Pulse record format

Riskiens edge pulse (parse body only).

The TXT name is documented with the edge-DNS owners, not here.

v=ri1; host=<label>.ops.riskiens.com

<label> is the current pulse host label. Resolve that A/AAAA. Do not treat ops.riskiens.com apex as the target.

Version ri1 only. Ignore unknown v= keys.