refactor: supprimer tout le code legacy MVC/Twig/Stimulus

Supprime toutes les couches pré-DDD pour ne garder que l'architecture
hexagonale (src/Domain/), les entités Doctrine et le front Vue.js SPA.

Supprimé :
- src/Controller/ (9 controllers Twig, garde SecurityController)
- src/Service/, src/Message/, src/MessageHandler/ (services et messages legacy)
- src/Manager/, src/Twig/, src/Form/ (UI legacy)
- src/Event/, src/EventListener/, src/EventSubscriber/QueueStatusSubscriber
- src/Client/MangadexClient.php (doublon du Domain)
- src/Interface/, src/Factory/, src/DataFixtures/, src/Scheduler/MainSchedule
- templates/ (tous sauf vue/ et base retiré — SecurityController = pur JSON)
- assets/controllers/ (20 Stimulus controllers), app.js, bootstrap.js, controllers.json

Modifié :
- config/routes.yaml : suppression du chargement des controllers legacy
- config/packages/messenger.yaml : suppression des routes legacy
- config/services.yaml : suppression des bindings legacy + entrées Domain\Import fantômes
- webpack.config.js : suppression entry 'app' et enableStimulusBridge
- src/Entity/Chapter.php : suppression #[Broadcast] (Turbo Streams legacy)

Déplacé :
- src/Factory/*.php → tests/Factory/ (namespace App\Tests\Factory)

tests/Factory/MangaFactory.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace App\Tests\Factory;
+
+use App\Entity\Manga;
+use App\Repository\MangaRepository;
+use Zenstruck\Foundry\ModelFactory;
+use Zenstruck\Foundry\Proxy;
+use Zenstruck\Foundry\RepositoryProxy;
+
+/**
+ * @extends ModelFactory<Manga>
+ *
+ * @method        Manga|Proxy                     create(array|callable $attributes = [])
+ * @method static Manga|Proxy                     createOne(array $attributes = [])
+ * @method static Manga|Proxy                     find(object|array|mixed $criteria)
+ * @method static Manga|Proxy                     findOrCreate(array $attributes)
+ * @method static Manga|Proxy                     first(string $sortedField = 'id')
+ * @method static Manga|Proxy                     last(string $sortedField = 'id')
+ * @method static Manga|Proxy                     random(array $attributes = [])
+ * @method static Manga|Proxy                     randomOrCreate(array $attributes = [])
+ * @method static MangaRepository|RepositoryProxy repository()
+ * @method static Manga[]|Proxy[]                 all()
+ * @method static Manga[]|Proxy[]                 createMany(int $number, array|callable $attributes = [])
+ * @method static Manga[]|Proxy[]                 createSequence(iterable|callable $sequence)
+ * @method static Manga[]|Proxy[]                 findBy(array $attributes)
+ * @method static Manga[]|Proxy[]                 randomRange(int $min, int $max, array $attributes = [])
+ * @method static Manga[]|Proxy[]                 randomSet(int $number, array $attributes = [])
+ */
+final class MangaFactory extends ModelFactory
+{
+    /**
+     * @see https://symfony.com/bundles/ZenstruckFoundryBundle/current/index.html#factories-as-services
+     *
+     * @todo inject services if required
+     */
+    /**
+     * @see https://symfony.com/bundles/ZenstruckFoundryBundle/current/index.html#model-factories
+     *
+     * @todo add your default values here
+     */
+    protected function getDefaults(): array
+    {
+        $title = self::faker()->words(rand(1, 3), true);
+
+        return [
+            'title' => $title,
+            'slug' => strtolower(str_replace(' ', '-', $title)),
+            'imageUrl' => self::faker()->optional()->imageUrl(),
+            'publicationYear' => self::faker()->optional()->year(),
+            'description' => self::faker()->optional()->text(),
+            'genres' => self::faker()->optional()->words(rand(1, 5)),
+            'createdAt' => \DateTimeImmutable::createFromMutable(self::faker()->dateTime()),
+            'rating' => self::faker()->optional()->randomFloat(1, 0, 10),
+            'author' => self::faker()->optional()->name(),
+            'externalId' => self::faker()->optional()->uuid(),
+            'status' => self::faker()->optional()->randomElement(['ongoing', 'completed', 'hiatus']),
+            'thumbnailUrl' => self::faker()->optional()->imageUrl(150, 150),
+            'monitored' => self::faker()->boolean(),
+            'AlternativeSlugs' => self::faker()->optional()->words(3),
+        ];
+    }
+
+    /**
+     * @see https://symfony.com/bundles/ZenstruckFoundryBundle/current/index.html#initialization
+     */
+    protected function initialize(): self
+    {
+        return $this
+            // ->afterInstantiate(function(Manga $manga): void {})
+        ;
+    }
+
+    protected static function getClass(): string
+    {
+        return Manga::class;
+    }
+}