v0.3.4

Added

• Notebook metadata export - Added notebook metadata APIs and CLI export with a simplified sources list
  • New notebooklm metadata command with human-readable and --json output
  • New NotebookMetadata and SourceSummary public types
  • New client.notebooks.get_metadata() helper
• Cinematic Video Overview support - Added cinematic generation and download flows
  • notebooklm generate video --format cinematic
• Infographic styles - Added CLI support for selecting infographic visual styles
• source delete-by-title - Added explicit exact-title deletion command for sources

Fixed

• Research imports on timeout - CLI research imports now retry on timeout with backoff
• Metadata command behavior - Aligned metadata output and implementation with current CLI patterns
• Regional login cookies - Improved browser login handling for regional Google domains
• Notebook summary parsing - Fixed notebook summary response parsing
• Source delete UX - Improved source delete resolution, ambiguity handling, and title-vs-ID errors
• Empty downloads - Raise an error instead of producing zero-byte files
• Module execution - Added python -m notebooklm support

Changed

• Documentation refresh - Updated release, development, CLI, README, and Python API docs for current commands, APIs, and uv workflows
• Public API surface - Exported NotebookMetadata, SourceSummary, and InfographicStyle