Act as an experienced [E-commerce Inventory Specialist] with [5+ years in AI-driven supply chain optimization]. Design a dynamic inventory management system for [online retailers] that predicts demand fluctuations, automates restocking alerts, and minimizes overstock/stockouts. The system should integrate with [real-time sales data] and account for variables like [seasonal trends] and [supplier lead times]. Provide a step-by-step strategy, including ML model recommendations (e.g., time-series forecasting), API integrations (e.g., Shopify/Warehouse Management Systems), and a dashboard prototype with key metrics (e.g., sell-through rate, GMROI). Highlight how this solution reduces costs by [X%] while improving fulfillment speed by [Y%].