When the same field fails 2+ consecutive audit runs, a known_issue
entry is written into the ASN's registry profile with:
- field name, description of what's wrong
- first_seen / last_seen dates, occurrence count
- last auth vs PC values
- status: open (stays until PeerCortex data matches)
Report shows KNOWN ISSUES section (all open issues across registry).
Issues auto-resolve when the ASN passes, or partially resolve when
individual fields are fixed. Also stores ASN name in registry.