Tighten dummy payment validation

mandelstudio/launch_validation.py

@@ -13,6 +13,12 @@ def _is_demo_data(value: str) -> bool:
     return "demodata" in normalized
 
 
+def _is_dummy_payment_app(app_label: str) -> bool:
+    normalized = str(app_label).lower().replace(":", ".")
+    parts = [part for part in normalized.split(".") if part]
+    return "payment_dummy" in parts or normalized == "payment_dummy"
+
+
 def validate_payment_provider_config() -> None:
     installed_apps = list(settings.INSTALLED_APPS)
     payment_apps = [app for app in installed_apps if "payment" in app.lower()]
@@ -28,7 +34,7 @@ def validate_payment_provider_config() -> None:
         raise CommandError(
             "Demo data plugin detected in INSTALLED_APPS. Remove all demodata plugins before launch."
         )
-    if any("dummy" in app.lower() for app in payment_apps):
+    if any(_is_dummy_payment_app(app) for app in payment_apps):
         raise CommandError(
             "Dummy payment app detected in INSTALLED_APPS. Use a real provider plugin before production launch."
         )