Neon Nexus presentation (provider-game-demo)

Play-money presentation for Neon Nexus. The legacy internal game_id=orbit-breaker remains unchanged for launch and wallet compatibility.

Authority split

• Server (services/orbit-games) owns immutable outcomes
• Client (demos/apps/provider-game-demo) only presents POST /v1/rounds results
• Spin speed / fast-stop / autoplay change timing only

Client structure

src/game/NeonNexusGame.tsx
src/game/neon/
  SlotRenderer.ts      # Pixi reel strip presentation
  layout.ts            # centralized 5×4 / 5×5 geometry
  roundState.ts        # READY → … → PRESENTING_WIN → READY
  audio.ts             # intro crossfade, mute persistence
  viewport.ts          # fullscreen, incl. iOS fallback + operator frame request
  winPresentation.ts   # return / standard / big / epic thresholds
public/neon-nexus/     # symbols, music, CSS, math-config, licenses

Win tiers

Tier	Condition	Full-screen celebration
Return	total <= bet	No
Standard	> 1× and < 10×	Yes
Big	>= 10× and < 50×	Yes
Epic	>= 50×	Yes

Motion

Phones report prefers-reduced-motion: reduce for Reduce Motion and Low Power Mode, which is why the panel's Motion setting (auto / full / minimal) overrides it. Reduced motion removes movement, not information: reel travel shortens and anticipation drops, and win screens still open — held static and longer, since there is no count-up to watch. Only minimal (or spin speed instant) lands the grid with no travel at all.

The effective choice is mirrored onto <html class="app--reduced-motion"> so CSS keyframes follow the player's override rather than the media query.

Commands

cd demos/apps/provider-game-demo
npm run dev
npm test
npm run build   # → dist/
npm run simulate

See also docs/neon-nexus-math.md, docs/neon-nexus-integration.md, and demos/apps/provider-game-demo/INTEGRATION.md.