Update user profile fields (upsert pattern).
Documentation Index
Fetch the complete documentation index at: https://docs.vizochok.com/llms.txt
Use this file to discover all available pages before exploring further.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Successful Response
Unique user identifier (provided by the client application)
Preferred language code (e.g. 'uk', 'en')
Dietary preferences and restrictions (e.g. {"vegan": true})
List of preferred brand names for personalized recommendations