int_ofsted_latest treated any report card as the latest visit, relying on report cards postdating legacy inspections. That holds today (0 of 2,451 report-card schools in the 31 Aug 2026 MI) but is now not assumed: the latest visit is the newest of the three dates. A report card still leaves no legacy grade in force, which is the spec's rule rather than an inference. New unit test newer_legacy_visit_after_a_report_card failed RED on the old logic. Review on #183.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
