Jupyter notebook best practices template

Create a production-quality Jupyter notebook template. Structure: 1. Markdown header with title, author, date, and objective. 2. Table of contents with anchor links. 3. Environment setup cell (imports, configs, random seed). 4. Exploratory Data Analysis section with visualizations. 5. Modeling section with clear train/test split. 6. Results summary with key metrics and business recommendations. Use consistent styling, hide warnings, and include inline documentation.