Custom pr title and desp rule in background agent

BA id great work, but it will write pr title and desp once.

One is that what it wrote is actually just my first instruction, the other is that it is not very appropriate and does not conform to the specifications in the warehouse, and the third is that it only uses English by default. This makes me very uncomfortable when programming my mobile phone.

hi @Cheez_One and thank you for your feature request.

We are regularly improving Background Agent and will consider your request.