feat(db-bench): campaign driver + gate + recipes (T4)
- scripts/db-bench.py (one python driver — bash+python deviation,
disclosed): ram+durable x 1/N shards, msgrate per shard count,
restart proof, kill -9 battery vs acked high-water, RSS/fd
sampling from the mix phase, results JSON, relative+floor gates
- just db-bench / db-bench-quick (quick = floors only)
- quick campaign 14 checks green; gate honestly fails without a
baseline (--write-baseline is Task 5's first full run)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
shoney.arickathil
d1cdf3ed6c