Git history graph does not show branches since bare repo migration

[JohnRDOrazio]

Problem

Since switching to bare git repositories (pygit2), the git history graph in the revision/history view no longer shows branches. All commits appear as a linear list without branch structure.

Expected behavior

The history graph should visualize branch points, merge commits, and parallel branches — similar to git log --graph.

Likely cause

The bare repo migration may have changed how commit history and refs are returned from the API, or the frontend graph rendering may not be receiving the branch/ref metadata it needs.

Investigation areas

• Backend: How ontokit-api returns commit history for bare repos — check if branch refs and parent commits are included
• Frontend: How the history/revision components render the graph — check if they expect data that's no longer provided