feat(cockpit): teleport the shared Display groups into Cockpit's popover

The Cockpit display portal publishes the Display popover's slots to the
gev-display store while Cockpit is on, and the Display panel teleports its
HUD, Detection, Parameters and 3D groups into them and back, each only
while its own slot is published. The portal no longer moves the groups:
it keeps each surface's scroll position, puts back focus the move
dropped, and lays the surfaces out once Vue has moved them. The popover's
uses-shared-display-controls class renders from the store, and the right
rail no longer re-homes the parameters panel the markup already places.

CHANGELOG.md

@@ -183,6 +183,11 @@
   host constructing `CockpitController` passes `publish.utilityLayout`
   beside its other publishers (samehkhamis).
 
+- Cockpit's Display popover shows the Display panel's own HUD, Detection,
+  Parameters and 3D groups through Vue teleports: `CockpitDisplayPortal`
+  publishes the popover's slots (`publish`, with `afterRender` to lay out
+  once they have moved) instead of moving the groups itself (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