* test(#1955): failing-first contract for verifier coincidental-reliance advisory
* test(#1955): anchor coincidental-reliance assertions on the frontmatter block
* feat(#1955): flag coincidental reliance in goal-backward verification
* chore(#1955): correct stale workflow tier high-water comment
* fix(#1955): close the verify-phase divergence and state the endogeneity limit
* docs(#1955): backfill changeset pr number
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Co-authored-by: sim <sim@local>