Function resolve_command_name_or_alias 

pub fn resolve_command_name_or_alias(
    registry: &CommandRegistry,
    name: &str,
) -> Option<CommandId>

Resolve a user-typed command spelling against the registry, trying the canonical form first then falling back to the alias table. Mirrors parse’s two-stage resolution so introspection (:describe-command, :apropos) accepts both forms a user can type at : (canonical ex:write or alias w / write).

Relocated to lattice-host in 5.5.F.2 alongside the :describe-command builder that depends on it.