ENH - migrate garage to Sky UI

Replace the Garage screen's direct Konsta surface with the Sky-owned UI primitives. Remove the provider footer payload and Garage EasyShare support because neither belongs in the vehicle overview.

frontend/testserver/index.cjs

@@ -4357,15 +4357,6 @@ const easyShareCatalog = [
     subtitle: 'mia@ifruit.com',
     title: 'Project handoff',
   },
-  {
-    appId: 'garage',
-    copyText: 'Comet Retro Custom\nSKY 2048',
-    id: 'SKY 2048',
-    kind: 'document',
-    link: 'skyphone://garage/vehicle/SKY%202048',
-    subtitle: 'SKY 2048',
-    title: 'Comet Retro Custom',
-  },
   {
     appId: 'house',
     copyText: 'Vespucci Canals Apartment',
@@ -7140,7 +7131,6 @@ app.post('/api/:endpoint', (request, response) => {
     response.json({
       success: true,
       data: {
-        system: 'jg',
         valet: {
           account: 'bank',
           enabled: true,