feat: FAQ management from admin, public /faq, homepage section, llms.txt

- Backend: faq_questions table (schema + migration), CRUD + reorder API, Swagger docs
- Admin: FAQ page with create/edit, enable/disable, show on homepage, drag reorder
- Public /faq page fetches enabled FAQs from API; layout builds dynamic JSON-LD
- Homepage: FAQ section under Stay updated (homepage-enabled only) with See full FAQ link
- llms.txt: FAQ section uses homepage FAQs from API
- i18n: home.faq title/seeFull, admin FAQ nav

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/ui/RichTextEditor.tsx

@@ -342,6 +342,7 @@ export default function RichTextEditor({
   const lastContentRef = useRef(content);
   
   const editor = useEditor({
+    immediatelyRender: false,
     extensions: [
       StarterKit.configure({
         heading: {
@@ -393,6 +394,7 @@ export function RichTextPreview({
   className?: string;
 }) {
   const editor = useEditor({
+    immediatelyRender: false,
     extensions: [StarterKit],
     content: markdownToHtml(content),
     editable: false,