AsRawDerivation

Server-adapter derivation: builds an AsRaw[RawRpc[Raw], Real] that turns a real trait instance into a transport-facing RawRpc. The generated RawRpc[Raw] dispatches each incoming RawInvocation by rpcName, decodes every argument to its exact declared parameter type via a summoned AsReal[Raw, paramType], calls halotukozak.made.Done.invoke, and encodes the result back to Raw.

The fire/call/get match arms are partitioned by arity — only fire-arity ops appear in fire, and so on. An rpcName outside an arity's known set is rejected explicitly (no silent no-op), mirroring commons' unknown-method handling.