What probably matters to youSection of the release
What
The artifact tool's "comments" action now takes thread_id and cursor on top of action and url, so a model can fetch one thread or page through a long listing.
Details
When a listing is truncated, the omitted-threads line names the cursor to re-run with.
The parameter help describes cursor as continuing a listing that ended with a "more threads not listed" line.
Evidence
comments only: continue a listing that ended with a "more threads not listed" line
Strings lifted out of the shipped bundle, so the claim above can be checked against them.