Duplication Prevention Skill

Code duplication prevention enforces a search-before-create workflow that checks existing files using glob and grep patterns before creating new ones. The Skill systematically searches your codebase, analyzes naming patterns and functionality, then either extends an existing file or creates a new one following established conventions, keeping your project lean and maintainable.

Search before creating whenever adding components, hooks, utilities, pages, or data files. This prevents redundant implementations of similar functionality. The Skill applies automatically during feature requests and manual activation prompts, ensuring you extend existing patterns rather than duplicate logic across your codebase.

The workflow uses a 3-step process: Search applies glob and grep checks across components, hooks, pages, utilities, and data artifacts; Analyze compares naming variations and functional overlaps using a centralized file registry; Create or Extend decides whether to add to existing files or follow correct structure for new ones, blocking common anti-patterns like case and naming variations.

Yes. The Skill enforces search-before-create during auto-activation, manual activation prompts, and feature requests that don't specify a location. It applies before the Scout phase in the TAC workflow, ensuring agents check for existing code before generating new files or implementations.

The Skill covers components, hooks, pages, utilities, data files, and other code artifacts. It maintains clear naming guidelines and file registry patterns for each category, ensuring consistency across your project structure and preventing redundant files in any of these standard locations.

By blocking redundant file creation and enforcing consistent patterns, the Skill reduces code duplication, improves maintainability, and keeps your codebase clean. Centralized logic reduces debugging surface area, simplifies refactoring, and ensures development standards are applied consistently across the project.