DIY Time Machine

I recently set up a pretty fresh installation of CachyOS on my PC to start experimenting with it. My core layout is quite fast: both the OS /root and my /home directories live on a snappy 1TB NVMe drive formatted to Btrfs, which handles my system snapshots. For bulk file storage (like my Steam library and large media), I have a separate internal 4TB HDD. While local snapshots on the NVMe are great…