dsh-loghud: DeepSeek Harness Local Development Error Monitoring Plugin

`dsh-loghud` is a local development error monitoring web plugin for DeepSeek Harness that organizes scattered terminal errors into deduplicated floating cards. It supports mainstream technology stacks such as Go, Python, Node.js, TypeScript, Java, and Spring, offering features such as error aggregation, search and filtering, a bilingual Chinese-English interface, and draggable, resizable panels. The plugin also provides manually triggered AI diagnostics with sensitive information masking, helping developers efficiently troubleshoot various errors during local debugging.