I assume ultimately something like signed releases will become a thing on the web, with the signing process being separate from the other processes so that a ha

I assume ultimately something like signed releases will become a thing on the web, with the signing process being separate from the other processes so that a hack has to compromise two entirely different systems, not just the build pipeline, to allow new JS to run. Currently the only thing that is signed is the SSL certificate which of course guarantees precisely nothing about the actual website content served from the server other than that someone didn't tamper with it after it was sent.