Landstrip

I played with an idea could Landlock LSM be used to do conceptually a
better fit sandbox for programs such as Anthropic Sandbox Runtime [1].

After some missteps at first I got it pulled together quite well:

https://crates.io/crates/landstrip

To see it in action I also have a fork of pi-hashline-readmap plugin,
which was a cherry-picked test case I wanted to try out given it already
hooks the bash tool command for compressed output.

I just thought that this might interest some as Landlock is not really
over-used kernel feature in "application sense".

This is a more lower barrier and more failure tolerant to deploy than
Bubblewrap based container for this use and purpose in my opinion
at least.

[1] https://github.com/anthropic-experimental/sandbox-runtime/issues/291
[2] https://github.com/jarkkojs/pi-hashline-readmap

BR, Jarkko