I saw that there was a request for JXL support made a few years back , around the time that Chrome dropped support for JXL.
I would like to suggest a revisit of support for JXL in Photomechanic.
Adobe read/writes it from Lightroom and Photoshop, Apple is using it as a "raw" format ( wrapped in a DNG) , and seems to be available in more MAC ecosystem apps as well as open source ( no native windows support thought).