fix(lobby): normalize host SPA deeplink path segments

lobby/ui_views.py

@@ -22,7 +22,9 @@ def host_screen(request, spa_path=None):
     if settings.WPP_SPA_ENABLED:
         host_route = "/host"
         if spa_path:
-            host_route = f"/host/{spa_path.strip('/')}"
+            normalized_spa_path = "/".join(segment for segment in spa_path.split("/") if segment)
+            if normalized_spa_path:
+                host_route = f"/host/{normalized_spa_path}"
         return _render_spa_shell(request, host_route, "host")
 
     categories = Category.objects.filter(is_active=True).order_by("name")