Working on several agent tasks in parallel means juggling terminals, worktrees, and half-remembered session IDs. This adds docker agent board, a full-screen Kanban TUI that turns that workflow into cards on a pipeline: each card launches an agent in a tmux session on an isolated git worktree, and moving a card forward (Dev → Review → Push → Done) delivers the destination column's prompt to its agent. It is a TUI port of the experimental web-based board project, built natively on docker-agent's own primitives (--worktree, --session, --listen).

The engine (pkg/board) keeps one watcher goroutine per card tailing the agent's control-plane event stream over a per-card unix socket, mirroring title and running/waiting/paused/failed status into a JSON store, and relaunching the tmux session (resuming the same conversation and worktree) if the agent dies. Prompt delivery, busy-move rejection, and delete/relaunch races are all serialized through the store and a relaunch lock. Projects and column prompts live in the user's global config file (~/.config/cagent/config.yaml, new board: section) and are editable from the TUI, which follows the main TUI's standards: shared dialog chrome, theme, keymap (remapped quit/suspend bindings are honored), scrollbars, and mouse support. Pressing enter attaches the terminal to a card's agent; ctrl+q detaches back to the board.

The board is single-instance (flock on the state file), sanitizes agent-controlled strings before rendering, runs its tmux sessions on a private validated socket, and requires tmux (it fails with a clear message otherwise; Windows builds compile but the command is effectively unix-only). Docs live in docs/features/board/.