- protocol: isDSHRemoteGatewayError -> isDSHRemoteError (the class is
protocol-wide, not Gateway-specific); remoteErrorOf drops its
instanceof Error precondition and tests the marker plus a string code
structurally, so a marked failure from another realm no longer reads
as a local defect.
- session-controller: the live-follow packed-record protocol violation
now throws a marked RemoteError('gateway/internal'), landing the
session in openState=error instead of an unhandled rejection;
pinned at the transport and session levels.
- util-time: correct the invariant companion's @module name.
- regenerate the tool-cordis catalog for the marker rename.
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.
A steer or follow-up accepted while a turn is closing is now claimed by a
fresh turn at the driver's clean exit instead of stranding in the inbox;
cancellation and pre-step rejection still park accepted work. Continuable
subagent follow-ups accept image parts: the wire is upload-shaped, the Host
admits and persists each batch before inbox acceptance, and delivery is
refused when the child model declines image input. The queue dock renders
durable image thumbnails instead of an [image] text marker.
Fixes#3186
