Single RemoteError with a merge-extensible, domain-prefixed code map;
owners throw at the failure point; streams surface marked failures;
clients consume ctx.remote directly with isRemoteFailure as the only
discrimination point and construct no failure instances.
- Map an absent persistence backend to queue-item-not-found for updateQueue.
- Re-fence the published Agent after shared cold resume settles.
- Document cold queue activation and regenerate its public API catalog.
- Supersede the attached-only claim in the Web subagent conversations note.
Render reconstructable system prompts at each request-series boundary, preserve series declarations through pre-step wrappers, and keep the presentation and replay snapshots aligned across clients.