Update relay server defaults and repo links

- Update index.html links to repo.anhonesthost.net
- Adjust rate limit defaults in .env.example

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

macropad-relay/.env.example

@@ -13,8 +13,8 @@ BCRYPT_ROUNDS=10
 SESSION_ID_LENGTH=6
 
 # Rate limiting
-RATE_LIMIT_WINDOW_MS=900000
-RATE_LIMIT_MAX=100
+RATE_LIMIT_WINDOW_MS=90
+RATE_LIMIT_MAX=1024
 
 # WebSocket timeouts (in milliseconds)
 PING_INTERVAL=30000