pub fn native_topic(
harness: &str,
path: &Path,
session_id: &str,
) -> Option<String>Expand description
The harness’s own name for what a session is about: Claude Code’s ai-title (within the header’s bounds; a
transcript past them that has none will not get one) or Codex’s thread name, its newest rename. For a live index
whose row was read before the harness named it, or (Codex) renamed since; it shows on the session’s next write.