Reviewed the code browser file tree, commit history list, and per-file
diff view in light and dark mode. The diff view already does proper
git-style red/green color-coding in a side-by-side before/after layout
and holds up cleanly in dark mode; the file tree and commit list are
already consistent with the rest of the app. Nothing to fix here.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>