Repurpose the previously-empty left side of the floating submit bar.
Top line is the org name; secondary line updates as the user scrolls
so the currently viewed stage is always visible even after the
top-of-form header has scrolled out of sight.
IntersectionObserver with a top-biased rootMargin tracks which
section is in view; topmost intersecting section wins ties.
Submit-state feedback (error / in-flight) still takes priority over
the viewing/draft text when active.
Joel Brock
7e5b1e1197