feat(term): add cj/term-tmux-detach on C-; x dHEADmain

A keyboard C-b inside the Claude Code pane never reaches tmux as a prefix. It lands as stray text in the TUI's input, so C-b d can't detach the client. The new command writes C-b d into the pty instead, the same path cj/term-copy-mode-dwim already uses for C-b [. It sits on cj/term-map "d" next to copy-mode on "c", and outside tmux it writes nothing and says so.

0 files changed, 0 insertions, 0 deletions