brain backup 2026-09-14

tools/test_parent_review_contract.py

@@ -0,0 +1,20 @@
+import importlib.util
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent
+spec = importlib.util.spec_from_file_location("render_parent_book", ROOT / "render_parent_book.py")
+render_parent_book = importlib.util.module_from_spec(spec)
+assert spec.loader
+spec.loader.exec_module(render_parent_book)
+
+
+def test_parent_review_contract_preserves_chapter_anchors_and_rejects_internal_subtitles():
+    valid = "## Chapter 0: A Beginning\n\nText\n\n## Chapter 1: The Pattern\n\nText\n\n### Reflection and Action\n\nWork"
+    render_parent_book.validate_parent_review_contract(valid)
+
+
+def test_parent_review_contract_rejects_missing_chapter_anchor():
+    import pytest
+
+    with pytest.raises(ValueError, match="Chapter 1"):
+        render_parent_book.validate_parent_review_contract("## Chapter 0: A Beginning\n")