refactor: compose UI shell with explicit application operations and component owners

package.json

@@ -138,6 +138,8 @@
     "./ui/cockpit/math": "./src/cockpitMath.js",
     "./ui/cockpit/layout": "./src/cockpitUtilityLayout.js",
     "./ui/cockpit/vision": "./src/cockpitVisionPolicy.js",
-    "./ui/scenes": "./src/ui/scenes.js"
+    "./ui/scenes": "./src/ui/scenes.js",
+    "./ui/shell": "./src/ui/applicationShell.js",
+    "./ui/styles": "./src/ui/styles.js"
   }
 }