you actually don't need capacitors for rotating media, Western Digital has a feature called "ArmorCache" that uses the rotational energy in the platters to power the drive long enough to sync the volatile cache to a non volatile storage.
I have a dell laptop that uses a usbc port to charge, but doesn't actually use the PD specification, but a custom one, so my 65w GAN charger falls back to 5v 0.5a and isn't useful at all. I'd bet dollars to donuts that your Lenovo is doing similar shit.
GOG has allowed third party backup software like https://github.com/Sude-/lgogdownloader to exist. I have a full offline mirror of my GOG library that I update monthly that will never happen with my Steam library.
Reading the cfx spec [1], the raw private key is exported as a base64 encoded der. I don't understand what your concern is here. It appears that any cfx export file is not tied to a specific service to service import path, but can be imported into anything, or just used locally with self written tools.
This is merely the exchange format between credential providers, which is encrypted and gatekeeped by the credential providers. None of this is exported to users.
If the TCP Window size is abnormally small I block those and MSS outside of 1280-1460 but that is prior to anything the browser is doing. Those can been seen with
tcpdump -p -i any -c512 -NNnnvv port 443 and 'tcp[13] == 2'
Or if a VPN is being used there is always a chance it is coming from a server/VPS provider and may be blackhole routed on my end.
Arq [1] has an option to "materialize" dataless files, basically forcing them to be locally available. The only issue is if it's a large file and it gets pushed off device often, you can burn a lot of bandwidth re-downloading it over and over again.
I use Nextcloud for files/contacts/calendar/etc. as well, but for photos I use PhotopPrism [1].
The reason is simple: photos require much more processing and focus on performance. In addition, photos take up much more space, so while my Nextcloud instance runs on an SSD, the photos reside on an HDD, mostly in sleep mode.
https://documents.westerndigital.com/content/dam/doc-library...