IndexedDB migration: add ability to see mnemonic and download settings & contacts

src/services/indexedDBMigrationService.ts

@@ -21,6 +21,8 @@
  * @since 2024
  */
 
+import "dexie-export-import";
+
 import { PlatformServiceFactory } from "./PlatformServiceFactory";
 import { db, accountsDBPromise } from "../db/index";
 import { Contact, ContactMethod } from "../db/tables/contacts";
@@ -108,6 +110,12 @@ export interface MigrationResult {
   warnings: string[];
 }
 
+export async function getDexieExportBlob(): Promise<Blob> {
+  await db.open();
+  const blob = db.export({ prettyJson: true });
+  return blob;
+}
+
 /**
  * Retrieves all contacts from the Dexie (IndexedDB) database
  *