Hey, code viewing in the Agents Window is supported. A side panel opens with files and a diff or preview, and you can click a file in the changes list to see its contents.
What’s not supported yet is a full IDE experience inside Glass, like symbol navigation, code search, or inline editing. For that, you need to switch to the Editor Window with Cmd+E or open a separate window with Cmd+Shift+N.
If you meant full editing and navigation, that’s a known gap. There are a few similar threads where you can support the request with a vote or comment: