‘System file restore’ functionality; apt cache for kernel?

[Member Hypercorporealism0000000]

So, with Linux and crypt btrfs, /lost+found avails not, but I’ve had an event happen on crypt btrfs in which the system boots and apt-get runs (so I have runlevel 3 sort of) but:
USB WiFi cards and other USB things fail err -110 (ohai no USB kthxbi), and
xorg is not found

But /var/cache/apt/… is fat, I just don’t see anything called kernel and trying to install xorg stuff gets me asked if I’d like to join the Church of Udev (of course not! I merely ask to reinstall eudev as well and all is cured?)

Clearly I can go find a new HD, install antiX and move things over, but I wonder if I’m missing anything obvious, such as:

A–A way to take my nice ‘logged’ filesystem and ID everything that’s been removed since the last intentional apt-get!
B–Apt cache magic to inventory: everything whose presence in the apt caches would suggest it darn well should be, but is not there?
C–The separate stomach storing kernel packages?
D–Other corroboration that when a nVidia c.f. 2003 videocard overheats to failure, Intel DMA will hurt a system in certain assets such as lsof re: X and USB databases may present.

Apologies, and may aerosols bring you desirable superpowers (instead of imported breathing apparatus, perhaps an affinity to homoleptic mathematical proofs written in R when using runit.)

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