ui: Replace أ with بيان in font size dropdown preview

feat: 12 UI improvements batch - 1. Editor surface flush (no margin/border, Google Docs style) - 2. Custom styled summary slider (gradient thumb) - 3. Empty states with icons for suggestions - 4. Enhanced status bar (chars, sentences, reading time) - 5. Mobile scrollable formatting toolbar - 6. Summary word count + compression ratio - 7. Document search bar with filter - 8. Text color + highlight color pickers - 9. Lists (bullet/ordered) + indent/outdent + clear format - 10. Animated sun/moon theme toggle - 11. Summary bullet points mode toggle - 12. Print styles (only editor content)

feat: Premium formatting toolbar redesign - Custom dropdown menus for font family and size (animated, styled) - Pill-shaped button groups with gradient active states - Alignment applies to paragraph with selection (standard behavior) - Undo/Redo works for typing + formatting (browser native stack) - Font preview in size dropdown - Professional visual polish

feat: Rich text formatting toolbar + formatting-preserving renderer - Bold, Italic, Underline, Strikethrough, Alignment, Undo/Redo - Font family and font size dropdowns - New DOM-level overlay renderer (preserves formatting during analysis) - Apply/dismiss corrections keep original formatting

feat: Professional editor UI redesign - 3-column layout (docs | editor | sidebar) - Documents panel always visible on desktop - Import/export moved to left sidebar - Removed CTA button from nav - Replaced all emojis with SVG icons - Clean toolbar with separator - Mobile: docs stay as overlay sidebar

fix: Remove 'Apply All' button - conflicts with spelling+grammar pipeline

feat: Show 3 spelling alternatives + keep-as-is option - Backend: Generate alternatives via EditDistanceCorrector - Tooltip: Multiple clickable correction buttons - Sidebar cards: Alt chips for each suggestion - Dismiss button removes error highlight (keep original word)

authDone Ready for deployment

added light theme and ISLAMIC RAG and fixed the UI/UX issues and added the auth

initial UI