• Convert all 5 recipe examples to async/await patterns matching current SDK interface
  • error_handling.py: Async/await conversion with proper event handling
  • managing_local_files.py: Async conversion with non-blocking user input
  • multiple_sessions.py: Full async/await conversion with proper cleanup
  • persisting_sessions.py: Async/await conversion with session management updates
  • pr_visualization.py: Async conversion with async subprocess handling

Root cause: SDK interface changed from synchronous to asynchronous (async/await) API. All examples now use correct async patterns with proper error handling and cleanup."