dsh-hotspots: DeepSeek Harness Real-Time Hotspot Aggregation Plugin

`dsh-hotspots` is a sidebar hot-topics plugin for DeepSeek Harness, supporting two major sections: major AI events and engineering hotspots. It fetches data by making browser Loopback requests to the host process's `web.search`, ensuring security while reusing existing search capabilities. Core features include three-view switching, local keyword/source chip filtering, read-state management, and error diagnostics. Once installed, the plugin appears in the sidebar and uses the ModSearch Firecrawl free tier by default (limited to 1,000 requests per month), with support for configuring third-party APIs. Its lightweight architecture balances real-time updates with efficient usage.