fn forget_mcp_servers(owner: u64, broker: Option<&Broker>, block_id: &str)Expand description
The CLI is gone, so its MCP servers are too (backend::mcp_observed),
unless a newer spawn already reports its own. Here, not at the reader’s
end of input: a reader can be aborted unfinished (settle_reader_tasks),
and a descendant holding stdout open keeps it from ending at all.