Type Alias AgentIdentityConfirmer 

pub type AgentIdentityConfirmer = Arc<dyn Fn(&str) -> Option<String> + Send + Sync>;

Function type for querying a block’s own live, spawn-time-captured jekt identity — an independent source of truth for inject_message_inner’s recipient-identity check, deliberately NOT derived from Handler’s own uid_to_block/name_to_blocks/agent_info maps (see Controller::agent_id’s doc comment for why checking a registry against itself would be a tautology). Given block_id, returns Some(agent_id) if that block’s controller has a captured identity, None if it doesn’t (a non-agent controller, or a controller type that doesn’t implement agent_id()) — None is treated as “unverifiable,” not “confirmed absent,” so delivery proceeds unaffected when no positive check is possible.

Aliased Type

pub struct AgentIdentityConfirmer { /* private fields */ }