fix: ensure books display in biblical order (Old Testament → New Testament)

- Modified offline storage to sort books by orderNum after IndexedDB retrieval
- Fixed book ordering issue where books appeared out of sequence
- Books now consistently display: Genesis → Revelation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/offline-storage.ts

@@ -210,11 +210,13 @@ class OfflineStorage {
 
   async getBooksForVersion(versionId: string): Promise<BibleBook[]> {
     await this.init()
-    return this.performTransaction('books', 'readonly', (store) => {
+    const books = await this.performTransaction('books', 'readonly', (store) => {
       const booksStore = store as IDBObjectStore
       const index = booksStore.index('versionId')
       return index.getAll(versionId)
     })
+    // Sort books by orderNum to maintain biblical order
+    return books.sort((a, b) => (a.orderNum || 0) - (b.orderNum || 0))
   }
 
   // Download progress management