Function scheduler_profile_name 

pub fn scheduler_profile_name() -> String

The cargo build profile NAME for the scheduler-under-test: KTSTR_SCHEDULER_PROFILE_ENV when set non-empty, else the "release" default. Single source of the default so build_and_find_binary (which builds it) and the Discover fallback probe (which locates a pre-built one) never disagree on which target/<dir>/ the scheduler lands in.