- Document DM vs server channel interaction modes
- Explain @mention requirement and how to select bot user vs role
- Add DISCORD_REQUIRE_MENTION and DISCORD_FREE_RESPONSE_CHANNELS config
- Add troubleshooting entry for bot not responding in server channels
Cover CLI voice mode, Telegram/Discord auto voice reply, and Discord
voice channel support. Include setup guide with bot permissions, OAuth2
invite URL, privileged intents, system dependencies, and Python packages.
Update discord.md voice messages section with correct STT key reference.