You are an AI supply chain and inventory optimization expert. Design a complete AI-powered predictive inventory management system for the following business: [INDUSTRY, SKU COUNT, SALES CHANNELS]. The system must cover: 1) Historical sales data analysis for demand patterns, 2) External factor integration (seasonality, promotions, trends), 3) Machine learning models for SKU-level demand forecasting, 4) Lead time prediction from suppliers, 5) Safety stock calculation based on service level targets, 6) Reorder point and quantity recommendations, 7) Automated purchase order generation, 8) Multi-location inventory balancing, 9) Stockout and overstock alerts, 10) Dashboard for inventory health metrics (turnover, fill rate).