performance issue and possible design problem

[urbandroid]

Issue

Right now when i add tests directory to context. CPU usage single threaded goes to %100 and i can't type in chat every stroke responds minutes after because ui thread and backend thread are only one thread and indexing takes %100 cpu

what needs to be done:

1.seperate ui thread from backend thread that way even if indexing takes %100 cpu user can write and erase in chat.
2. find out what is causing that much of cpu usage possibly indexing which is weird for 500mb memory usage and fix it or limit usage that way backend thread wont use %100 cpu everytime ui gets a refresh.

Version and model info

aider 0.86.1
openai/deepseek-ai/DeepSeek-V3.2-Exp