- Fix TelegramUpdate struct to handle message and edited_message properly
- Fix chat_id saving for messages without text
- Add comprehensive logging for webhook registration
- Improve error handling and diagnostics
- Add telegram_integrations table to store bot token and chat_id
- Add Integrations tab with Todoist and Telegram integration screens
- Remove TELEGRAM_BOT_TOKEN and TELEGRAM_CHAT_ID from env variables
- All Telegram configuration now done through UI
- Telegram webhook registration happens when user saves bot token
- Rename TELEGRAM_WEBHOOK_BASE_URL to WEBHOOK_BASE_URL
