Fix loading race condition, improve quiz UX, editor toolbar, settings page
- Fix: component loader now fires tabChanged AFTER HTML is in DOM
(fixes CMS/settings stuck at loading)
- CMS: separate "New Article", "New Quiz", "New Pearl" buttons
- CMS: editor toolbar with formatting buttons (bold, italic, headings,
lists, links, tables, quotes, code, hr)
- CMS: quiz questions have numbered headers (Q1, Q2...), larger inputs,
clear "check correct answer" labels
- CMS: validation prevents saving questions without correct answer marked
- Quiz UX: large card-style question boxes with gradient number badges,
bigger option buttons with hover effects and selection feedback,
checkmark/cross icons on results
- Settings: improved card spacing, input styling, section headers with
bottom borders for visual hierarchy
- Settings: updated compliance section (removed HIPAA references, added
BAA/institution guidelines language)
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