fix(primo): refine leaderboard labels

feat(primo): clarify purpose and RNAseq boards

feat(primo): refine boards and sortable tables

Rewrite the Space copy: remove em-dashes, soften phrasing

Rank all-NaN entries last; tidy truncated blurbs

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

Open the therapeutic-area axis, add a door for tasks, name Scienta Lab, prefill the contact forms

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

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