session-peek

Embed the live session via capture-pane / send-keys.

Embed the live session in the browser. tmux is client/server, so no attached terminal is needed: read a pane with capture-pane -p -e, write with send-keys, and xterm.js renders it. xterm grabs keyboard focus, so Escape is intercepted via term.attachCustomKeyEventHandler → onClose — Esc exits the peek reliably.

The command line lives outside the terminal — a separate input element, not xterm's stdin — so the arrow keys stay ours rather than being swallowed by the terminal. While that input is empty the arrows fall through to navigation: ←/→ walk the spec tree to parent/child and ↑/↓ to siblings (see keyboard-nav) instead of editing text; once it holds text the arrows edit the line as usual.