feat(berita): add multiple images gallery and YouTube video support

- Update schema: add images relation list and linkVideo field
- API: support multiple image upload and YouTube link in create/update
- Admin create page: add gallery upload (max 10) and YouTube embed preview
- Admin edit page: manage existing/new gallery images and YouTube link
- Admin detail page: display gallery grid and YouTube video embed
- Public detail page: show gallery images and YouTube video with responsive layout
- State: add imageIds[] and linkVideo fields with proper type handling
- Music player: fix seek functionality and ESLint warnings

Breaking changes:
- Prisma schema updated - requires migration
- API create/update endpoints now expect imageIds array and linkVideo string

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

prisma/schema.prisma

@@ -61,7 +61,8 @@ model FileStorage {
   isActive                       Boolean                    @default(true)
   link                           String
   category                       String // "image" / "document" / "audio" / "other"
-  Berita                         Berita[]
+  Berita                         Berita[]                 @relation("BeritaFeaturedImage")
+  BeritaImages                   Berita[]                 @relation("BeritaImages")
   PotensiDesa                    PotensiDesa[]
   Posyandu                       Posyandu[]
   StrukturPPID                   StrukturPPID[]
@@ -612,15 +613,19 @@ model Berita {
   id               String          @id @default(cuid())
   judul            String
   deskripsi        String
-  image            FileStorage?    @relation(fields: [imageId], references: [id])
+  image            FileStorage?    @relation("BeritaFeaturedImage", fields: [imageId], references: [id])
   imageId          String?
+  images           FileStorage[]   @relation("BeritaImages")
   content          String          @db.Text
+  linkVideo        String?         @db.VarChar(500)
   createdAt        DateTime        @default(now())
   updatedAt        DateTime        @updatedAt
   deletedAt        DateTime        @default(now())
   isActive         Boolean         @default(true)
   kategoriBerita   KategoriBerita? @relation(fields: [kategoriBeritaId], references: [id])
   kategoriBeritaId String?
+
+  @@index([kategoriBeritaId])
 }
 
 model KategoriBerita {