perf(mobile): highlight source files in small batches that keep grammar state (#16729)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
33afd5a5aaJulius Marminge committed on 10/8/2026, 5:48:58 AM· committed by GitHubparentb402f5f
2 files changedLine totals unavailable