chore: add SPDX-License-Identifier headers to Python scripts

.agents/scripts/conftest.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 """Shared pytest fixtures for validate_state.py tests."""
 
 from __future__ import annotations

.agents/scripts/migrate_to_v2.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# SPDX-License-Identifier: Apache-2.0
 """Migrate a consumer project from Lead Protocol v1.x to v2.0.0.
 
 v1.x layout (what we migrate FROM):

.agents/scripts/test_migrate_to_v2.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 """Unit tests for migrate_to_v2.py.
 
 Coverage is narrowly scoped to the migration functions that produce persistent

.agents/scripts/test_validate_state.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 """Unit tests for validate_state.py (v2.0.0 layout).
 
 Run from the repo root:

.agents/scripts/validate_state.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# SPDX-License-Identifier: Apache-2.0
 """Validate Lead Protocol state files against their JSON Schemas.
 
 Usage: