Constant KTSTR_BUDGET_SECS_ENV 

pub const KTSTR_BUDGET_SECS_ENV: &str = "KTSTR_BUDGET_SECS";

Name of the environment variable that overrides the per-test budget in seconds for VM-boot dispatch. Empty / unset falls back to the dispatcher’s default. Parsed as f64 seconds at crate::test_support::dispatch (accepts fractional values like 2.5); invalid or non-positive values surface a warn and the default applies.