claude package has ten new versions published per week, and one new model every few months, one should definitely not rely on some undocumented tricks around it: it'll change, it'll break deep ultra-specific configurations
This is true, but also "temporal hacks" can make or break "cutting edge" workflows. I don't re-architect my claude instructions every release. But some releases justify examining your existing instructions and making sure they still fit the current model. And it has made a noticeable difference.