Deploy gate dc-prod-deploy-dc171 (grade D, urn:ump:iesjvepuqb5poim7wu22ff4jtd5vhpw2lotfhogljemsw2h4y6vq)
blocked the cutover: listRecords built 'dig @srv -p port AXFR zone', but
dig's documented positional contract is [name] [type]. BIND 9.18 accepts
either order (live-checked), so the bug was invisible on this host's dig;
older 9.11-9.16 on other distros follow the documented order. Fixed to
'zone AXFR', test asserts the production argv, and the corrected code path
was LIVE-VERIFIED against a real DNS server: actual AXFR of zone 'sami'
via the adapter itself — 48 records parsed (SOA/A/NS), zero mocked pieces.
Parity suite: 24/24.