Records what shipped, the two operator decisions as answered, what the website and
the controller now share and how a change flows between them, and the five faults
that measurement caught before the switch rather than after.
head-before.json / head-after.json are kept as the evidence that the switch changed
no SEO-bearing tag: the only difference across 19 pages is the dash substitution
inside the two FAQ pages' JSON-LD.
