app.tools.expand (Ctrl+O) was wired only through the editor's input path,
so when a tool-approval prompt or other selection dialog took keyboard
focus the key was delivered to that component and never reached the expand
handler — a large truncated edit could not be expanded while the user was
deciding whether to approve or deny it.
Promote the shortcut to a global TUI input listener (matching the existing
debug and branch/copy shortcuts) so it fires regardless of focus. It defers
when the main transcript is not the active surface (a fullscreen/anchored
overlay: agent hub, transcript viewer, log viewer, model picker) or when the
focused component rebinds Ctrl+O for its own use (the tree selector's filter
cycle). The editor-scoped handler is removed as a clean cutover.
Fixes#7837
roboomp
42322041c4