Add frontier_crossover_rows() to scripts/summarize-benchmark-results.py so each frontier pairs the largest configured fallback cap with the smallest exact cap. Report end-to-end p50, indexed-work p50, profiling-only RSS p50, fresh-full p50, the exact/fallback latency ratio, and a documented five-percent tie band.
Extend tests/test_summarize_benchmark_results.py with a three-cap fixture that proves the nearest fallback/exact pair is selected and rendered. Verified 22 benchmark summarizer/campaign tests and Ruff; regenerated the preserved 318-cell campaign with 318 complete and zero missing, corrupt, duplicate, or unplanned cells.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
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