os.path.join (folder, filename) ensures the path is correct for the system. On Windows, it uses backslashes (reports\summary.txt); on Linux and macOS it uses forward slashes (reports/summary.txt).

where the middle indented item is indented by 4 spaces (not a tab), which I think is expected behavior with turndown 3. In the markdown editor, put your cursor after 1. numbered1 and hit enter to add ...

The OpenAI Realtime API flattens tool arguments incorrectly, ignoring the provided JSON schema for nested objects. This causes tool calls to fail because the arguments don't match the expected ...