Django admin cleanup

backend/igny8_core/admin/base.py

@@ -145,7 +145,16 @@ class Igny8ModelAdmin(UnfoldModelAdmin):
         for group in sidebar_navigation:
             group_is_active = False
             for item in group.get('items', []):
-                item_link = item.get('link', '')
+                # Unfold stores resolved link in 'link_callback', original lambda in 'link'
+                item_link = item.get('link_callback') or item.get('link', '')
+                # Convert to string (handles lazy proxy objects and ensures it's a string)
+                try:
+                    item_link = str(item_link) if item_link else ''
+                except:
+                    item_link = ''
+                # Skip if it's a function representation (e.g., "<function ...>")
+                if item_link.startswith('<'):
+                    continue
                 # Check if current path matches this item's link
                 if item_link and current_path.startswith(item_link):
                     item['active'] = True