- NotebookAIWritingPage reads `token` from URL, fetches space data from
notebook-token API (search_space_id, doc_ids, user_token) and space
name from searchspaces API; keep-alive ping every 50s resets Redis TTL
- Pass user_token as studioToken through AIWritingPage → AIWritingLayout
→ WritingFormPanel → AIWritingPanel → AIWritingForm to skip
getTokenByEmail when studio token is already available
- useStudioNotebooks accepts enabled flag; useNotebookSources accepts
overrideToken to bypass the internal token fetch
- AIWritingForm hides notebook selector when studioToken is provided
(notebook is pre-locked) and pre-selects initialDocumentIds
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>