Matched control on the MICCAI release

This tag is the frozen state of record for the matched control: the MICCAI 2026 release
(v1.0-miccai2026) plus one commit that adds the request-only baseline, the noise band and the
justification re-read on the same four Gemini cohorts. Nothing else changed.

What the commit adds

• experiments/matched_baseline/matched_baseline_reason.py: asks each case again with the same
  one-sentence request and no scoring note, same model, temperature 0, replaying the committed baseline
  and note responses from their caches, so the note's effect is read net of the request. --repeats
  re-asks the control five more times for a noise band.
• experiments/matched_baseline/justification_reread.py: two model readers score every justification
  for a mention of the note, against the keyword screen.
• Per-case rows and summaries next to each cohort's committed results as matched_baseline_reason*;
  the credentialed cohort ships as de-identified outcome flags keyed by case_index.
• tests/test_matched_baseline_reason.py: every summary regenerates from its rows with no API key.

Cite this tag, not main

main continues past this point with follow-up work that is not part of this control. If you are
checking a number from the matched control, check out v1.1-perspective-control.

No dataset is redistributed here

Each cohort's data carries its own terms and must be obtained from its provider. This repository
contains no report text, images, caches, or subject and study identifiers.