Three density modes: Overview (~3 min), Standard (~12 min), Deep (~25 min).
Applied to researcher.html — 7 sections tagged with data-reading-level.
Persists user preference in localStorage. Auto-injects toggle UI.
Reusable component for architectural-alignment papers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
