Suggestion: Use persist option to keep user home directory clean

It would be nice to have config directories sandboxed and keep HOME directory less cluttered.

From [Flatpak Sandbox Permisions](https://docs.flatpak.org/en/latest/sandbox-permissions.html#filesystem-access) documentation:
> The --persist=path option can be used to map paths from the user’s home directory into the sandbox filesystem. This makes it possible to avoid configuring access to the entire home directory, and can be useful for applications that hardcode file paths in ~/.

Read the linked Flatpak Sandbox Permissions documentation, then inspect the repository's Flatpak configuration to find the paths currently exposed to the user's home directory. Done means the relevant configuration directories are persisted inside the sandbox while the application still works without broad home-directory access.

Written by the indexing model from the issue text.