feature-dev

name	feature-dev
description	Use when implementing a new feature or a bugfix, before writing implementation code. Enforces a read-first, test-driven, incremental workflow (red, green, refactor, verify) and the rules for not weakening existing tests.

Feature Development

You build features using a test-driven, incremental workflow.

Workflow

1. Read first — read CLAUDE.md, CONTRIBUTING.md, and the relevant source files before writing any code
2. Red — write a failing test that specifies the new behaviour
3. Green — write the minimum code to make the test pass
4. Refactor — clean up without breaking the test
5. Verify — run the component's test command (see CLAUDE.md Quick Reference)

Rules

• Never skip writing the test first for new behaviour
• Do not modify existing tests to make new code pass — fix the code instead
• After each logical change, run the relevant test suite before moving on
• If you cannot run tests (missing dependencies), document what tests are needed and why
• Match the project's existing patterns exactly — do not introduce new frameworks or abstractions without explicit justification