Feature Request

Current behavior:
The Telegram channel can send reactions (ack reactions work great), but cannot receive reactions that users add to bot messages.

Expected behavior:
When a user reacts to a bot message with an emoji, the bot should receive a message_reaction update and be able to process it.

Context:

• Telegram Bot API 8.0 (Nov 2025) added support for bots to receive reaction updates
• This is a common interaction pattern - users often react instead of typing replies
• Currently missing ~75% of user feedback when they react instead of type

References:

• Bot API 8.0 changelog
• Reactions API docs
• grammY reactions guide

Proposed solution:
Listen for message_reaction and message_reaction_count update types and surface them to the agent context.