- New dedicated Content Manager tab (WordPress-like layout) with:
- Stats dashboard (published, drafts, categories, quizzes, attempts)
- Sidebar with category tree and filter controls (status, category)
- Table-style content list with search
- Full-page editor with title bar, meta fields, body editor, quiz builder
- Content Manager visible only for admin and moderator roles in sidebar
- Removed CMS from admin panel (admin panel is admin-only again)
- Email templates: fully responsive with max-width, proper mobile breakpoints,
table-based layout for Outlook/Gmail compatibility, no overflow
- Security: escape all user data in emails with escHtml(), escape APP_URL
in verify-email HTML, replace raw err.message with generic errors in auth
- Security: email body from admin settings now HTML-escaped before rendering
- New Learning Hub under Pediatric menu with content feed, category browsing,
search, content viewer, and interactive quizzes (MCQ, true/false)
- Quiz system with per-option wrong-answer explanations and general explanations
- Admin CMS for creating/editing categories, content (articles, pearls, quizzes),
and inline question builder with answer options
- 3-role system: admin (full access), moderator (can manage Learning Hub content),
user (all clinical features + learning hub read access)
- 5 new database tables: learning_categories, learning_content, learning_questions,
learning_options, learning_progress
- User progress tracking with score history per quiz
- Moderators see "Content Manager" tab instead of full Admin panel