Make web app mobile-friendly: responsive CSS, touch drawing, safe areas, keyboard handling

Restore samples.json loading for AI drawing

Fix AI toggle no-op, add (beta) label

Restore AI Player toggle and QuickDraw bar UI

Restore QuickDraw AI model files and TF.js CDN script

Clean up untracked files, gitignore samples.js and xss-test.html

Fix health check: use PORT 7860 to match HF Spaces default, add /health endpoint

Use node:20-alpine for faster Docker build (smaller image)

Remove unused QuickDraw samples.json (1MB)

Optimize HF Space startup: fix port, add .dockerignore, remove unused samples.json load

Switch from Docker to Node.js SDK for faster HF Space startup

Remove TensorFlow.js CDN script (no longer needed)

Remove AI model files to speed up loading

Remove test file and unused samples.js

Remove AI player and QuickDraw recognition

Replace admin system with TOTP mod system, defer QuickDraw model loading, fix teams-mode sync, add AI-only-when-alone guard

Rename Readme.md to README.md

Add HF Space config to README

Initial commit: Skrawl multiplayer drawing game with QuickDraw AI recognition