### GitHub Copilot for Xcode 0.48.0

**🚀 Highlights**

- **Context Window and Auto Compress**: Track context token usage directly from the chat input and automatically compact conversation history to save tokens.
- **Xcode MCP Server Setup**: Install and connect Xcode's built-in MCP server directly from settings.
- **General Availability**: Custom agents and the Auto model are now generally available.

**💪 Changes**

- Removed support for macOS 12.
- Improved UI for model picker tooltips.

**🛠️ Bug Fixes**

- Fixed an issue where GPT-5.4 requests could return a 400 error.
- Fixed an issue where the MCP allowlist did not work correctly.