Rate limit and chat window issues

**Describe the bug**

I have been experiencing a couple of issues that are extremely annoying. The first issue I have is that interations keep stopping due to a supposed rate limit being reached, but as a Github Copilot Pro+ subscriber, I've never had this issue under Visual Studio Code, only on Xcode. I can usually quit out of Xcode, and restart and things are fine again.

The second issue is that the chat window appears to go "blank" or rather, it reverts back to the original screen before starting a new chat, although copilot appears to be working in the background. Sometimes the chat randomly comes back, sometimes not.

I also noticed that when copilot is editing a source code file, and I'm working elsewhere, the source code window "steals" my keyboard inputs and I end up screwing up whatever copilot was editing.

**Versions**
- Copilot for Xcode: 0.47.0
- Xcode: 26.3
- macOS: 26.3.1

**Steps to reproduce**
Rate Limit Issue:
1. Be me, working as normal, then get hit with a rate limit error.

Blank Chat Window:
1. Same as above.

Source Code Editor Issue:
1. Be in the middle of an iteration that requires copilot to edit source code, and have any other application open at the same time.
2. try typing in your other application--if the source code window goes active automatically, whatever you're typing is captured by the source code editor instead of the other app.

**Screenshots**

This is the screen that the chat reverts to randomly:

Rate limit reached:

**Logs**

[github-copilot-for-xcode.log](https://github.com/user-attachments/files/26126972/github-copilot-for-xcode.log)

**Additional context**