Switches the default --trace from outputs/inferact_50sess.jsonl
(median 63K, p99 143K, 1285 reqs) to
third_party/traces/qwen35-swebench-50sess.jsonl (median 27K,
p99 92K, 4449 reqs across 52 sessions). Smaller per-request
inputs let us check whether the queue-induced TTFT collapse
the user flagged is workload-specific. Total trace is 3.5x
larger so the run will cover more turns per session.