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

feat: improve UX and player tracking

fix: resolve all type errors from spectrum redesign

feat(spark): update admin panel and registration for spectrum

feat: add Spark Debate Arena tracking to admin analytics panel

feat: add Spark Micro-Debate Arena

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

feat: per-session location tracking + admin player intelligence

feat: player signup metadata tracking + shop purchase visual feedback

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

fix: implement player name change DB sync and policies

feat: implement cosmic shop logic, db functions, and policies for purchasing and equipping cosmetics

fix: auto-heal old string guest IDs to valid UUIDs and connect trophy room to real DB table

fix: resolve TS build errors related to outdated game_sessions schema definitions

fix: resolve foreign key uuid issues preventing leaderboard submission & guarantee true randomness when fetching question batches

fix: apply v2 migrations to db and update leaderboard UI/queries to match new schema

feat: add room-based multiplayer, Game Night, and 124 new questions

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

feat: fix question system + add HF Spaces deployment

feat: add cosmetic definitions, theme system, queries, and CosmeticProvider

feat: add achievement definitions, checker engine, coin calculator, and queries

feat: widen query type signatures to GameMode, add score normalization

feat: add platform features schema migration (achievements, cosmetics, star coins)

feat: add Supabase client guard and player sync

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

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

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