refactor: rename name→displayName in review files

server/src/lib/review-display.js

@@ -1,7 +1,7 @@
 /** Публичное отображение автора отзыва (без «голого» email). */
 export function publicReviewAuthorDisplay(user) {
   if (!user || typeof user !== 'object') return 'Покупатель'
-  const name = typeof user.name === 'string' ? user.name.trim() : ''
+  const name = typeof user.displayName === 'string' ? user.displayName.trim() : ''
   if (name) return name
   const email = typeof user.email === 'string' ? user.email.trim() : ''
   const at = email.indexOf('@')

server/src/routes/api/admin-reviews.js

@@ -56,7 +56,7 @@ export async function registerAdminReviewRoutes(fastify) {
       rating: updated.rating,
       text: updated.text || '',
       productTitle: existing.product?.title || '',
-      userName: existing.user?.name || existing.user?.email || '',
+      userName: existing.user?.displayName || existing.user?.email || '',
       reviewId: updated.id,
     })