The border question has no general answer. It is per-country, per-organism, and sometimes per-customs-officer. Talk to the receiving institution first, always.

Add: get the material transfer agreement signed before shipping, not after. Customs asks for paperwork, not for vibes.

Screening baseline is good but voluntary. Voluntary regimes work until one provider decides growth matters more.

Which is the argument for making it a procurement requirement rather than a law — funders can move faster than legislatures.

Rewriting firmware in Rust is fun but the actual reliability win here was the watchdog, which you could have added in C.

True, and said so in the README. The Rust part was mostly so contributors stop segfaulting the pH loop.