chore: update skill release readme source

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_release_workflow.py

@@ -28,6 +28,32 @@ def publish_workflow_text() -> str:
         return f.read()
 
 
+def test_workflow_packages_readme_at_root(workflow_text: str) -> None:
+    assert "readme_src = os.path.abspath('README.md')" in workflow_text
+    assert "readme_dst = os.path.join(PACKAGE, 'README.md')" in workflow_text
+    assert "Copied README.md" in workflow_text
+    assert (
+        "raise RuntimeError('README.md exists in skill root but was not packaged')"
+        in workflow_text
+    )
+
+
+def test_workflow_metadata_reads_root_readme(workflow_text: str) -> None:
+    assert "readme_path = 'README.md'" in workflow_text
+    assert "frontmatter.load(readme_path)" in workflow_text
+    assert "metadata['readme_md'] = body" in workflow_text
+
+
+def test_workflow_does_not_use_references_readme_for_marketplace(
+    workflow_text: str,
+) -> None:
+    assert "os.path.join('references', 'README.md')" not in workflow_text
+    assert not re.search(
+        r"frontmatter\.load\([^)]*references[^)]*README",
+        workflow_text,
+    )
+
+
 def test_workflow_packages_env_example_at_root(workflow_text: str) -> None:
     assert ".env.example" in workflow_text
     assert "Copied .env.example" in workflow_text