fix(application): clarify deployment type precedence logic

- Prioritize real private keys (id > 0) first
- Check source second before falling back to zero key
- Remove isDev() check that was restricting zero key behavior in dev
- Remove exception throw, use 'other' as safe fallback
- Expand test coverage to validate all precedence scenarios

app/Models/Application.php

@@ -989,17 +989,24 @@ public function isPRDeployable(): bool
 
     public function deploymentType()
     {
-        if (isDev() && data_get($this, 'private_key_id') === 0) {
+        $privateKeyId = data_get($this, 'private_key_id');
+
+        // Real private key (id > 0) always takes precedence
+        if ($privateKeyId !== null && $privateKeyId > 0) {
             return 'deploy_key';
         }
-        if (! is_null(data_get($this, 'private_key_id'))) {
-            return 'deploy_key';
-        } elseif (data_get($this, 'source')) {
+
+        // GitHub/GitLab App source
+        if (data_get($this, 'source')) {
             return 'source';
-        } else {
-            return 'other';
         }
-        throw new \Exception('No deployment type found');
+
+        // Localhost key (id = 0) when no source is configured
+        if ($privateKeyId === 0) {
+            return 'deploy_key';
+        }
+
+        return 'other';
     }
 
     public function could_set_build_commands(): bool

tests/Unit/ApplicationDeploymentTypeTest.php

@@ -1,11 +1,54 @@
 <?php
 
 use App\Models\Application;
+use App\Models\GithubApp;
 
-it('treats zero private key id as deploy key', function () {
-    $application = new Application();
+it('returns deploy_key when private_key_id is a real key', function () {
+    $application = new Application;
+    $application->private_key_id = 5;
+
+    expect($application->deploymentType())->toBe('deploy_key');
+});
+
+it('returns deploy_key when private_key_id is a real key even with source', function () {
+    $application = Mockery::mock(Application::class)->makePartial();
+    $application->private_key_id = 5;
+    $application->shouldReceive('getAttribute')->with('source')->andReturn(new GithubApp);
+    $application->shouldReceive('getAttribute')->with('private_key_id')->andReturn(5);
+
+    expect($application->deploymentType())->toBe('deploy_key');
+});
+
+it('returns source when private_key_id is null and source exists', function () {
+    $application = Mockery::mock(Application::class)->makePartial();
+    $application->private_key_id = null;
+    $application->shouldReceive('getAttribute')->with('source')->andReturn(new GithubApp);
+    $application->shouldReceive('getAttribute')->with('private_key_id')->andReturn(null);
+
+    expect($application->deploymentType())->toBe('source');
+});
+
+it('returns source when private_key_id is zero and source exists', function () {
+    $application = Mockery::mock(Application::class)->makePartial();
+    $application->private_key_id = 0;
+    $application->shouldReceive('getAttribute')->with('source')->andReturn(new GithubApp);
+    $application->shouldReceive('getAttribute')->with('private_key_id')->andReturn(0);
+
+    expect($application->deploymentType())->toBe('source');
+});
+
+it('returns deploy_key when private_key_id is zero and no source', function () {
+    $application = new Application;
     $application->private_key_id = 0;
     $application->source = null;
 
     expect($application->deploymentType())->toBe('deploy_key');
 });
+
+it('returns other when private_key_id is null and no source', function () {
+    $application = Mockery::mock(Application::class)->makePartial();
+    $application->shouldReceive('getAttribute')->with('source')->andReturn(null);
+    $application->shouldReceive('getAttribute')->with('private_key_id')->andReturn(null);
+
+    expect($application->deploymentType())->toBe('other');
+});