feat: remove Supabase, bundle questions locally, use JSON DB + API

fix: batch of 5 stability fixes

fix(spark): Batches 2 + 3 — atomic ELO, real DB IDs, polish

fix: leaderboard tracking, score bugs, mobile admin, OG image

feat: improve UX and player tracking

feat: cross-device account linking via 6-char sync code

feat: easter eggs — triple-click admin access + TRIVIAMASTER name unlock

fix(results): Play Again forces full navigation to remount game state

fix(cosmetics): wire all four cosmetic categories to their visible elements

Fix stale player ID causing leaderboard/coins/achievements to fail

fix: prevent double leaderboard submissions with useRef guard

refactor: unify home page flow to eliminate redundant landing screen and use modal name entry

Fix Nebula Glide controls, leaderboard spam, and stale room codes

Fix Challenge Me 3-round system + improve Nebula Arcade drawer

feat: redesign landing page with floating tiles, hero pillars, scoring transparency

fix: address code review findings (RLS delete policy, Starfield context, achievement toasts)

feat: apply equipped cosmetics to UI components via CSS custom properties

feat: add player progress hook with achievement + coin integration in results screens

feat: wire game results to Supabase with async question loading

feat: enhance answer feedback with green/red glow, icons, and floating text

feat: separate Triviaverse and Nebula Arcade sections on home page

fix: address code review findings (AudioContext leak, stale closure, unused imports)

feat: add MiniGameResultsScreen, MiniGameHeader, and MiniGamesGrid components

feat: add mini-game shared infrastructure (types, registry, high-scores)

feat: upgrade all pages with Lucide icons, glow effects, and confetti

feat: upgrade ResultsScreen with confetti, trophy icon, and glass-card glow

feat: upgrade game UI components with Lucide icons and glass-card styling

feat: polish — page transitions, sound integration, screen shake, remaining files

feat: results screen, leaderboard page, procedural sound system

fix: spec compliance — restore emojis, fix timer race condition, fix query types

feat: game UI components + Quick Fire gameplay with timer, scoring, and results