Add ci-relay (VPS webhook receiver) and local-runner (Thinkpad CI
executor) crates that communicate over iroh. Includes .ci.yml smoke
test pipeline, simulation tests, and development docs.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
Iroh gives us a lot as a transport layer. Lets make use of it.
Co-authored-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
Co-committed-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
