Wraps the word "assistant" in `accentGreen` (#3fba50, added in #2103) across the six channel adapters that ask "What should your assistant be called?" — Discord, iMessage, Signal, Slack, Telegram, WhatsApp. Mirrors the green emphasis on "you" in the display-name prompt: the green word names the subject of the question (assistant vs operator) so the operator parses it at a glance.