Powler Lanes — playable PWA prototype

Files:
- index.html: game, styling, and game logic
- manifest.json: install metadata
- sw.js: basic offline caching
- icon.svg: app icon

Run locally:
1. Serve this folder from localhost (not file://), for example:
   python -m http.server 8000
2. Open http://localhost:8000 in a modern browser.

Install:
PWAs require HTTPS on a public host or localhost for installation/service workers.
Upload the folder contents to any static HTTPS host.

Prototype notes:
- Glacier Run: movement, AI opponents, shove/dash, ring-out and rounds.
- Powler Lanes: aiming/power, bowling roll animation, pin collisions and frame/score loop.
These are early playable prototypes; online multiplayer, persistent accounts, advanced physics,
accessibility options, and production QA are not included.

V2: shared original SVG animal artwork, rendered in both games; Glacier Run shrinking ice arena. These are still 2D prototypes, not the full 3D concept artwork.
