dsh-llm-longcat: A Long-Context and Thinking Mode Adapter for DeepSeek Harness

dsh-llm-longcat is a DeepSeek Harness (DSH) plugin designed to integrate the LongCat-2.0 model. It primarily resolves issues in the Harness ecosystem related to long-context (1M token) processing, structured chain-of-thought display, and native tool calling. The plugin supports streaming, multi-turn conversation reasoning review, and API key management via environment variables. Installation requires running a local script, and configuration should note that image input, stop sequences, and binary limits on reasoning strength are not supported.