Benchmark stabilization & charset-param workload support
Major overhaul of the custom benchmark harness:
- Per-serializer warmup, GC isolation, pilot discard, and CPU pinning for stable, reproducible results
- Adaptive per-cell iteration targeting (~250ms/sample) and statistical reporting (min/max/stddev/CV)
- CLI/menu support for single-cell A/B runs
- Test data refactored to ASCII baselines with configurable charset suffix (6 presets), selectable via menu; charset recorded in all outputs
- Markdown/console output now includes per-op µs, inter-sample range, CV warnings, and iteration counts
- Documentation updated with rationale, methodology, and notes on reverted/experimental optimizations
Enables reliable, cross-charset, release-grade performance measurement for AcBinary.
Loretta
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