Function runtime_engine_registration 

pub fn runtime_engine_registration(
    backend: &CpuBackend,
) -> Result<EngineRegistration, RuntimeConfigError>

Build a runtime engine registration for a CpuBackend.

The registration exposes CPU direct core preparation capabilities, CPU cache ownership hooks, and the runtime-owned tensor backend execution bridge.

Errors

Returns [RuntimeConfigError] if one of the built-in CPU runtime identifiers violates runtime validation or if the registration is internally invalid.