alignmentShowcase
Visually verifies cross-axis alignment dedup across containers — the scenario that used to overflow when a parent's non-Start alignment stacked on top of a child's non-Start TextAlign.
Every section below pins its right edge with a thin red rule. If the fix holds, every aligned text inside lands flush against that rule. Pre-fix, the narrower lines overshot the rule by widest - intrinsic PDF points — useful as a quick visual diff when bumping the library version inside a host app.