feat(ui): render the status chips and their split-flap labels from a store

ShellFeedback publishes the loading status and the road network chip, and
CctvControls the camera grid chip, to the gev-status store; the scene
chrome renders them. SplitFlapText plays the departure-board cascade that
splitFlap.js plans, writing only the label's one text node, and rests when
its owner is destroyed. setSplitFlapText and disposeSplitFlap are gone.

scripts/format-scope.json

@@ -1127,5 +1127,8 @@
   "build/vueLoader.js",
   "build/registerVue.js",
   "src/ui/panelNavigation.test.mjs",
-  "src/ui/stores/panels.test.mjs"
+  "src/ui/stores/panels.test.mjs",
+  "src/ui/stores/status.js",
+  "src/ui/statusChipsView.test.mjs",
+  "src/ui/statusChipOwners.test.mjs"
 ]