Nobody had decided which English the app spoke, so the builders used the one they reached for first, which turned out to be British. Colour, centre, cancelled, grey, and a font “licence” field that generated a whole table of them.
The owner’s note settled it. The rule was saved, the agents in flight were told, and once the day’s three remaining branches had merged a dedicated sweep went through the codebase: the font-table generator and its output, an error variant renamed, the interface strings, the docs. Quotations from the owner in the planning record were left exactly as written, and a handful of identifiers that come from outside the project kept their spelling because changing them would break something.
It is a small thing, but it is the kind of small thing that is cheap on day five and expensive on day fifty.