The environment and project selects sat as two buttons on the far right of
the header, disconnected from the breadcrumb that names the page, and every
scopable row grew a third caption line the moment a project was picked,
shifting the whole page. The breadcrumb now reads Settings / Section /
Environment / Project, with the last two as the same quiet menu triggers the
thread header and usage page use: muted at "all", foreground once narrowed.
A layers icon beside a row's title carries the inherited, overridden or
mixed state (tooltip for the words, click for the top-down resolution chain
per environment), so narrowing to a project no longer reflows the rows.