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장애 조치가 포함된 2단계 모델 회로 차단기: 반복된 요청 실패 후 모델 또는 프로바이더 전체를 차단하고 다음 요청을 설정된 폴백으로 라우팅

Model routing groups for the session model picker: bind a group to a session, and once a model exhausts every retry policy the plugin records the failure with its error code, switches to the next usable model in the group and continues the same turn. Groups carry per-model priority, Beijing-time active windows and expiry dates; subagents inherit their parent session's group and can also pick models or bind their own; models served by dsh-our-free-model retry another account before failing over.

Model failover for DeepSeek Harness: pick one or more providers and the pool becomes every model inside them; when a request fails (rate limit, quota, timeout, server or transport error) the next untried model in the pool retries automatically, and the original error surfaces once the pool is exhausted. Configure from a seat beside the composer model picker or the model_failover tool, with no restart needed.

Two-level model routing: pick the best model group first, then the best channel within that model; a failure switches channel before switching model. Preference mode pins one model across its channels, a status bar under the composer shows the live model, channel health and the day's token usage, and a speed/intelligence report can be imported as the routing prior. Exposes a model_orchestrator tool and a /route command.

Model failover router that queues all connected DSH models, retries with continue text on failure, switches to next model, and quarantines failing models for the day.