dsh-web-search-provider: Improving DSH web search with model provider server-side search

dsh-web-search-provider is an open-source plugin maintained by hiyms for the DeepSeek Harness (DSH) community, licensed under the MIT License. It implements web search by invoking the model provider's server-side search capabilities (such as the OpenAI Responses API or Anthropic-compatible Messages API), thereby bypassing DSH's built-in web_search toolchain. The plugin can coexist with existing search plugins and supports directly viewing or searching URL page content in the OpenAI Responses API environment. Usage requires that the provider supports web search capabilities. After installation, it is required to be in co...