I just backup the folder with the pics to my NAS on a schedule with the rest of my backups.

I spun up immich on my computer and it does basically everything you’re asking for. Its duplication detection is pretty good, but definitely tweak the parameters so you don’t get too many false positive matches.

And some basic image editing! At last

Immersion blend two egg yolks with a tsp of water and lemon juice, then stream in your melty hot butter from the sauce pan while you keep immersion blending and you got a banger hollandaise.