Redesign kiosk welcome screen with branding and clear entry flow.

Show Frontdesk icon, company welcome message, and a prominent Tap to begin step before visitor type selection.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Feature/FrontdeskPhase7Test.php

@@ -86,7 +86,9 @@ class FrontdeskPhase7Test extends TestCase
 
         $this->get(route('frontdesk.kiosk.device', $device->device_token))
             ->assertOk()
-            ->assertSee('Visitor Check-in');
+            ->assertSee('Visitor Check-in')
+            ->assertSee('Welcome to')
+            ->assertSee('Tap to begin');
 
         $this->assertTrue($device->fresh()->isOnline());
     }