I know you wanted FOSS, but I highly recommend you check out Eagle,

http://www.eagle.cool
(no affiliate link, I just love and recommend it)
Does everything, deduplication, tagging, smart folders, audio, fonts, video, gifs, text files, filters, mass download images with browser plugin, screenshots, clipboard,

Super fast, on SSD loads 80k images in a few seconds after the initial import (which takes a bit of time).

30 day free trial, $30 lifetime license after. Worth every dollar.

A few other redditors wanted FOSS, they reluctantly tried Eagle for free, then bought a license before the trial period was even over.

In 4.0 they will add 3D File format support: (https://eagle.cool/blog/post/4.0-beta)
“For those engaged in 3D modeling and design, we’ve included support for 3D file formats such as 3ds, 3mf, dae, ifc, ply, stl, and glb. This expansion enables you to work with a more diverse range of 3D content seamlessly.”

They have a roadmap up: https://trello.com/b/LSsVep1d/eagle-development-roadmap

Try it out, even if it’s not FOSS, if you don’t like it, you can come back after the free trial and tell me I told you so…