DeepSeek Harness Local Network Proxy Fallback Plugin

`dsh-net-proxy-plugin` is an open-source plugin maintained by minatoAI, designed to address network issues when DeepSeek Harness (DSH) cannot reach overseas websites directly. Instead of embedding a proxy service, the plugin automatically scans system proxy configurations and local ports to test connectivity. When direct connections fail, it takes over `fetch` requests within the process and injects environment variables into child processes such as `git` and `pnpm` to ensure network access remains available. It supports automatic decision-making (activated by default when direct connections fail) and manual refreshing, and provides a `net-proxy` `WebFetchProvider` for compatibility with the `web_fetch` tool, without modifying system proxy settings.