Frequent UI Freezes (Beach Ball) during Agent Chat sessions on M4 Mac

**Description**
I am experiencing frequent application hangs (spinning wait cursor/beach ball) when using the Agent Chat feature in CopilotForXcode. After a period of active use, the interface becomes unresponsive, necessitating a restart of Xcode to restore functionality.

**Environment**
Hardware: MacBook Air M4

Memory: 16GB RAM

macOS Version: [macOS 26.4]

Xcode Version: [Xcode 26.4]

CopilotForXcode Version: [v0.47.0]

**Steps to Reproduce**
Open Xcode and initiate a session with CopilotForXcode.

Engage in a prolonged conversation or multiple successive queries within the Agent Chat.

After some time, the UI freezes, and the "beach ball" appears.

Chat Window remains unresponsive for long time.

**Observations**
The issue seems to trigger more frequently during long chat histories.

System memory pressure appears manageable, but the communication between the agent and Xcode seems to dead-lock the main thread.

Restarting Xcode is currently the only workaround.

**Additional Context**
I am looking for advice on whether this is a known memory leak or a threading issue, and if there are any specific settings (e.g., chat history limits or model configurations) that can mitigate this behavior on 16GB RAM systems.