DeepSeek Harness Plugin: OpenAI-Compatible Server Protocol Discovery Tool

`dsh-compat-probe` is a plugin for DeepSeek Harness designed to address runtime crashes caused by discrepancies between server documentation and the actual OpenAI-compatible protocol. The tool sends five micro fixture requests, generates a "protocol card," and accurately detects whether the server is online, supports streaming, and accepts parameters such as `max_tokens`. It requires no additional dependencies, supports offline testing, and probes only the loopback address by default to ensure safety, helping developers avoid parameter errors or connection exceptions.