implement

Imported from nicomellaor/zut-balance (.agents/skills/implement/SKILL.md). Install upstream with npx skills add nicomellaor/zut-balance --skill implement. Copyright stays with the author.

Implement

Use this skill to execute approved work from a feature task list.

1. Read repository instructions, specs/README.md, and the feature's spec.md, plan.md, and tasks.md. Confirm that the task list is approved; if approval is not evident, ask the user before changing code.
2. Unless the user specifies another scope, select the next unchecked task in dependency order. Read only its referenced requirement IDs and relevant plan entries before editing.
3. Implement only the selected task with small, coherent changes that follow the existing architecture and conventions. Preserve unrelated changes.
4. Run the tests, linters, builds, or other relevant checks defined by the task validation criterion or repository instructions.
5. Mark the task complete in tasks.md only after its validation criterion passes. Keep detailed evidence in test output and the final report, not in the task list.
6. Stop and ask the user before proceeding if requirements are ambiguous, implementation would materially deviate from the plan, validation reveals a scope change, or a failure cannot be resolved without changing scope.
7. Do not modify spec.md to justify an implementation. Do not start a later task unless requested or the user asks to continue.

Finish by reporting the completed task, files changed, and validation results.