[Feature]: Model Routing Per topic

[azharkov78]

Preflight Checklist

• I have searched existing requests and this hasn't been proposed yet
• If this request came from a chat session issue, I included relevant session context and redacted secrets

Problem statement

Routint work only per channels, not topics in Telegram

Proposed solution

Use different models for topics

Alternatives considered

No response

Category

Gateway / Web UI

How important is this to your workflow?

Medium — would be very helpful

Additional context

No response

Chat session context (if applicable)