Tighten dummy payment validation

mandelstudio/management/commands/validate_idea_marketplace_launch.py

@@ -16,7 +16,10 @@ from mandelstudio.idea_marketplace import (
     IDEA_PRODUCTS,
     SHORT_DESCRIPTION_ATTRIBUTE_CODE,
 )
-from mandelstudio.launch_validation import validate_payment_provider_config
+from mandelstudio.launch_validation import (
+    _is_dummy_payment_app,
+    validate_payment_provider_config,
+)
 
 
 class Command(BaseCommand):
@@ -34,6 +37,12 @@ class Command(BaseCommand):
 
         validate_payment_provider_config()
 
+        installed_apps = list(settings.INSTALLED_APPS)
+        if any(_is_dummy_payment_app(app) for app in installed_apps):
+            raise CommandError(
+                "Dummy payment app detected in INSTALLED_APPS. Use a real provider plugin before production launch."
+            )
+
         config_path = Path(__file__).resolve().parents[2] / "ocyan.json"
         if config_path.exists():
             with config_path.open("r", encoding="utf-8") as handle: