WIP: v2 cleanup checkpoint before merging origin/main

Cross-source dedup, plotbox polish, pretty URLs, eval page fallbacks

Consolidate hierarchy terminology + handle v2 hierarchy shape

Add plain-language captions and mode-aware framing for policy readers

Add interpretive signals, corpus dashboard, and slice browser

improve ux

Improve eval/model UX, lite data paths, and leaderboard clarity

Refresh eval cards UI and backend data flow

fix bugs

ux changes

fix: align reporting cues and developer slugs

feat: refine model and benchmark exploration

redesigned

rename benchmark to eval

Refactor: Update benchmarks with realistic data, fix UI stats, and improve About page

new ux