fix(ui): use solid surfaces for deployment indicator states

Remove deployment opacity fading and translucent dark-theme surfaces, and drop the global listbox hover background rule.

tests/Feature/ListboxTriggerTruncationTest.php

@@ -22,13 +22,6 @@ test('listbox trigger height matches shared inputs', function () {
         ->toMatch('/\.application-settings-workspace \.listbox-trigger[^}]*height: 2rem;/s');
 });
 
-test('listbox trigger uses an opaque background on hover', function () {
-    $css = file_get_contents(resource_path('css/app.css'));
-
-    expect($css)
-        ->toMatch('/\.listbox-trigger:hover \{[^}]*background: var\(--coollabs-fill\);/s');
-});
-
 test('listbox component uses shared trigger label truncation', function () {
     $html = Blade::render(<<<'BLADE'
         <x-forms.listbox id="longOption" label="Example"