The picker now leads the form in both clients and takes focus on open, so
Tab walks from it into the command tiles. Opening the form also preselects
the project of the session you were last on — a worktree session seeds its
base repository — so 'n' then Enter spawns another session there.
Matches the TUI's WorktreeToggle, whose Enter also toggles rather than
submitting — otherwise the two clients would disagree on this one
field despite #97 requiring the same rule everywhere else.
A project-box or worktree-choice picker button that isn't yet the
active pick takes the Enter to choose it instead; the next Enter, once
it's active, submits. The project filter resolves to the top filtered
project rather than sending whatever cwd was last set. The raw-cwd
autocomplete's own Enter (accept the highlight) keeps working via
e.defaultPrevented.