spec(automation/agent-hive-group): v2 -- typing kept alive, one first speaker on @all, follow-ups, /stop and /mute #6552

The competitor round of the agents' hive (gHashTag/999-multibots-telegraf epic #3641, issues #3646 #3648 #3649 #3651) needs numbers and laws before any host code: typing refresh interval, how many agents answer an @ALL at once, the follow-up window without a tag, the /stop window for bot-to-bot turns, and the /mute window. v2 adds them; the v1 laws stay unchanged so the vendored v1 in the host stays true.