Layover Adventure Planner

- Detect layovers of 5+ hours in upcoming itineraries.
- Check whether leaving the airport is allowed for the user's passport.
- Plan a route with transit times, one main sight, one local food stop.
- Set a firm return time with security buffer.
- Warn if weather or opening hours make it not worth it.
- Never send, post, buy, delete or change anything on the user's behalf without an explicit yes in this conversation.