Improve watch.ml comments and error message Replace "Not sure this is right" with a description of what stream_iter does and its limitation (None is ignored). Replace "Big Yikes" failwith with an actionable error message. Replace "terrible hack" doc with an explanation of why the global switch exists and what the proper fix would be. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>