feat(i18n): add featured and latest prompts translations in multiple languages

prisma/migrations/20251211093327_add_featured_prompts/migration.sql

@@ -0,0 +1,6 @@
+-- AlterTable
+ALTER TABLE "prompts" ADD COLUMN     "featuredAt" TIMESTAMP(3),
+ADD COLUMN     "isFeatured" BOOLEAN NOT NULL DEFAULT false;
+
+-- CreateIndex
+CREATE INDEX "prompts_isFeatured_idx" ON "prompts"("isFeatured");

prisma/schema.prisma

@@ -134,6 +134,8 @@ model Prompt {
   
   // Metadata
   viewCount   Int        @default(0)
+  isFeatured  Boolean    @default(false)
+  featuredAt  DateTime?
   createdAt   DateTime   @default(now())
   updatedAt   DateTime   @updatedAt
 
@@ -154,6 +156,7 @@ model Prompt {
   @@index([categoryId])
   @@index([type])
   @@index([isPrivate])
+  @@index([isFeatured])
   @@map("prompts")
 }