You can always just connect your laptop (or some spare laptop) to the TV via HDMI. Not sure why you’d need to “hack together” something. A dedicated HTPC is nicer if you want to use IR remotes and the like.

Yeah, perhaps "hack together" is unnecessarily dismissive, but the experience to match is that of a single peripheral to control everything. The other area I have no interest expanding my knowledge into is the minefield of codecs, HDMI cables, GPU and drivers combos to have something outputting HDR and whatever Dolby's flavour of the month proprietary invention I inevitably come across.