Update config and telegram handlers

Fix: ensure UTF-8 encoding for Arabic text in direct IP routing

Fix: add missing json import in telegram_handlers.py

Add payload logging for debugging empty message issue

Fix: remove bold/italic regex stripping Arabic text, add debug logging for payload and AI responses

Fix: remove parse_mode Markdown, add English fallback for empty response, remove duplicate message saving

Refine Telegram DNS fallback to use explicit IP send URL

Improve Telegram delivery with DNS fallback and update REST sample

Harden Telegram message send error handling

Refactor webhook handling and AI call flow

Remove debugging print statements from webhook functions

Add Pydantic models to fix 422 validation errors

Add error handling and logging to webhook endpoints

connect to supabase