multiples mejoras añadidas, se retiró la categoría

lib/providers/videos_provider.dart

@@ -135,8 +135,6 @@ class VideosProvider extends ChangeNotifier {
             'thumbnail': PlutoCell(value: media.fileUrl),
             'title': PlutoCell(value: media.title ?? media.fileName),
             'file_description': PlutoCell(value: media.fileDescription),
-            'category':
-                PlutoCell(value: _getCategoryName(media.mediaCategoryFk)),
             'reproducciones': PlutoCell(value: media.reproducciones),
             'duration': PlutoCell(
                 value: media.seconds != null
@@ -168,18 +166,6 @@ class VideosProvider extends ChangeNotifier {
     }
   }
 
-  /// Get category name by ID
-  String _getCategoryName(int? categoryId) {
-    if (categoryId == null) return 'Sin categoría';
-    try {
-      return categories
-          .firstWhere((cat) => cat.mediaCategoriesId == categoryId)
-          .categoryName;
-    } catch (e) {
-      return 'Sin categoría';
-    }
-  }
-
   /// Format file size to human readable
   String _formatFileSize(int? bytes) {
     if (bytes == null) return '-';
@@ -245,7 +231,6 @@ class VideosProvider extends ChangeNotifier {
   Future<bool> uploadVideo({
     required String title,
     String? description,
-    int? categoryId,
     int? durationSeconds,
     List<String>? tags,
   }) async {
@@ -307,7 +292,6 @@ class VideosProvider extends ChangeNotifier {
         'file_url': videoUrl,
         'storage_path': videoStoragePath,
         'organization_fk': organizationId,
-        'media_category_fk': categoryId,
         'metadata_json': metadataJson,
         'seconds': durationSeconds,
         'is_public_file': true,
@@ -445,25 +429,6 @@ class VideosProvider extends ChangeNotifier {
     }
   }
 
-  /// Update video category
-  Future<bool> updateVideoCategory(int mediaFileId, int? categoryId) async {
-    try {
-      await supabaseML
-          .from('media_files')
-          .update({'media_category_fk': categoryId})
-          .eq('media_file_id', mediaFileId)
-          .eq('organization_fk', organizationId);
-
-      await loadMediaFiles();
-      return true;
-    } catch (e) {
-      errorMessage = 'Error actualizando categoría: $e';
-      notifyListeners();
-      print('Error en updateVideoCategory: $e');
-      return false;
-    }
-  }
-
   /// Update video metadata
   Future<bool> updateVideoMetadata(
     int mediaFileId,
@@ -689,29 +654,10 @@ class VideosProvider extends ChangeNotifier {
             curr.reproducciones > next.reproducciones ? curr : next);
       }
 
-      // Videos by category
-      Map<String, int> videosByCategory = {};
-      for (var media in mediaFiles) {
-        final categoryName = _getCategoryName(media.mediaCategoryFk);
-        videosByCategory[categoryName] =
-            (videosByCategory[categoryName] ?? 0) + 1;
-      }
-
-      // Most viewed category
-      String? mostViewedCategory;
-      if (videosByCategory.isNotEmpty) {
-        mostViewedCategory = videosByCategory.entries
-            .reduce((a, b) => a.value > b.value ? a : b)
-            .key;
-      }
-
       return {
         'total_videos': totalVideos,
         'total_reproducciones': totalReproducciones,
         'most_viewed_video': mostViewed?.toMap(),
-        'videos_by_category': videosByCategory,
-        'most_viewed_category': mostViewedCategory,
-        'total_categories': categories.length,
       };
     } catch (e) {
       print('Error en getDashboardStats: $e');
@@ -745,8 +691,6 @@ class VideosProvider extends ChangeNotifier {
             'thumbnail': PlutoCell(value: media.fileUrl),
             'title': PlutoCell(value: media.title ?? media.fileName),
             'file_description': PlutoCell(value: media.fileDescription),
-            'category':
-                PlutoCell(value: _getCategoryName(media.mediaCategoryFk)),
             'reproducciones': PlutoCell(value: media.reproducciones),
             'duration': PlutoCell(
                 value: media.seconds != null