- sidebar nav grouped under Shop/Content/Settings section headers with
subtle uppercase labels (#105)
- custom page settings now show inline in a collapsible panel within the
editor instead of navigating away to a separate page (#107)
- admin editor preview loads real products and categories from the DB,
falling back to PreviewData only on fresh installs (#108)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>