docs: audit release worker instructions (#19)

tests/test_readme.py

@@ -0,0 +1,12 @@
+from pathlib import Path
+
+
+README = Path(__file__).parents[1] / "README.md"
+
+
+def test_release_worker_instructions_use_direct_agent_execution():
+    text = README.read_text()
+
+    assert "codex" not in text.lower()
+    assert "RELEASE_AGENT_COMMAND=true" in text
+    assert "--issue 19" in text