Returns true if the given tier is enabled in the current process environment. Deterministic is always enabled; mutation/live-model require their env gate === '1'. Single source of truth honored by both the tsx scripts and IntegrationTestDriver.
Returns true if the given tier is enabled in the current process environment. Deterministic is always enabled; mutation/live-model require their env gate === '1'. Single source of truth honored by both the tsx scripts and IntegrationTestDriver.