allow selecting session with /tui/select-session #2776

Now you can open list of sessions with /tui/open-sessions but there is no way to select one.

Use case: I want to create session programatically via sdk and then open it right away

const { data: session } = await client.session.create({
   body: { titile: "My session" }
})

await client.tui.selectSession({
  body: { id: session.id },
})

Or alternatively allow running opencode attach <server_url> -s <session_id> with a session id