fix: restore missing notebook selection modal UI

fix(artifacts): change mind map and rich widget fallback to prompt opening notebooklm instead of dumping json

fix(artifacts): enable inline audio/video playback and fix report rendering

Bypass extension CSP restrictions by opening external audio and video URLs in new tabs

Refactor viewer.js routing to properly render data URIs and typed media outside iframes

Fix viewer to correctly parse infographic types from sidepanel to avoid iframe CORS blocks

Fix base64 decoding for text artifacts and prevent background worker suspension

Fix CORS for Audio/Video and Data URIs for Text Artifacts

Bypass artifact viewer for Google Docs links to fix slide deck viewing

Fix artifact viewer to support non-image studio artifacts via iframe and text formats

Update README with Sidebar and Viewer features

Initial commit of Anything to NotebookLM Pro