Is Sidebar for NotebookLM safe?

Adds a sidebar for organizing NotebookLM notebooks with folders, favorites, and search.

This extension shows a NotebookLM-focused sidebar where you can create color-coded folders, drag notebooks into folders, mark favorites, and filter notebooks by name. It also supports adjustable sidebar width, light and dark themes, slide prompt generation, and export/import of organization settings. The store description says organization data is stored locally and is not sent to external servers.