Expand test coverage and improve transaction management code.

app/Repositories/Journal/JournalRepositoryInterface.php

@@ -41,6 +41,14 @@ use Illuminate\Support\MessageBag;
 interface JournalRepositoryInterface
 {
 
+    /**
+     * Search in journal descriptions.
+     *
+     * @param string $search
+     * @return Collection
+     */
+    public function searchJournalDescriptions(string $search): Collection;
+
     /**
      * Get all transaction journals with a specific type, regardless of user.
      *