Let the API / MCP connection set a contact's Address and Country

Contacts imported in bulk through the API / AI (MCP) connection cannot have their **Address** or **Country** set:

• The address can only be written into the activity/note field, so it then has to be copied into the dedicated Address field by hand.
• country and country_code can be sent, but the Country dropdown in the app still shows the default value (Afghanistan) instead of the real country.

Please make the dedicated Address and Country fields fully writable from the API / MCP connection, so large CSV contact lists can be imported end-to-end without manual editing afterwards.