fix: issue-372, issue-227, issue-406

lib/features/feed/models/post_feed_mapper.dart

@@ -26,16 +26,47 @@ class PostFeedMapper {
       totalViews: item.postViewsCount,
       totalComments: item.postCommentsCount,
       wasLikedByMe: item.postIsLikedByUser,
-      images: item.images,
+      images: item.images.where((image) => hasRenderableImage(image.url)).toList(),
       videoEmbedUrl: item.videoEmbedUrl,
       videoUrlThumb: item.videoUrlThumb,
     );
   }
 
   static String resolveMediaUrl(String? url) {
-    if (url == null || url.isEmpty) return '';
-    if (url.startsWith('http://') || url.startsWith('https://')) return url;
-    if (url.startsWith('/')) return '${sl<AppConfig>().baseUrl}$url';
+    if (url == null || url.isEmpty || isPlaceholderMediaUrl(url)) {
+      return '';
+    }
+    if (url.startsWith('http://') || url.startsWith('https://')) {
+      return url;
+    }
+    if (url.startsWith('/')) {
+      return '${sl<AppConfig>().baseUrl}$url';
+    }
     return '${sl<AppConfig>().baseUrl}/storage/$url';
   }
+
+  static bool isPlaceholderMediaUrl(String url) {
+    return url.toLowerCase().contains('element-image-placeholder');
+  }
+
+  static bool hasRenderableImage(String? url) {
+    if (url == null || url.trim().isEmpty) {
+      return false;
+    }
+    return !isPlaceholderMediaUrl(url);
+  }
+
+  static bool hasVisibleMedia({
+    required String image,
+    required List<FeedGalleryImage> images,
+    String? videoEmbedUrl,
+  }) {
+    if (videoEmbedUrl != null && videoEmbedUrl.trim().isNotEmpty) {
+      return true;
+    }
+    if (hasRenderableImage(image)) {
+      return true;
+    }
+    return images.any((image) => hasRenderableImage(image.url));
+  }
 }