Add preview color scheme controls and simplify project grouping (#4385)

Co-authored-by: codex <codex@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
79fe11bc1cJulius Marminge committed on 7/23/2026, 9:35:40 PM· committed by GitHubparentb3e5131
16 files changedLine totals unavailable