Read the complete thread (both directions, all controller messages).
No new messages from Kun Cao
No new contact-specific evidence
No public STEP artifact that advances the discussion
No open hosting or reuse-rights question that a follow-up could answer
The single permitted follow-up is NOT sent. Rationale:
Sending without new evidence wastes the one permitted follow-up
No open question exists that a follow-up could resolve
The author was left alone per the stand-down protocol
The cycle remains in no-reply status. Proceed to cycle outcome receipt (item 5).
7-12d follow-up: no new evidence, NO-SEND, follow_up_sent=false.