- awaitHerdr now returns a HerdrAwaitOutcome(HerdrWaitResult, elapsedNanos) instead of a bare
boolean, so 'the wait budget genuinely ran out' and 'the waiting thread was interrupted' are
two distinct, named states instead of the same false (fleetd #497's shape).
- awaitHerdr takes the clock (LongSupplier) and the per-poll sleep (Runnable) as required
parameters, with no defaulted overload (fleetd #415), so a test can drive it.
- The startup call site is extracted into logHerdrWaitOutcomeAndShouldReap, since main() itself
cannot be driven from a unit test; it logs a distinct message per outcome, always printing the
measured elapsed time next to the configured budget, never the budget alone.
- Adds FleetdAwaitHerdrTest covering the seam (all three outcomes, plus the preserved interrupt
flag) and the call site (the three distinct log messages), using ListAppender.
Dai Ha