Establish scalable project structures with standardized naming conventions and folder organization patterns.

• Provides templates for React/Next.js frontends, Node.js/Express backends, and feature-based large-scale applications with clear separation of concerns
• Defines naming conventions for files (PascalCase components, camelCase utilities, UPPER_SNAKE_CASE constants), folders (kebab-case or camelCase), and variables (with is/has/can prefixes for booleans)
• Includes best practices for path aliases, barrel exports, colocation of related files, and enforcing maximum folder depth to prevent excessive nesting
• Covers constraints like avoiding circular dependencies, vague folder names, and deep nesting beyond five levels