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.

docs/smoke-checklist.md

@@ -45,3 +45,4 @@
 43. The venue menu offers Hollywood Boulevard — Day and — Night; either starts the same map, and Night starts in the late phase with a full shift clock.
 44. The Joke Shop opens on the Sunset Strip club: the black hall, signature canopy, circular **THE JOKE SHOP** sign, red curtains, west entrance, palms, dry hillside with houses, neighbouring frontage and the opposite side of Sunset all read from the door camera. Day lighting and late lighting both look correct; the guard can walk the sidewalk without leaving the nav bounds.
 45. Esc and right-click close only the top panel (Help, Settings, Pause, Review, Radio, timeline, inspection/wand, action wheel); Settings opened from the venue menu returns to the menu, Help no longer opens Pause behind it, and closing a modal recaptures the mouse without leaving the guard frozen.
+46. At 0.75× and 1.75× HUD font scale, long target names stay inside the target chip, the chip grows/caps correctly, and long button labels ellipsize instead of pushing panels off-screen.