feat(panels): render each panel's state classes from the store

A panel's collapsed, dock-pinned, dock-pinned-top, layout-auto-collapsed
and accordion-collapsed classes are drawn by its root's v-panel-state from
the gev-panel-chrome store. PanelChrome, its restore, the layout
controller, both rails and the side accordion present each panel's state
there instead of writing its classes; the rails call onCollapse(panel,
{collapsed, auto}). The directive applies a change in a synchronous
watcher, since the rails measure a panel in the task that opens or closes
it.

Destroying the chrome inside Cockpit now puts back the panels Cockpit's
entry closed while it can still present them. Without a shell, the voice
tools' set_panel_open reports that there is no panel to open. QA scripts
present the states they set instead of writing the classes.

scripts/package-boundaries.json

@@ -122,7 +122,8 @@
       "src/firstRunCopy.js",
       "src/ui/kit/UiButton.vue",
       "src/ui/stores/panelChrome.js",
-      "src/ui/rail/PanelCollapseButton.vue"
+      "src/ui/rail/PanelCollapseButton.vue",
+      "src/ui/rail/panelState.js"
     ],
     "external": ["vue", "pinia"]
   },
@@ -1048,7 +1049,8 @@
       "src/ui/stores/worldOverlayActions.js",
       "src/ui/stores/awarenessDirection.js",
       "src/ui/stores/hud.js",
-      "src/ui/stores/panelChrome.js"
+      "src/ui/stores/panelChrome.js",
+      "src/ui/rail/panelState.js"
     ],
     "external": ["cesium", "vue", "pinia"]
   },
@@ -3054,7 +3056,8 @@
       "src/ui/stores/hud.js",
       "src/ui/stores/firstRun.js",
       "src/firstRunCopy.js",
-      "src/ui/stores/panelChrome.js"
+      "src/ui/stores/panelChrome.js",
+      "src/ui/rail/panelState.js"
     ],
     "external": [
       "hls.js",
@@ -3863,7 +3866,8 @@
       "src/ui/panelRailCatalog.js",
       "src/ui/panelAccordion.js",
       "src/ui/vueRuntime.js",
-      "src/ui/stores/panelChrome.js"
+      "src/ui/stores/panelChrome.js",
+      "src/ui/rail/panelState.js"
     ],
     "external": ["vue", "pinia"]
   },