fix(import): extraire les images CBZ vers le stockage individuel

Corrige l'import de chapitres/volumes CBZ qui stockait le chemin du fichier
CBZ comme pagesDirectory. Le reader ne trouvait aucune image car
LegacyChapterRepository attend un dossier d'images individuelles.

- Déplace ImageStorageInterface dans Shared (storeChapterImages + extractFromCbz + countCbzImages)
- Crée ImageStorageManager dans Shared/Infrastructure (extraction ZIP + copie)
- Supprime LocalImageStorage et l'ancienne interface dans Scraping
- Refactore ImportChapterHandler et ImportVolumeHandler pour utiliser ImageStorageInterface
- Corrige LegacyChapterRepository : construit l'URL depuis basename(pagesDirectory)
  au lieu de chapterId (fix pour les volumes partagés)

src/Domain/Shared/Infrastructure/Service/ImageStorageManager.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace App\Domain\Shared\Infrastructure\Service;
+
+use App\Domain\Shared\Domain\Contract\ImageStorageInterface;
+use ZipArchive;
+
+class ImageStorageManager implements ImageStorageInterface
+{
+    public function __construct(private string $storagePath)
+    {
+    }
+
+    public function storeChapterImages(string $targetId, array $localImagePaths): string
+    {
+        $targetDir = $this->storagePath . '/pages/' . $targetId;
+
+        if (!is_dir($targetDir)) {
+            mkdir($targetDir, 0755, true);
+        }
+
+        sort($localImagePaths);
+
+        foreach ($localImagePaths as $index => $localPath) {
+            $extension = pathinfo($localPath, PATHINFO_EXTENSION) ?: 'jpg';
+            $targetFile = sprintf('%s/%03d.%s', $targetDir, $index + 1, $extension);
+            copy($localPath, $targetFile);
+        }
+
+        return $targetDir;
+    }
+
+    public function extractFromCbz(string $targetId, string $cbzBinary): string
+    {
+        $targetDir = $this->storagePath . '/pages/' . $targetId;
+
+        if (!is_dir($targetDir)) {
+            mkdir($targetDir, 0755, true);
+        }
+
+        $tmpFile = tempnam(sys_get_temp_dir(), 'cbz_');
+        file_put_contents($tmpFile, $cbzBinary);
+
+        $zip = new ZipArchive();
+        if ($zip->open($tmpFile) !== true) {
+            unlink($tmpFile);
+            throw new \RuntimeException('Failed to open CBZ file as ZIP archive');
+        }
+
+        $imageEntries = [];
+        for ($i = 0; $i < $zip->numFiles; $i++) {
+            $name = $zip->getNameIndex($i);
+            if (preg_match('/\.(jpg|jpeg|png|webp|gif)$/i', $name)) {
+                $imageEntries[] = ['index' => $i, 'name' => $name];
+            }
+        }
+
+        usort($imageEntries, fn ($a, $b) => strcmp($a['name'], $b['name']));
+
+        foreach ($imageEntries as $seq => $entry) {
+            $extension = strtolower(pathinfo($entry['name'], PATHINFO_EXTENSION)) ?: 'jpg';
+            $targetFile = sprintf('%s/%03d.%s', $targetDir, $seq + 1, $extension);
+            $content = $zip->getFromIndex($entry['index']);
+            file_put_contents($targetFile, $content);
+        }
+
+        $zip->close();
+        unlink($tmpFile);
+
+        return $targetDir;
+    }
+
+    public function countCbzImages(string $cbzBinary): int
+    {
+        $tmpFile = tempnam(sys_get_temp_dir(), 'cbz_');
+        file_put_contents($tmpFile, $cbzBinary);
+
+        $zip = new ZipArchive();
+        if ($zip->open($tmpFile) !== true) {
+            unlink($tmpFile);
+            throw new \RuntimeException('Failed to open CBZ file as ZIP archive');
+        }
+
+        $count = 0;
+        for ($i = 0; $i < $zip->numFiles; $i++) {
+            $name = $zip->getNameIndex($i);
+            if (preg_match('/\.(jpg|jpeg|png|webp|gif)$/i', $name)) {
+                $count++;
+            }
+        }
+
+        $zip->close();
+        unlink($tmpFile);
+
+        return $count;
+    }
+}