Changes
The Changes tab lists what has changed in the project's repository, grouped as git groups them: merge conflicts first, then staged, then unstaged, each with a count and the added and removed line counts per file. It polls, so it keeps up with an agent mid-edit.
Click a row for a side-by-side diff of that file: the index on one side, the working tree on the other. The working-tree side is editable, and Save writes the file.
factorai is read-only about git. It shows you what the agent did; it does not stage, discard or commit. The terminal beside it does that better, and so does the agent.