Merge branch 'm5/marble' into codex/owner/grp_discord_joke-app

# Conflicts:
#	apps/web/src/games/registry.ts
#	apps/web/src/lib/catalog-ui.ts
#	e2e/games.e2e.ts
#	packages/games/src/index.ts
#	packages/shared/src/catalog.ts

apps/web/src/lib/catalog-ui.ts

@@ -13,6 +13,7 @@ export const GAME_ICON: Record<string, string> = {
   rummikub: '🔢',
   'davinci-code': '🔐',
   gostop: '🌸',
+  marble: '🏙️',
 };
 
 /** Shown on the home screen so users know what's coming (docs/12-roadmap.md). */