Player grid: gate skull on availability, not on round-final survival

Apply Tailwind v4 shorthand fixes; narrow eslint disables to real FPs

Add eslint with eslint-plugin-better-tailwindcss

Nerfies-style home, paper-style match header, prettier setup, dataset README

Cut first-paint payload: per-icon phosphor imports + WebP radars + non-sticky header

Initial CS2 render dataset viewer