feat(hadis): support category search across all levels and leaf categories

apps/hadis/views/category.py

@@ -475,6 +475,14 @@ class CategoriesView(ListAPIView):
         ).filter(
             Q(active_hadis_count__gt=0) | Q(children_total_count__gt=0) | Q(source_type=HadisCategory.SourceType.QURAN)
         )
+        search_query = (self.request.query_params.get('search') or '').strip()
+        if search_query:
+            queryset = queryset.filter(
+                Q(title__icontains=search_query) |
+                Q(slug__icontains=search_query) |
+                Q(description__icontains=search_query)
+            )
+
         is_root = self.request.query_params.get('is_root', '').lower()
         if is_root in ['true', '1']:
             queryset = queryset.filter(parent__isnull=True)
@@ -504,11 +512,23 @@ class CategoriesBySectView(ListAPIView):
         ).filter(
             Q(active_hadis_count__gt=0) | Q(children_total_count__gt=0) | Q(source_type=HadisCategory.SourceType.QURAN)
         )
-        is_root = self.request.query_params.get('is_root', 'true').lower()
+        search_query = (self.request.query_params.get('search') or '').strip()
+        if search_query:
+            queryset = queryset.filter(
+                Q(title__icontains=search_query) |
+                Q(slug__icontains=search_query) |
+                Q(description__icontains=search_query)
+            )
+
+        is_root_param = self.request.query_params.get('is_root', None)
+        if is_root_param is not None:
+            is_root = is_root_param.lower()
             if is_root in ['true', '1']:
                 queryset = queryset.filter(parent__isnull=True)
             elif is_root in ['false', '0']:
                 queryset = queryset.filter(parent__isnull=False)
+        elif not search_query:
+            queryset = queryset.filter(parent__isnull=True)
 
         return apply_category_ordering_and_counts(queryset, self.request)