pub fn spawn_request(body: SpawnBody) -> SpawnRequestExpand description
Map a spawn request body onto the core SpawnRequest.
A free function rather than a method because SpawnBody is defined in
prospero-types and an inherent impl can only be written by the defining
crate. Keeping the conversion here — rather than adding a From impl in
prospero-core — preserves ADR 0006’s one-way api → core dependency.