fix: Add city to venue slugs for uniqueness

backend/importers/base.py

@@ -145,9 +145,11 @@ class ImporterBase(ABC):
         if existing:
             venue_id = existing.id
         else:
+            # Include city in slug for uniqueness (e.g., "Private Venue" in multiple cities)
+            venue_slug = f"{generate_slug(name)}-{generate_slug(city)}"
             venue = Venue(
                 name=name,
-                slug=generate_slug(name),
+                slug=venue_slug,
                 city=city,
                 state=state,
                 country=country,