feat(ui): render the location tray's pills, mini status and search error from a store

LocationControls (./ui/location) no longer builds the city and landmark
pills or writes the mini status and the search error: it presents the tray
and hands it to its publish option, so the entry stays Vue-free. The shell
publishes it to a new gev-location store and connects the controls, and
the dock renders it and calls chooseCity() and choosePoi(). The landmark
row still expands a frame after its pills render. The search field, its
toggle and the reset buttons keep their listeners. The location QA harness
reads the rendered elements.

scripts/package-boundaries.json

@@ -58,6 +58,7 @@
       "src/ui/stores/cctv.js",
       "src/ui/stores/radio.js",
       "src/ui/stores/context.js",
+      "src/ui/stores/location.js",
       "src/ui/stores/streetLevel.js",
       "src/ui/rail/RailChips.vue",
       "src/ui/views/panels/DisplayPanel.vue",
@@ -973,6 +974,7 @@
       "src/ui/stores/cctv.js",
       "src/ui/stores/radio.js",
       "src/ui/stores/context.js",
+      "src/ui/stores/location.js",
       "src/ui/stores/display.js"
     ],
     "external": ["cesium", "vue", "pinia"]
@@ -2943,6 +2945,7 @@
       "src/ui/stores/cctv.js",
       "src/ui/stores/radio.js",
       "src/ui/stores/context.js",
+      "src/ui/stores/location.js",
       "src/ui/stores/display.js"
     ],
     "external": [