dsh-provider-hub: A DSH Plugin for One-Click Provider Addition

`dddmuc/dsh-provider-hub` is a plugin for DeepSeek Harness designed to simplify provider configuration through UI cards and CLI tools. It includes 50+ built-in presets, supports one-click writing of routing and credentials, works with OpenAI- and Anthropic-compatible APIs, and can directly configure multiple applications such as WorkBuddy, OpenCode, and cc-switch. With an interactive wizard and environment variable Key reuse, users can easily obtain a Key in DSH Web and enable services, or use CLI tools to manage local application settings.