Document how to find Telegram and Discord user IDs for pre-approving users.
Added comprehensive instructions including:
- Environment variables for TELEGRAM_ALLOWED_USERS and DISCORD_ALLOWED_USERS
- Step-by-step guide to discover user IDs via pairing messages
- Alternative methods (@userinfobot for Telegram, Developer Mode for Discord)
- Updated docker-compose and .env examples
This completes the auto-approval feature documentation for Phala Cloud
deployments, allowing users to skip the manual pairing step.
