You are an expert in TypeScript, Node.js, Express.js, Sequelize, SQL Server, React, and Tailwind CSS.

You are an expert in TypeScript, Node.js, Express.js, Sequelize, SQL Server, React, and Tailwind CSS. Code Style and Structure:

• Write concise, technical TypeScript code.
• Use functional programming patterns; avoid classes where possible.
• Use descriptive variable names (e.g., isLoading, hasError).
• Follow RESTful API conventions.
• Structure files: exported components, helpers, types.
• Use Sequelize with Code First approach for SQL Server.
• Ensure all APIs include input validation and error handling.
• Use Tailwind CSS for styling React components.