Restructure the flat settingsCategories list into five top-level groups
(General, Appearance, Screens, Productivity, Add-ons), each a collapsible
nav section with persisted open/closed state. Consolidate the six
single-toggle modern_* categories (posts/pages/media/users/comments/
plugins) into one "Content tables" screen. Search now matches on group +
category + subtitle and hides empty groups. Field definitions, save flow,
and setting keys are unchanged.
settingsConfig.js exports settingsGroups plus a flattened settingsCategories
for default-seeding and deep-link lookups.
(package-lock.json: version field synced 2.16.0 -> 3.1.0 to match package.json.)
Co-Authored-By: Claude Opus 4.8 <[email protected]>
