Delete User Account

Request for account deletion with optional feedback and ownership transfers.

Combines cancellation feedback with team ownership transfers so the entire delete-account flow is a single atomic request.

Attributes: reason: Selected cancellation reason (e.g. 'Pricing'). feedback_text: Free-form feedback from the user. ownership_transfers: Mapping of team_id to new_owner_id for teams the user owns that still have other members.

Response for user deletion.