I hadn’t realized someone had already made a thread on the topic, it seems I was misunderstanding what the search bar was showing me.
When I manage to spare a couple of hours, I will try to figure out how to do a GSI and go through all of those steps. If it does work, I will mark your post as the solution.
…seems that unfortunately needed (re)sources - kernel & vendor - aren’t available yet:
If your ‘pnangn’ runs with Operating System Stock Android™ 14 , you can try it out GSI-U (A14) from different developers: Generic System Image (GSI) list
The phone is on Android 14, would you have any recommendations as for which one I should try first?
Now that I see the importance of acquiring a stock ROM, I have realized the link I originally posted is for Android 13. Would anyone know where I could acquire a ROM with Android 14 without a paywall? Or would getting the ROM with Android 13 be just fine as a backup?