Thanks, I understand you as saying here that KM should not need to be tweaked if everything has been implemented in Orion. I think that is a little different from the previous answers, but maybe I misunderstand.
From May 2022 (above):
As linked to in my update, above, from May 2023 above, here is my post showing that Applescript control is possible: Orion Web Browser: Getting URL or Title via Applescript
KM's %FrontBrowser...%
tokens do not see Orion, nor do the Press a button...
actions. I have not been able to spot any relevant differences between Orion and Safari's dictionaries,
Safari Technology Preview continues to also be invisible to KM's tokens, so I am not sure to what extent Webkit browsers have to be individually catered for by KM.