Trait SpawnerFactoryKind 

pub trait SpawnerFactoryKind: SpawnerFactory {
    type Worker: Worker;

    const KIND: AgentKind;
}

Companion trait that carries the type-side source of truth for the Adapter ↔ AgentKind correspondence.

The base SpawnerFactory trait deliberately does not carry an associated const so it stays dyn-compatible — that is, so it can be stored and dispatched as Arc<dyn SpawnerFactory>. This companion trait splits const KIND: AgentKind out, and SpawnerRegistry::register uses F::KIND as the HashMap key. That physically removes the string-lookup failure mode at the type layer.

The three built-in factories (Shell / InProc / Operator) implement this. Extension backends (say, AgentBlockSpawnerFactory) follow the same explicit two-step recipe: add a new AgentKind variant and implement this trait.

Required Associated Constants

const KIND: AgentKind

The AgentKind this factory handles — used as the HashMap key by SpawnerRegistry::register.

Required Associated Types

type Worker: Worker

The concrete Worker type produced by this AgentKind — this binds the type chain all the way from AgentKind down to Worker. Every factory declares it so the AgentKind → Worker mapping is explicit across all four layers. It is the source of truth for preserving the concrete type right up until SpawnerAdapter::spawn erases it into Box<dyn Worker>.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl SpawnerFactoryKind for AgentBlockInProcessSpawnerFactory

const KIND: AgentKind = crate::blueprint::AgentKind::AgentBlock

type Worker = AgentBlockWorker

impl SpawnerFactoryKind for LuaInProcessSpawnerFactory

const KIND: AgentKind = AgentKind::Lua

type Worker = LuaWorker

impl SpawnerFactoryKind for OperatorSpawnerFactory

const KIND: AgentKind = AgentKind::Operator

type Worker = OperatorWorker

impl SpawnerFactoryKind for RustFnInProcessSpawnerFactory

const KIND: AgentKind = AgentKind::RustFn

type Worker = RustFnWorker

impl SpawnerFactoryKind for SubprocessProcessSpawnerFactory

const KIND: AgentKind = AgentKind::Subprocess

type Worker = ProcessWorker