You'll notice
Useful3 Signal3
Artifact auto-replies now always post a short summary and resolve the comment thread.
What's wrong with this entry?
Anonymous. No account, no email.
What
Every artifact auto-reply notice, including the hourly cap, notify-only, no-op edit, failed edit, and plain acknowledgement, now ends with a shared instruction to post a brief reply saying what was done and resolve the thread, with a separate wording for threads already marked resolved.
Evidence
Once you have acted on the thread, post a brief reply saying what you did (if you have not already); the thread stays resolved.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.