Kotlin data classes mirroring maestro-protocol's wire types (Session,
CatalogEvent, ClientControl, structured-session projections, etc.),
@Serializable with kotlinx-serialization. ActivityState and NameSource
carry custom lenient deserializers matching the Rust side's forward-
compat behavior: an unknown variant degrades to the neutral default
instead of failing the whole payload.
Verified against fixtures mirrored from maestro-protocol's own test
suite (tag placement, snake_case renames, legacy-payload defaults).
Miguel Palhas
6ccd79baa0