Spec Implement

Pick up tasks. Execute them. Track progress. 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 modify the plan. If the plan is wrong, go back to spec-plan. If the design is wrong, go back to spec-brainstorm.

Prerequisites

Before starting, verify these exist:

1. Approved spec — docs/specs/YYYY-MM-DD-<feature>/design.md
2. Approved plan — docs/specs/YYYY-MM-DD-<feature>/plan.json
3. Tasks created — In beads, harness todo list, or plan.json task list
4. Not on main/master — Never start implementation on main/master without explicit user consent. Create a branch or use a git worktree first.