{# The chrome, the labels, the headings and every word this product writes about itself are English, so the document says so. What the *engine* writes is not: under the output-language policy (docs/requirements-model.md, "The language of the outputs") the questions and the understanding it renders each turn mirror the client's request, while every buildable artifact -- the decision brief included -- anchors English. Those regions therefore declare `lang=""` -- HTML's own "the language is unknown" -- rather than inheriting the `en` below. Nothing records a session's language and #277 puts detection out of scope, so an honest unknown is the strongest true claim available; a guessed `fr` would be right more often and no better founded. Pinned by `test_output_language_regions.py`. #} {# The brand mark, shipped as a real icon rather than the browser default every tab showed before (#241) -- `/favicon.ico` is also served (see routes/health.py) so the browser's own implicit probe for that path stops 404ing into the operator's logs too. #} {# htmx injects a