xfy 5e38b63f10 docs(benchmarks): update performance report and add bench-compare script
- Update benchmarks/v0.4.0/REPORT.md with optimization results:
  Task A access-log sampling (-29% latency, -65% allocs),
  Task B file-cache fix (-99.8% allocs, +73% throughput),
  Task C RemoteAddr string caching.
- Add scripts/bench-compare.sh to compare two benchmark summaries
  and flag regressions beyond configurable thresholds.
- Add benchmark-pprof.yaml for reproducible pprof collection.
2026-06-11 14:43:19 +08:00
..