Rank all-NaN entries last; tidy truncated blurbs

Cohort-aware counts, name ownership, single-fetch render, honest Mean labelling

About: say what the archives actually say about reuse, drop the unverified licence list

PRIMO Space redesign: baselines, open boards, Contribute tab, quickstart, PRIMO identity

MTEB-style board grid: dark theme, per-board leaderboards

Tasks as a table, overview moved to About, archives instead of accessions

Redesign: Home / Tasks / Submit / About, disease + task-family filters, explore board