io.zzstoatzz.phi.override

Singleton operator-override record. Lives on the OPERATOR's repo, not phi's — the bot reads it from the DID configured as owner_did, so repo ownership is the authorization: anyone can write this record to their own repo, but only the operator's copy has effect. While active, phi's outward-facing tools (post/like/repost) refuse with the operator's message, and the message renders as a banner in phi's system prompt and on the cockpit.