Incremental Update: No Substantive Technical Progress
The single new message from Hayato Kuroda is a brief clarification/follow-up to a prior exchange with Sergey. Kuroda reiterates his concern about how to ensure it is safe to remove/overwrite the existing pg_commit_ts directory in the new cluster before copying from the old cluster. This is a continuation of an already-documented design concern rather than a new technical argument.
No new patches, no new participants, no position shifts, and no new technical insights beyond what was already covered in the prior analysis.