[Question] Why does the 'divide' plugin currently not support “host”

### Question

Why does the 'divide' plugin currently not support filtering traffic by host and instead use context path?
not like nginx use server_name，identify http hearder "Host"

Is it due to certain limitations or is it just not developed yet?

Start by reading the divide plugin documentation and implementation to determine why routing uses context paths instead of the HTTP Host header. Done means documenting whether this is a limitation or an undeveloped capability, including any relevant configuration or constraints.

Written by the indexing model from the issue text.