ML-Case Mock (Recorded)

# Submission: ML-Case Mock (Recorded) ## Brief Record a 20-minute ML-case mock on the churn/LTV packet: selection/CV/leakage, PR-AUC/SHAP/threshold defense, plus two follow-up grillings. ## Dataset Churn/LTV case packet (train/holdout + leakage trap column + cost matrix). ## Starter guardrails (plan 88) Mock template; recording checklist; written self-grade within 24 hours. ## 100-pt rubric Case solution 30; calibration + threshold defense 30; SHAP story 20; follow-ups 20. ## Deterministic checks -> LLM review Checks: recording present; threshold sweep table attached; self-grade filed. LLM review grades decision framing and trap handling.