refactor(PostCard, PostCard.legacy): remove legacy PostCard component and update exports

- Deleted the legacy PostCard component to streamline the codebase and improve maintainability.
- Updated exports in PostCard and index files to remove references to the legacy component.
- Adjusted PostCardProps to eliminate legacy properties, ensuring only the new API is supported.
- Enhanced the PostCard component to focus on modern implementation and features.

src/screens/home/HomeScreen.tsx

@@ -512,14 +512,7 @@ export const HomeScreen: React.FC = () => {
             <PostCard
               post={post}
               variant="grid"
-              onPress={() => handlePostPress(post.id)}
-              onUserPress={() => authorId && handleUserPress(authorId)}
-              onLike={() => handleLike(post)}
-              onComment={() => handlePostPress(post.id, true)}
-              onBookmark={() => handleBookmark(post)}
-              onShare={() => handleShare(post)}
-              onImagePress={(images, index) => handleImagePress(images, index)}
-              onDelete={() => handleDeletePost(post.id)}
+              onAction={(action) => handlePostAction(post, action)}
               isPostAuthor={isPostAuthor}
             />
           </View>
@@ -579,15 +572,8 @@ export const HomeScreen: React.FC = () => {
             <PostCard
               key={post.id}
               post={post}
-              variant={viewMode === 'grid' ? 'grid' : 'default'}
-              onPress={() => handlePostPress(post.id)}
-              onUserPress={() => authorId && handleUserPress(authorId)}
-              onLike={() => handleLike(post)}
-              onComment={() => handlePostPress(post.id, true)}
-              onBookmark={() => handleBookmark(post)}
-              onShare={() => handleShare(post)}
-              onImagePress={(images, index) => handleImagePress(images, index)}
-              onDelete={() => handleDeletePost(post.id)}
+              variant={viewMode === 'grid' ? 'grid' : 'list'}
+              onAction={(action) => handlePostAction(post, action)}
               isPostAuthor={isPostAuthor}
             />
           );