Make the comfort/tolerance slider self-explanatory and fix its labeling.
- A temperature marker sits above each of the four handles (the band
borders) — the two comfort bounds and the two tolerance bounds — so the
numbers read straight off the track instead of a combined caption.
- The header is now two disparate labels, "Comfort lo–hi" and "Tolerance
tlo–thi", rather than the old "Comfort & tolerance 16–22 · tolerance
4–27" that mislabeled the comfort range.
- Distribution-bar key: on desktop each category label is positioned at its
segment's midpoint (ends pinned to the bar edges) so the labels line up
under the colors they describe; on mobile it stays a plain wrapping row.