- Applied chat_boost event pattern to all 20 Telegram event handlers
- All event classes now inherit from both TelegramUpdateEvent and Event
- Preserved custom _build_variables implementations where present (e.g., message_received.py)
- Simple events now follow the minimal pattern with just update_key defined
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>