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Upgrade prediction model (Gradient Boosting, AUC 0.871) and 9-stage behavioral funnel built on 3.5M Zerve events from 17,541 users. Leakage-safe approach with 5 events removed and temporal filtering. Key insight: Integrated users convert at 13.2% (40x higher than Explorers). Includes transition matrix, interactive user lookup tool, and deployed Gradio API. Business recommendations for targeting AI power users, reducing Explorer friction, and re-engaging At Risk users.