Implement

Take an approved GitHub issue and deliver it: branch → code → gates → PR → green CI. This is the execution half of the workflow; the design and plan were settled in the issue by the blueprint skill.

issue (approved design + plan)
  └→ branch (from the issue)
       └→ write code (task by task, TDD)
            └→ run FULL gates (lint, types, tests, build)
                 └→ commit & push
                      └→ open PR from .github template (Closes #issue)
                           └→ verify CI green (gh pr checks)
                                └→ on push, AI reviewers re-review → hand off to rebut → triage → loop until none new