- Add CalendarConfig to schema with OAuth2 credentials support
- Implement CalendarTool with list_events, create_event, and check_availability actions
- Add email parser utility for extracting meeting information from emails
- Register calendar tool in agent loop (auto-loaded when enabled)
- Add calendar skill documentation
- Update AGENTS.md with calendar integration instructions
- Add CALENDAR_SETUP.md with complete setup guide
- Add Google Calendar API dependencies to pyproject.toml
- Support time parsing for 'today', 'tomorrow', and various time formats (12/24-hour, am/pm)
- Ensure timezone-aware datetime handling for Google Calendar API compatibility
