- session-ui.js _reloadCasesAfterRun: reload onto the toolbar's own case after every launch, not only one that names its case; comment updated
- test/tab-new-session.test.ts: a worktree tab's "+" Claude launch, the toolbar Run and a group's "New session" each keep the toolbar's case after a "+" moved lastUsedCase (fail without the fix); the reload setup is shared with the existing lastUsedCase test
- docs/architecture-invariants.md:349: the _reloadCasesAfterRun sentence covers every launch
- app.js _openTabLayoutMenu focusout: focus landing on the trigger is not a departure, so pressing the "+" again closes its picker in a real browser
- tab-rail-resize.js openTabRailActionMenu: close the group menu too, so the rail's ... pressed again does not leave the picker beside the row menu
- tab-rail-resize.js:329-331: the "New session here…" comment no longer says Enter on the "+" does nothing
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The + announces a menu but Enter and Space did nothing on it, and the header strip has no row menu to fall back on. A + on a Docker tab the toolbar has not selected read only the link-time mode list, since nothing probed its container.
Opening the picker from the keyboard focuses an entry, so a held Enter or Space repeated onto it and launched that CLI; the shared tab-layout menu now ignores a repeated Enter or Space.
Opening another session in the case you are already working in meant re-picking the case and the mode in the toolbar. An opt-in + now sits with each tab's gear and close icons (App Settings, Tabs, New Session Button on Tabs: per device, off by default everywhere). It opens a menu of the CLIs that tab's case can start, each shown with its logo and name as in the Run menus, and a pick starts one session in that tab's case, or the managed worktree it runs in, and in its named group, without changing the Run button's mode or case.
The CLIs offered follow the Run menu's own rule for the case, so a Docker case lists what its container has rather than what the host has. A tab outside any named group sends no group, so the case's default session group places the new session the way it places a toolbar Run. Wherever a tab has a row menu (the vertical rail, the sidebar) that menu gains "New session here…", the keyboard route to the same picker, since Enter on the + itself does nothing. On a phone the + joins gear and close on the active tab only, and the label reserve grows to 68px while the setting is on, so the tab's centre stays off the icons.
The shared tab layout menu no longer closes when focus leaves an item for nowhere: Safari never focuses a clicked button, so pressing an item blurred the focused one with no related target and the click was lost. This is the tile count menu's rule, and it fixes the named-group menu as well.