ctrl-a is consumed as the leader on every press, so it never reaches the shell and readline's beginning-of-line was gone with no way back — unlike Ctrl-K, which already has an escape hatch. Fix it the way tmux does: pressing the leader twice sends the literal leader byte to the focused pane and clears the pending chord, on both web and TUI, built from the configured leader so a rebound leader carries it. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>