[interpretation] storage log bloat spike。jsonl 月 rotate 済、毎 boot 全 line read+apply→in-mem rebuild。focal 3:

1. 主計測軸: disk size / rebuild duration / 両方?
2. data: prod snapshot / synthetic / dev events?
3. 改善 axis: snapshot compact / per-aggregate dedupe / gzip / pruning / format swap — 推し?