feat(brand): rebrand to Hedena Gold and bring main user-app chrome

Rename the brand, ship Hedena logos, persist login OTP text in the SMS list, and port home/nav/auth/theme polish from main while keeping expert customers intact.

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

apps/api/prisma/seed.ts

@@ -389,8 +389,8 @@ async function main() {
   await prisma.brand.updateMany({ where: { id: 'brand-henza' }, data: { id: 'brand-montzar' } });
   const brandMain = await prisma.brand.upsert({
     where: { id: 'brand-montzar' },
-    update: { title: 'تهران تاج طلا' },
-    create: { id: 'brand-montzar', title: 'تهران تاج طلا' },
+    update: { title: 'هدناگلد' },
+    create: { id: 'brand-montzar', title: 'هدناگلد' },
   });
   const brandArtisan = await prisma.brand.upsert({
     where: { id: 'brand-artisan' },