**refactor(dynamic): introduce NATS protocol emulator with publish/deliver support, enhance endpoint handling, and extend SDK compatibility for Go and Python**

tests/dynamic_fixtures/migration/django_ops/vuln.py

@@ -0,0 +1,19 @@
+"""Phase 21 — Django Migration.operations runtime fixture."""
+_NYX_ADAPTER_MARKER = "from django.db import migrations"
+
+import os
+
+
+class _RunSQL:
+    def __init__(self, sql):
+        self.sql = sql
+
+
+class Migration:
+    operations = [
+        _RunSQL(
+            "CREATE INDEX idx_"
+            + (os.environ.get("NYX_PAYLOAD") or "users")
+            + " ON users(name)"
+        )
+    ]