Initial commit — Diabetix V2

Application Laravel 12 + Inertia + Vue 3 + Tailwind.
Fonctionnalités : dashboard glycémique, saisie de mesures, courbe SVG,
statistiques (jour/semaine/mois/trimestre), défis & badges, chat coach IA
(Gemini), paramètres profil avec palette de couleurs, pages auth redessinées,
emails transactionnels via Resend avec thème Diabetix.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/tests/Feature/Auth/AuthenticationTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Tests\Feature\Auth;
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AuthenticationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_login_screen_can_be_rendered(): void
+    {
+        $response = $this->get('/login');
+
+        $response->assertStatus(200);
+    }
+
+    public function test_users_can_authenticate_using_the_login_screen(): void
+    {
+        $user = User::factory()->create();
+
+        $response = $this->post('/login', [
+            'email' => $user->email,
+            'password' => 'password',
+        ]);
+
+        $this->assertAuthenticated();
+        $response->assertRedirect(route('dashboard', absolute: false));
+    }
+
+    public function test_users_can_not_authenticate_with_invalid_password(): void
+    {
+        $user = User::factory()->create();
+
+        $this->post('/login', [
+            'email' => $user->email,
+            'password' => 'wrong-password',
+        ]);
+
+        $this->assertGuest();
+    }
+
+    public function test_users_can_logout(): void
+    {
+        $user = User::factory()->create();
+
+        $response = $this->actingAs($user)->post('/logout');
+
+        $this->assertGuest();
+        $response->assertRedirect('/');
+    }
+}