feat(ui): render every application template except the loading screen as a Vue view

The scene chrome, cockpit, Display controls, command dock, layer panels,
Context rail, welcome card and Provider Settings move verbatim into
src/ui/views and mount into their hosts before the page is translated and
wired. Each view renders the same elements, attributes and text as its
template; Vue keeps whitespace between elements as one space, and no view
markup sits under a white-space: pre rule.

Template asset URLs stay literal, view files are left out of Prettier so
the markup is not reflowed, and the Node component loader moves to build/
and is exported as build/register-vue for host test runners. Hosts that do
not initialize Core's locale pass localePicker: false instead of editing
the markup.

src/ui/recentImagery.test.mjs

@@ -190,7 +190,7 @@ class FakeElement {
   }
 }
 
-/** The static rail panel skeleton from templates/context.html. */
+/** The static rail panel skeleton from views/ContextView.vue. */
 function fakeDocument() {
   const document = {
     documentElement: { clientWidth: 1200 },