dsh-bioinf-routed: DeepSeek Harness Bioinformatics Skill Routing Plugin

The `dsh-bioinf-routed` plugin addresses context waste caused by the oversized bioinformatics skill library in DeepSeek Harness. It abandons the traditional flat-directory model in favor of a BM25 search-based routing mechanism, enabling agents to retrieve skills on demand. Core features include bilingual skill search, category-tree browsing, web search support, and optional remote GPU task execution. By decoupling resource management from routing logic, the plugin efficiently manages 986 skills and significantly optimizes context utilization.