Released in v0.10.24.
Hylope has a Photoshop plugin, in beta for Photoshop 25.0 and later on Windows and macOS. Docked as a panel, it shows your projects, your current selection, and your Key Assets, so you can pick the version you want, open it or place it as a smart object, then save a PNG copy back as that asset’s next version. A Photoshop document can also be sent to Hylope as a reference.
You sign in from the browser with the account you already use. The download and the setup steps are on the Photoshop plugin page.