How does it track progress?

It uses a TodoWrite task system to manage implementation batches and appends status updates to a central progress journal (docs/progress.md).

Does this skill handle automated testing?

Yes, it follows a strict TDD cycle, writing the test first, verifying the failure, then implementing the code until the test passes.

How does it handle bugs during implementation?

If a test fails unexpectedly or a type error occurs, the skill automatically spawns specialized debugger agents to diagnose and fix the issue.

What is the primary purpose of the Implement skill?

The Implement skill automates the execution of software development tasks from a plan, ensuring every step follows TDD best practices and quality standards.

Does it support UI and design systems?

It includes a dedicated UI phase that can fetch Figma context, apply aesthetic directions, and run visual reviews to prevent 'generic' AI-generated designs.

Implementation Engine

Name: Implementation Engine
Author: howells

byhowells

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Productivity & Workflow

Executes structured development plans through a task-by-task TDD workflow with automated quality checks.

The Implement skill is the execution core of the Arc framework, designed to transform abstract implementation plans into production-ready code. It automates the heavy lifting of the development lifecycle by managing Git worktrees, enforcing strict Test-Driven Development (TDD) cycles, and performing continuous quality enforcement via TypeScript and Biome. By processing tasks in batches and utilizing specialized sub-agents for debugging, data integrity, and UI reviews, it ensures that every feature is robust, well-formatted, and perfectly aligned with the project's architectural and aesthetic standards.