Shared Vocabulary System

Telegram webhook callback URL: https://vocab.home-ulio.uk/api/webhooks/telegram

WhatsApp fallback callback URL: https://vocab.home-ulio.uk/api/webhooks/whatsapp

Default pair name: Our Shared Vocabulary

Reminder daily limit: 2

1. Create a Telegram bot via BotFather and put the token in `TELEGRAM_BOT_TOKEN`.
2. Set `NEXT_PUBLIC_APP_URL` to your public app URL.
3. Set `TELEGRAM_WEBHOOK_SECRET` and register the webhook from the URL below.
4. Fill the Supabase and OpenAI environment variables.
5. Run all Supabase SQL migrations before enabling live traffic.

Register webhook: https://vocab.home-ulio.uk/api/webhooks/telegram?action=set-webhook&token=<TELEGRAM_WEBHOOK_SECRET>