Agent-to-agent message chains now stop themselves after a set number of self-hops or total posts
A new internal tracker counts how many messages each agent sends to a given recipient, and how many messages have been sent in total since your last turn. When either count crosses a limit (maxSelfHops for a single recipient, or maxChainLength overall), further posts in that chain are blocked.
This extends the earlier fix that stopped message-forwarding to Claude Desktop from looping forever, applying the same kind of chain-length limit more generally to agent-to-agent messages. It prevents agents from getting stuck sending messages back and forth indefinitely.