add news detail page

lib/features/news/domain/entities/news_article.dart

@@ -45,6 +45,18 @@ class NewsArticle {
   /// Author avatar URL (optional)
   final String? authorAvatar;
 
+  /// Tags/keywords for the article
+  final List<String> tags;
+
+  /// Like count
+  final int likeCount;
+
+  /// Comment count
+  final int commentCount;
+
+  /// Share count
+  final int shareCount;
+
   /// Constructor
   const NewsArticle({
     required this.id,
@@ -59,6 +71,10 @@ class NewsArticle {
     this.isFeatured = false,
     this.authorName,
     this.authorAvatar,
+    this.tags = const [],
+    this.likeCount = 0,
+    this.commentCount = 0,
+    this.shareCount = 0,
   });
 
   /// Get formatted publication date (dd/MM/yyyy)
@@ -93,6 +109,10 @@ class NewsArticle {
     bool? isFeatured,
     String? authorName,
     String? authorAvatar,
+    List<String>? tags,
+    int? likeCount,
+    int? commentCount,
+    int? shareCount,
   }) {
     return NewsArticle(
       id: id ?? this.id,
@@ -107,6 +127,10 @@ class NewsArticle {
       isFeatured: isFeatured ?? this.isFeatured,
       authorName: authorName ?? this.authorName,
       authorAvatar: authorAvatar ?? this.authorAvatar,
+      tags: tags ?? this.tags,
+      likeCount: likeCount ?? this.likeCount,
+      commentCount: commentCount ?? this.commentCount,
+      shareCount: shareCount ?? this.shareCount,
     );
   }
 
@@ -115,38 +139,13 @@ class NewsArticle {
   bool operator ==(Object other) {
     if (identical(this, other)) return true;
 
-    return other is NewsArticle &&
-        other.id == id &&
-        other.title == title &&
-        other.excerpt == excerpt &&
-        other.content == content &&
-        other.imageUrl == imageUrl &&
-        other.category == category &&
-        other.publishedDate == publishedDate &&
-        other.viewCount == viewCount &&
-        other.readingTimeMinutes == readingTimeMinutes &&
-        other.isFeatured == isFeatured &&
-        other.authorName == authorName &&
-        other.authorAvatar == authorAvatar;
+    return other is NewsArticle && other.id == id;
   }
 
   /// Hash code
   @override
   int get hashCode {
-    return Object.hash(
-      id,
-      title,
-      excerpt,
-      content,
-      imageUrl,
-      category,
-      publishedDate,
-      viewCount,
-      readingTimeMinutes,
-      isFeatured,
-      authorName,
-      authorAvatar,
-    );
+    return id.hashCode;
   }
 
   /// String representation