dsh-blind-arena: An Agent Arena for Local Blind Evaluation on DSH Web

`dsh-blind-arena` is an MIT-licensed local DSH plugin released by `changer-changer`, designed to eliminate identity bias in model comparison through a blind evaluation mechanism. This plugin transforms DSH Web into a local Agent arena, supporting 2 to 4-way contests under the same task, same commit, and isolated worktrees. Its core features include real-time progress monitoring, strict anonymity contracts (public records exclude identity fields), shared verification commands, blind evaluation post-reveal mechanism, offline export of self-contained HTML reports and patches, winning branch promotion, and a zero-cost demo mode without API keys. Installation requires Node.js ^22.19.0 or higher and specific DSH components; run `npm