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prod-rigor-review
// Product-specific rigor audit. Runs 7 product checks (TAM triangulation, cohort math, competitive MECE, pricing elasticity, metric tree soundness, eval coverage per Husain, customer-evidence tier) ON TOP of the universal rigor-review (MECE, sniff-test, storyline, hypothesis coverage, assumptions, comprehensive). Use as self-check before shipping any product artifact OR when asked to audit someone else's product work. Called by all product agents and by product-critic.