- hermes-ink: export `withInkSuspended()` + `useExternalProcess()` that
pause/resume Ink around an arbitrary external process (built on the
existing enterAlternateScreen/exitAlternateScreen plumbing)
- tui: `launchHermesCommand(args)` spawns the `hermes` binary with
inherited stdio, with `HERMES_BIN` override for non-standard launches
- tui: `/model` and `/setup` slash commands invoke the CLI wizards
in-place, then re-preflight `setup.status` and auto-start a session on
success — no more exit-and-relaunch to finish first-run setup
- setup panel now advertises those slashes instead of only pointing
users back at the shell
a82097e7a2