feat(server): improve private key and cloud link flows

Add server private key generation from the dropdown, prevent deleting
private keys that are still in use, and close cloud provider link modals
after successful linking.

tests/Feature/Security/PrivateKeyDropdownTest.php

@@ -2,8 +2,10 @@
 
 use App\Livewire\Security\PrivateKey\Create;
 use App\Livewire\Security\PrivateKey\Index;
+use App\Livewire\Security\PrivateKey\Show;
 use App\Models\InstanceSettings;
 use App\Models\PrivateKey;
+use App\Models\Server;
 use App\Models\Team;
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
@@ -95,3 +97,38 @@ test('github app badge appears before the save button in the title row', functio
         ->and($view)->toContain('<x-forms.button canGate="update" :canResource="$private_key" type="submit">')
         ->and($badgePosition)->toBeLessThan($saveButtonPosition);
 });
+
+test('used private key details disable delete with an explanation', function () {
+    $privateKey = PrivateKey::factory()->create([
+        'team_id' => $this->team->id,
+    ]);
+
+    Server::factory()->create([
+        'team_id' => $this->team->id,
+        'private_key_id' => $privateKey->id,
+    ]);
+
+    $this->get(route('security.private-key.show', [
+        'private_key_uuid' => $privateKey->uuid,
+    ]))
+        ->assertSuccessful()
+        ->assertSee('This private key is currently used by a server, application, or Git app and cannot be deleted.', false)
+        ->assertSee('disabled', false);
+});
+
+test('used private key delete action keeps the key and shows an error', function () {
+    $privateKey = PrivateKey::factory()->create([
+        'team_id' => $this->team->id,
+    ]);
+
+    Server::factory()->create([
+        'team_id' => $this->team->id,
+        'private_key_id' => $privateKey->id,
+    ]);
+
+    Livewire::test(Show::class, ['private_key_uuid' => $privateKey->uuid])
+        ->call('delete')
+        ->assertDispatched('error');
+
+    expect($privateKey->fresh())->not->toBeNull();
+});