curl --request POST \
  --url https://aarwcjjzhlmkgdwrisyt.supabase.co/functions/v1/auth-refresh \
  --header 'Content-Type: application/json' \
  --data '
{
  "refresh_token": "eyJhbGciOiJIUzI1NiJ9..."
}
'

{
  "success": true,
  "status": 200,
  "data": {
    "user": {
      "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "phone": "+2348012345678"
    },
    "session": {
      "access_token": "eyJhbGciOiJIUzI1NiJ9...",
      "refresh_token": "eyJhbGciOiJIUzI1NiJ9...",
      "expires_in": 3600,
      "token_type": "bearer"
    }
  }
}