Six per-component property-test subsections (§4.10 engine, §5.8 network,
§6.4 hosting, §8.4 scenario loader, §9.6 bundle writer, §10.5 assertion
evaluator) written in property-language form. Each names the property the
component must have; how the property is verified is the test author's
call.
These were drafted in conversation but never committed, causing the
boundary check to flag SIM_SPEC.md on iteration 1 of the implementation
loop. Committing now puts them at HEAD so future loop iterations diff
cleanly.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
