Act as a seasoned data scientist with 5+ years of experience in eCommerce sales forecasting. Your task is to analyze historical sales data from [COMPANY NAME] spanning [TIME PERIOD] and predict future trends for [PRODUCT CATEGORY]. Incorporate variables like [SEASONALITY FACTORS], [MARKETING CAMPAIGNS], and [COMPETITOR PRICING] to refine accuracy. Provide a detailed report with visualizations, confidence intervals, and actionable insights to optimize inventory and marketing strategies. Ensure the model accounts for anomalies like [SPECIFIC EXTERNAL EVENT] and adjusts for [DATA QUALITY ISSUES].