True for group/channel/thread conversations; DMs bypass policy.
Platform-native sender ID.
Platform marks the sender as a bot/automated account.
Mentioned platform user IDs, if the adapter extracts them.
Adapter reliably populates mentions.
Optional botThe agent's own platform user ID (self-echo guard), when known.
Optional bindingOwner from the binding config, when present.
Inputs the evaluator needs about one inbound message.