This project is an independent community plugin for DeepSeek Harness. It is not affiliated with DeepSeek or OpenAI. Host transport, completed-turn single-flight, and client lifetime design are derived from Tieboyh/dsh-next-step (MIT), commit 4bbdcef6332cdf685cc0decd4ea29177b40348fb (version 0.5.2): https://github.com/Tieboyh/dsh-next-step Copyright (c) 2026 Tieboyh. Original MIT terms are retained in LICENSE. Context selection, prediction prompt and output guards, settings, client state controller, and revision-guarded editor integration were rewritten for this fork. The prompt optimizer from the upstream project is not included. Other repositories were inspected for comparison; no code from those projects is included. Host communication and editor contracts follow the published DeepSeek Harness 0.2.1-rc.2 package interfaces.