Extent the map started on, re-fitted at reveal: the view of the theme the profile starts
on when that theme declares bounds, the profile bounds otherwise. null when the map
started on a centre and a zoom — nothing is re-fitted then.
Padding applied to the reveal-time fitBounds — the profile's.
Ceiling on the zoom of that re-fit — the profile's map.initialMaxZoom when it declares
one, null otherwise. The same ceiling the first fit was given.
Resolved permalink config (cfg.ui.permalink or {}).
Dependency context for
setupReveal(init-reveal.ts).