As mentioned, not being able to move a config file is not a reason for classic confinement. Plenty of electron snaps work with the default value for $HOME (ie, the snap-specific ~/snap/ds2/<revision>) and if your having trouble, I encourage you to create a new topic in the ‘snapcraft’ category. While I strongly suspect your snap can be made to work with standard permissions, there is also The personal-files interface (but use of it also needs justification not unlike classic).