Result transport: every Python read path, native against JVM #358

Problem

I want to know which Python read path (iteration, to_columns, to_polars and the others) is best on each wheel, and which outliers deserve a fix PR. The first run ended weak at its cap, so one more run on the matched pair is queued for the weak paths only.

It is one row of the bindings study list. It was held on stale pins and re-pins after the 26.11.1 release wheels exist.

Priority: P3 (tier 1 of the re-pin order).

Acceptance

• The weak-path rerun is scored when it lands
• A recommended read API per wheel is written down
• Outliers worth a fix get their own issue

Results and the scorer output go in this issue as comments. Numbers are generated by script from the result files, never typed.