What: New hook event that fires when Claude Code shuts down, enabling cleanup actions How to use:
# Configure in your hooks file to run cleanup on exit:
# Hook will receive: {hook_event_name: "SessionEnd", reason: "logout" | "other"}Details:
- Triggers before Claude Code exits
- Provides shutdown reason (logout vs other termination)
- Allows external programs to perform cleanup
- 2-second timeout ensures quick shutdown