Update:Remove support for metadata.abs, added script to create metadata.json files if they dont exist

server/models/Book.js

@@ -211,6 +211,32 @@ class Book extends Model {
     }
   }
 
+  getAbsMetadataJson() {
+    return {
+      tags: this.tags || [],
+      chapters: this.chapters?.map(c => ({ ...c })) || [],
+      title: this.title,
+      subtitle: this.subtitle,
+      authors: this.authors.map(a => a.name),
+      narrators: this.narrators,
+      series: this.series.map(se => {
+        const sequence = se.bookSeries?.sequence || ''
+        if (!sequence) return se.name
+        return `${se.name} #${sequence}`
+      }),
+      genres: this.genres || [],
+      publishedYear: this.publishedYear,
+      publishedDate: this.publishedDate,
+      publisher: this.publisher,
+      description: this.description,
+      isbn: this.isbn,
+      asin: this.asin,
+      language: this.language,
+      explicit: !!this.explicit,
+      abridged: !!this.abridged
+    }
+  }
+
   /**
    * Initialize model
    * @param {import('../Database').sequelize} sequelize