Initial commit: Any-LLM Gateway with Laravel Admin Interface

- Any-LLM Gateway setup with Docker Compose
- Laravel 11 admin interface with Livewire
- Dashboard with usage statistics and charts
- Gateway Users management with budget tracking
- API Keys management with revocation
- Budget templates with assignment
- Usage Logs with filtering and CSV export
- Model Pricing management with calculator
- PostgreSQL database integration
- Complete authentication system for admins

laravel-app/tests/Feature/Auth/AuthenticationTest.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace Tests\Feature\Auth;
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Volt\Volt;
+use Tests\TestCase;
+
+class AuthenticationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_login_screen_can_be_rendered(): void
+    {
+        $response = $this->get('/login');
+
+        $response
+            ->assertOk()
+            ->assertSeeVolt('pages.auth.login');
+    }
+
+    public function test_users_can_authenticate_using_the_login_screen(): void
+    {
+        $user = User::factory()->create();
+
+        $component = Volt::test('pages.auth.login')
+            ->set('form.email', $user->email)
+            ->set('form.password', 'password');
+
+        $component->call('login');
+
+        $component
+            ->assertHasNoErrors()
+            ->assertRedirect(route('dashboard', absolute: false));
+
+        $this->assertAuthenticated();
+    }
+
+    public function test_users_can_not_authenticate_with_invalid_password(): void
+    {
+        $user = User::factory()->create();
+
+        $component = Volt::test('pages.auth.login')
+            ->set('form.email', $user->email)
+            ->set('form.password', 'wrong-password');
+
+        $component->call('login');
+
+        $component
+            ->assertHasErrors()
+            ->assertNoRedirect();
+
+        $this->assertGuest();
+    }
+
+    public function test_navigation_menu_can_be_rendered(): void
+    {
+        $user = User::factory()->create();
+
+        $this->actingAs($user);
+
+        $response = $this->get('/dashboard');
+
+        $response
+            ->assertOk()
+            ->assertSeeVolt('layout.navigation');
+    }
+
+    public function test_users_can_logout(): void
+    {
+        $user = User::factory()->create();
+
+        $this->actingAs($user);
+
+        $component = Volt::test('layout.navigation');
+
+        $component->call('logout');
+
+        $component
+            ->assertHasNoErrors()
+            ->assertRedirect('/');
+
+        $this->assertGuest();
+    }
+}