notebooklm-upstream-notebook-get-replaces-source-list

In notebooklm-mcp-cli v0.5.17, the notebook_get tool returns both notebook metadata AND the sources list — there is no separate source_list tool. Any skill or workflow referencing source_list must be updated to use notebook_get instead. This is a breaking tool-name change from the custom 42-tool wrapper which had explicit source_list.