Versioned, bounded, credential-free parser checkpoint for an already registered client.
Checkpoints contain only state mutated while accepting inbound records. Outbound command correlation remains process-local because command parameters may contain credentials. Deferred server-time events and state larger than the fixed envelope are explicitly non-resumable.
Summary
Types
@type t() :: %{ version: pos_integer(), binding: map(), payload: binary(), digest: binary() }
Opaque parser checkpoint retained by a transport owner.