=== Scale 5000 (chunk=500) ===
Backend: clickhouse, Scale: 5000 worlds, Environment: local-docker
Streaming mode: totalWorlds=5000, chunkSize=500
PBP sink: local at ./pbp-parquet-5k

Streaming Run Report
--------------------
Total wall time:         1417.32 s
Simulation time:          605.02 s
OC write time:            252.33 s
PBP write time:           413.42 s
Merge time:                74.61 s
Peak working set:        18625.3 MB
Chunks completed:             10
OC rows (merged):        244,800
PBP rows (written):   209,880,838
