Update DocumentSeeder to use DocumentService::createDocument

Removes direct Document::create() calls that referenced the dropped
title/content/rendered_html columns. Initial seed now creates the
default-locale translation through the service.

src/database/seeders/DocumentSeeder.php

@@ -2,7 +2,6 @@
 
 namespace Database\Seeders;
 
-use App\Models\Document;
 use Illuminate\Database\Seeder;
 
 class DocumentSeeder extends Seeder
@@ -12,43 +11,23 @@ class DocumentSeeder extends Seeder
      */
     public function run(): void
     {
-        // 既存のドキュメントがある場合はスキップ
-        if (Document::count() > 0) {
+        if (\App\Models\Document::count() > 0) {
             $this->command->info('Documents already exist. Skipping...');
             return;
         }
 
-        $documents = [
-            [
-                'title' => 'Home',
-                'path' => 'Home.md',
-                'slug' => 'home',
-                'content' => $this->getHomeContent(),
-            ],
-            [
-                'title' => 'Getting Started',
-                'path' => 'Getting Started.md',
-                'slug' => 'getting-started',
-                'content' => $this->getGettingStartedContent(),
-            ],
-            [
-                'title' => 'Markdown Guide',
-                'path' => 'Markdown Guide.md',
-                'slug' => 'markdown-guide',
-                'content' => $this->getMarkdownGuideContent(),
-            ],
+        $service = app(\App\Services\DocumentService::class);
+        $defaultLocale = config('app.locale', 'en');
+
+        $docs = [
+            ['title' => 'Home', 'content' => $this->getHomeContent()],
+            ['title' => 'Getting Started', 'content' => $this->getGettingStartedContent()],
+            ['title' => 'Markdown Guide', 'content' => $this->getMarkdownGuideContent()],
         ];
 
-        foreach ($documents as $doc) {
-            Document::create([
-                'title' => $doc['title'],
-                'path' => $doc['path'],
-                'slug' => $doc['slug'],
-                'content' => $doc['content'],
-                'rendered_html' => Document::renderMarkdown($doc['content']),
-            ]);
-
-            $this->command->info("Created: {$doc['title']}");
+        foreach ($docs as $d) {
+            $service->createDocument($d['title'], $d['content'], null, $defaultLocale);
+            $this->command->info("Created: {$d['title']}");
         }
 
         $this->command->info('Initial documents created successfully!');