Capture disproved addendum 1's guess: macOS DOES send a correct NBNS query and
IS answered correctly in 140us; it simply never acts on it. Records the proven
per-client matrix and keeps sidebar discovery explicitly unproven.
Also records against R-45 the lesson the loop taught: a phase a client answers
with a one-shot action must be an EDGE the registry serves once, never a level
synthesised into the phase channel.