High CPU Usage (100%) from copilot-language-server-arm64 process

[miyazaki2048]

Describe the bug
The copilot-language-server-arm64 process is causing high CPU usage (100%) during normal operation in Xcode. I've taken a process sample which shows excessive CPU consumption by this language server process.

Versions

• Copilot for Xcode: 0.35.0 (Language Server Version: 1.321.0)
• Xcode: Version 16.3 (16E140)
• macOS: 15.5 (24F74)

Steps to reproduce

1. Start coding/editing in Xcode and ask questions to Copilot in Chinese characters
2. Check Activity Monitor
3. The copilot-language-server-arm64 process consistently shows ~100% CPU usage

Screenshots

Logs

copilot-language-server-arm64.log

[zenangst]

Seems related to #298