Collapses the unreleased daemon controls into a single interactive command.
`codegraph daemon` (alias `daemons`) opens an arrow-key picker (current project's
daemon first, pre-selected), enter stops it, or pick "Stop all"; non-TTY prints a
plain list. Removes stop/list/ps; reuses the unchanged daemon-registry machinery;
the pick->stop loop is in daemon-manager.ts behind an injectable select (unit
tested). Validated live on macOS/Linux (real clack picker driven via pty) and
Windows (real runDaemonPicker + stopDaemonAt against a real daemon). Closes#845
follow-up.
