✨ 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/database/seeders/TestimonialSeeder.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Testimonial;
+use App\Models\Translation;
+use Illuminate\Database\Seeder;
+
+class TestimonialSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $testimonials = [
+            [
+                'name' => 'Marie Dupont',
+                'role' => 'CTO',
+                'company' => 'TechStartup',
+                'avatar' => null,
+                'text_key' => 'testimonial.marie.text',
+                'personality' => 'enthousiaste',
+                'project_id' => 1,
+                'display_order' => 1,
+            ],
+            [
+                'name' => 'Pierre Martin',
+                'role' => 'Lead Developer',
+                'company' => 'DevAgency',
+                'avatar' => null,
+                'text_key' => 'testimonial.pierre.text',
+                'personality' => 'professionnel',
+                'project_id' => 2,
+                'display_order' => 2,
+            ],
+            [
+                'name' => 'Sophie Bernard',
+                'role' => 'Product Manager',
+                'company' => 'InnovateCorp',
+                'avatar' => null,
+                'text_key' => 'testimonial.sophie.text',
+                'personality' => 'sage',
+                'project_id' => null,
+                'display_order' => 3,
+            ],
+            [
+                'name' => 'Thomas Leroy',
+                'role' => 'Freelance Designer',
+                'company' => null,
+                'avatar' => null,
+                'text_key' => 'testimonial.thomas.text',
+                'personality' => 'sarcastique',
+                'project_id' => null,
+                'display_order' => 4,
+            ],
+        ];
+
+        foreach ($testimonials as $data) {
+            Testimonial::create($data);
+        }
+
+        // Traductions
+        $translations = [
+            [
+                'key' => 'testimonial.marie.text',
+                'fr' => "Travailler avec Célian a été une révélation ! Son approche créative et sa maîtrise technique ont transformé notre projet. Je recommande sans hésitation !",
+                'en' => "Working with Célian was a revelation! His creative approach and technical mastery transformed our project. I highly recommend!",
+            ],
+            [
+                'key' => 'testimonial.pierre.text',
+                'fr' => "Code propre, architecture solide, communication claire. Célian sait exactement ce qu'il fait et le fait bien.",
+                'en' => "Clean code, solid architecture, clear communication. Célian knows exactly what he's doing and does it well.",
+            ],
+            [
+                'key' => 'testimonial.sophie.text',
+                'fr' => "Une personne rare qui combine vision produit et excellence technique. Les retours utilisateurs parlent d'eux-mêmes.",
+                'en' => "A rare person who combines product vision and technical excellence. User feedback speaks for itself.",
+            ],
+            [
+                'key' => 'testimonial.thomas.text',
+                'fr' => "Bon, j'avoue, au début je pensais que les devs ne comprenaient rien au design. Célian m'a prouvé le contraire. Presque agaçant.",
+                'en' => "Okay, I admit, at first I thought devs didn't understand design. Célian proved me wrong. Almost annoying.",
+            ],
+        ];
+
+        foreach ($translations as $t) {
+            Translation::updateOrCreate(
+                ['lang' => 'fr', 'key_name' => $t['key']],
+                ['value' => $t['fr']]
+            );
+            Translation::updateOrCreate(
+                ['lang' => 'en', 'key_name' => $t['key']],
+                ['value' => $t['en']]
+            );
+        }
+    }
+}