Spec Implement

Execute the approved Spec-backed Plan. Track progress when it uses tracked tasks. Report. Stop when blocked.

Announce at start: "I'm using the spec-implement skill to execute this plan."

This skill does not make design decisions or change approved content. It may persist approved content from the conversation when Plan Mode could not write the required artifact. If the plan is wrong, go back to spec-plan. If the design is wrong, go back to spec-brainstorm.