Worktree Has A Status Menu And List Surface

The worktree cockpit splits status commands from row actions. /worktree and the main cockpit worktree entry open a transient status menu with compact repository/worktree state and direct commands such as refresh and create. /worktree list opens a tabulated worktree list only when the user needs selection-oriented actions on individual worktrees.

Keeping status in transient avoids a persistent buffer that only reformats a small status report, while the table supports selection, opening, and deleting individual worktrees.

The full status report lives in the info panel. The transient shows one line — branch, isolation, dirty state, worktree count, directory — and raises an untracked .worktrees directory as an alert line, because that is the only row of the nine that asks the user to act. The full nine-row report is the surface's info panel, opened with i, per 0105.