dsh-score-rank: Score Percentile Calculation Tool

dsh-score-rank is a plugin for DeepSeek Harness (DSH) that calculates score percentiles and provides precise statistical results. It is implemented in Node.js, requires no network dependencies, and must meet the version requirements for `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`. Once installed, the `score_rank` tool can be invoked directly within the conversation context.