@utopiarte T/y. I use a desktop browser [#Floorp, an excellent #Firefox#ESR fork] & in the absence of a more elegant option, have been copying target posts to clipboard, then pasting into my Floorp #WebPanel of about:translations. This though is clunky & "high friction" such that i often lazily instead opt to skip right over non-English posts in my timeline.
Given there's apparently nothing server-side to help here, prolly i shall reinstall the FF #AddOnaddons.mozilla.org/en-GB/firef… which i uninstalled comparatively long ago once FF's native local translation tool came along. The AO has one advantage over the native tool though, it includes a context-menu option to translate selected text. I didn't need that any more back in Masto, but it seems now here in #Friendica, i need it again.