Stable mailbox-delivery metadata for direct session subscribers.
The tagged event atom is configurable adapter detail. Higher-level wrappers
should prefer their own relay envelope or CliSubprocessCore.Session
extraction helpers over hard-coded assumptions about the default tag.
Summary
Types
@type t() :: %CliSubprocessCore.Session.Delivery{ legacy_message: :session_event, tagged_event_tag: atom(), tagged_payload: :event }