to the group's first app when the landing tab is absent