migration: cutover complete — DNS switch verified, baseline recaptured against the new box, server.inference.coop resolved; all-clear email drafted

dns-change-sheet.md

@@ -64,8 +64,9 @@ is why it answers with the Cloudron dashboard.)
 
 1. **Lower the TTL on records 1–4 and 6 from 3600 to ~300.** At 3600 a mistake takes an hour to correct;
    at 300 it takes five minutes. Do this a day ahead so the old TTL expires, then restore it afterwards.
-2. **Establish what `server.inference.coop` is used for.** Nothing in the co-op's documented set refers to
-   it, and it is not covered by the wildcard. Do not move or delete it until that is known.
+2. ~~**Establish what `server.inference.coop` is used for.**~~ **Resolved 2026-11-02:** it was repointed
+   to the new box with the rest (confirmed authoritatively on both NS). Its purpose is still
+   unidentified, but it no longer references the old box — see the runbook's CUTOVER COMPLETE section.
 3. **Confirm the full name of record 11** (above).
 
 ## Verification after the move