Courtside MVP: engine, web app, Docker + Cloudflare Tunnel deploy, docs

Tournament engine (pools, single/double elimination, standings with proper
tiebreaks, withdrawals, two-court queue with ETAs and alerts), a single-process
Node server with SQLite via node:sqlite and a WebSocket live board, organizer
desk, QR landing page that follows the tournament phase, Dockerfile and
compose with cloudflared, and documentation for deploying and running a day.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01MB7nCCAscYsb3zzkT6LHZi

server/public/manifest.webmanifest

@@ -0,0 +1 @@
+{ "name": "Courtside", "short_name": "Courtside", "start_url": "/", "display": "standalone", "background_color": "#0F1418", "theme_color": "#0F1418", "icons": [{ "src": "/static/favicon.svg", "sizes": "any", "type": "image/svg+xml" }] }