Add Cloudflare Pages deployment support
- Add custom DID resolvers for Cloudflare Workers (did:plc and did:web)
- Simplify db.ts to D1-only (removes better-sqlite3 for Workers compatibility)
- Remove dotenv dependency from hooks (not needed in Cloudflare)
- Pass platform context to OAuth endpoints for env var access
- Add deploy script and npm run deploy command
- Add backfill script to sync games from UFOS/Constellation to D1
- Configure D1 database binding in wrangler.toml
- Set PUBLIC_BASE_URL to go.sky.boo
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>