✨ Add testimonials page with personality-styled cards (Story 2.6)

- Add testimonials table migration with personality enum
- Create Testimonial model with HasTranslations trait
- Add TestimonialSeeder with 4 test testimonials
- Create TestimonialController and TestimonialResource
- Add useFetchTestimonials composable
- Create TestimonialCard component with personality-based styling
- Add temoignages.vue page with loading/error states
- Add testimonials translations in FR/EN

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

api/routes/api.php

@@ -2,6 +2,7 @@
 
 use App\Http\Controllers\Api\ProjectController;
 use App\Http\Controllers\Api\SkillController;
+use App\Http\Controllers\Api\TestimonialController;
 use Illuminate\Support\Facades\Route;
 
 Route::get('/health', function () {
@@ -12,3 +13,4 @@ Route::get('/projects', [ProjectController::class, 'index']);
 Route::get('/projects/{slug}', [ProjectController::class, 'show']);
 Route::get('/skills', [SkillController::class, 'index']);
 Route::get('/skills/{slug}/projects', [SkillController::class, 'projects']);
+Route::get('/testimonials', [TestimonialController::class, 'index']);