feat(ui): unify resource headings with responsive action menus

Add responsive overflow handling and dedicated action menus for application,
service, database, and server headings, while improving upgrade and email
settings flows and returning 404s for missing deployment environments.

tests/Feature/NotificationEmailResendLayoutTest.php

@@ -0,0 +1,25 @@
+<?php
+
+test('team notification resend section matches instance email layout', function () {
+    $instance = file_get_contents(resource_path('views/livewire/settings-email.blade.php'));
+    $team = file_get_contents(resource_path('views/livewire/notifications/email.blade.php'));
+
+    preg_match('/settings-section title="Resend".*?<\/x-application.settings-section>/s', $instance, $instanceResend);
+    preg_match('/settings-section title="Resend".*?<\/x-application.settings-section>/s', $team, $teamResend);
+
+    expect($instanceResend[0] ?? '')
+        ->not->toBeEmpty()
+        ->toContain('grid gap-4 lg:grid-cols-2')
+        ->toContain('id="resendEnabled"')
+        ->toContain('id="resendApiKey"')
+        ->not->toContain('lg:col-span-2')
+        ->not->toContain('description=');
+
+    expect($teamResend[0] ?? '')
+        ->not->toBeEmpty()
+        ->toContain('grid gap-4 lg:grid-cols-2')
+        ->toContain('id="resendEnabled"')
+        ->toContain('id="resendApiKey"')
+        ->not->toContain('lg:col-span-2')
+        ->not->toContain('description=');
+});