Function agent_route_name 

pub fn agent_route_name(name: &str) -> String

The name an agent is registered and addressed by: AGENTMUX_AGENT_ID, the registry’s display binding, a message’s target. A valid agent id stays as it is, natural casing included (Agent2, which PR titles and git authors carry); anything else gets definition_slug’s rule without lowercasing, so a fork’s automatic name Loap #3 routes as Loap-3 instead of being refused (REPORT_FORK_AGENT_ISOLATION_2026_10_12.md F3). A name with an @ is an address (agent2@narko), not a name: it is left as it is, so it fails as an id instead of resolving to a local agent called agent2-narko.