feat(cockpit): render the utility strip's measured layout from the store

The Cockpit layout pass publishes the utility strip's fit to the
gev-cockpit store: the HUD's --cockpit-utility-* lengths, whether only the
expanded control fits, and whether a collapsed control beside an expanded
one is hidden from assistive technology. CockpitView renders the lengths
on the HUD and CockpitUtilityControls the strip's class and each control's
aria-hidden, which now also follows a popover opened between passes. Focus
leaves a control before the strip hides it. Exit publishes no layout,
which also clears the expanded height, class and aria-hidden the old exit
left behind. The briefing and Contact cards' positions stay imperative:
the same pass measures them straight after writing them.

CHANGELOG.md

@@ -177,6 +177,12 @@
   `signalCollapsed` in its presence, and each card's `data-collapsed` and
   its toggle's state, words and icon follow it (samehkhamis).
 
+- The Cockpit utility strip's measured layout renders from the
+  `gev-cockpit` store: the layout pass publishes `utilityLayout` (the HUD's
+  `--cockpit-utility-*` lengths, `primaryOnly` and `hideCollapsed`), and a
+  host constructing `CockpitController` passes `publish.utilityLayout`
+  beside its other publishers (samehkhamis).
+
 ## [0.3.0] — 2026-10-27 — Street Level, On Your Phone, in Your Language
 
 - Show a Street Level view facing 359.5° or more as 0°. The viewer caption