writing-plans

Test-driven development plans enforce a red/green testing cycle for every component by mandating tests before writing code. This ensures adherence to TDD, YAGNI, and DRY principles while maintaining actionable task granularity throughout the development workflow.

The best way to plan a new feature module while enforcing DRY and YAGNI principles is to generate a structured, test-driven implementation plan before coding. This prevents vague tasks by ensuring clear file boundaries and strict architectural compliance.

Task decomposition is necessary for complex feature development when you need to prevent vague or poorly structured development tasks. It forces a rigorous breakdown into bite-sized steps, ensuring agentic workers can execute instructions without ambiguity.

TDD planning applies specifically to complex feature development requiring clear file-level decomposition. If an existing codebase lacks test-first workflows, this planning method still mandates a red/green testing cycle for every newly developed component to ensure strict compliance.