feat(points): unlock items, progress bars and skins

Locked items show a progress bar until the goal is reached. Four
CSS-only skins (Pastel, Retro CRT, Cyberpunk, Steam) in skins.css,
light and dark. A skin overrides accent and corners; badges, borders,
frames, effects and game art stay on top. New Platinum shine and
Equalizer effects.

src/components/GameHeroCard.jsx

@@ -21,7 +21,7 @@ import {coverEffect, detailEffect} from '../utils/rewards.js';
 
 const SPEEDRUN_PREFIX = 'https://www.speedrun.com/';
 // The spans of each completed effect decoration; effects.css places them.
-const DETAIL_ELEMENTS = {'fx-detail-gold-shine': 8, 'fx-detail-neon-pulse': 1, 'fx-detail-holo': 1, 'fx-detail-ember': 6};
+const DETAIL_ELEMENTS = {'fx-detail-gold-shine': 8, 'fx-detail-neon-pulse': 1, 'fx-detail-holo': 1, 'fx-detail-ember': 6, 'fx-detail-platinum': 6};
 
 export default function GameHeroCard({game, auditor, profileStyle, onCorrect, onMerge, onHiddenChanged, onProfileStyleSaved}) {
     const {t} = useTranslation();