Harden UI layout for font scale and long strings

- Measure and cap the HUD target chip after each font-scale change; clip HUD top labels.
- Ellipsize long action-button labels so panels cannot grow past the viewport.
- Add accessibility/button layout assertions and refresh the gallery captures.
- Record the font/layout pass in TODO, docs, changelog and memory.

CHANGELOG.md

@@ -17,6 +17,9 @@ Semantic Versioning.
 - Esc and right-click now close the top panel consistently, restore the venue
   menu after menu Settings, and recapture the mouse without leaving the guard
   frozen. Help no longer opens Pause behind itself.
+- The HUD target chip grows and caps with the selected font scale, top labels
+  clip safely, and long action-button labels ellipsize instead of pushing panels
+  wider than the screen.
 - NPC reason answers now use role-specific dialogue contexts, so staff, guests,
   delivery workers, performers and other archetypes answer instead of silently
   deflecting the Reason verb.