Changelog: [1.8.2] -> [1.8.4] | NotebookLM Tools by NLMTools.com

## [1.8.4] - 2026-05-08

- Filter Artifacts by Source — narrow the artifacts list to specific sources

- New "Source" filter pill in the artifacts filter bar with searchable source list

- Multi-select sources with live count badge on the filter button

- "Has deleted/orphaned sources" toggle to surface artifacts whose sources were removed

- Clear-all action to reset the source filter in one click

- Source-to-Artifact CSV Export — see which sources fed each artifact

- CSV columns: artifact_title, artifact_type, artifact_created_at, source_count, deleted_source_count, source_titles

## [1.8.3] - 2026-05-07

- Notebook Permissions & Roles — see your access level on every notebook

- Owner / Editor / Viewer

- Viewer Mode — read-only support for shared notebooks

## [1.8.2] - 2026-04-24

- Cross-Notebook Search — delete actions in search results

- Delete buttons on notebook and source rows in cross-notebook search