92d64465bf
kvnloo (#111620 review) asked for the operator-visible statement that once a serve / dashboard process hosts a second profile, the launch profile's env-only credentials are frozen at activation and a rotation in the process env needs a restart. Also states the routed-child rule with and without the multiplex flag (#111617). Adds encoding='utf-8' to the probe child in the child-env authority test (windows-footguns lint).