Kalendar: book and log meetings

Kalendar is the booking surface. When a prospect says yes, put the meeting here. It feeds Outkomes and the Klose count automatically.

1. Open Kalendar and add the booking.
2. Enter the prospect. If they're new, a name plus an email or LinkedIn profile creates the contact on the spot with the same validation as everywhere else.
3. Pick a future date and time, and the channel that produced the meeting.
4. The meeting starts at Booked. Move it along as reality unfolds.