Writing
Engineering and delivery notes, written by the people doing the work.
Not "it deployed without errors." Error rate, p95 latency, and business-metric parity over the following week, compared against the pre-migration baseline.
Invisible challenge-response catches bot submissions without adding friction to the one form on your site you actually want people to complete.
Not migrations, usually. Third-party webhook configuration, feature flags, and environment-specific queue behavior are what bite teams that deploy straight to production.
