bindings-ab: port the ingest, UDF and callback arms to the release wheels and run the A/B #353

Problem

The long bindings A/B study still measures an old humemai cp312 wheel. The result applies to old code, so it cannot support a claim about the shipped arcadedb and arcadedb-jvm wheels.

I want one A/A pair per tier family and package in the plan, so every verdict carries its own noise floor, and the study runs last in the timed queue.

Priority: P4.

Acceptance

• Only the ingest (dataframe, Arrow, columns), UDF and callback arms are ported to the arcadedb and arcadedb-jvm 26.11.1 wheels (import name arcadedb), the materialize arm is dropped
• The A/A pairs are in the plan and the checksums are refreshed
• A dry run at small N passes and the estimate is refreshed
• The study runs and its verdict is recorded

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