feat: Implement CMS module with API endpoints, data model, and initial seeding for landing page content.

prisma/schema.prisma

@@ -496,3 +496,23 @@ model Message {
   @@index([status])
   @@map("messages")
 }
+
+// ===========================================
+// CMS CONTENT - Dynamic page content management
+// ===========================================
+
+model CmsContent {
+  id          String   @id @default(uuid())
+  pageSlug    String
+  sectionKey  String
+  content     Json
+  isPublished Boolean  @default(true)
+
+  // Timestamps
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  @@unique([pageSlug, sectionKey])
+  @@index([pageSlug])
+  @@map("cms_contents")
+}