agentic-sdd-implementlisted

# Agentic SDD Implement Use this skill when implementing one approved task from `specs/<feature>/tasks.md`. ## Goal Implement exactly one bounded task or a small approved group of independent tasks. Keep the change scoped and verifiable. ## Required Reading - `.specify/memory/constitution.md` - `specs/<feature>/spec.md` - `specs/<feature>/plan.md` - `specs/<feature>/tasks.md` - `specs/<feature>/test-plan.md`, if present - `specs/<feature>/review.md`, if present - relevant ADRs - relevant existing code and tests ## Before Editing Confirm: - the task is marked approved or safe to start - allowed and forbidden files are clear - verification command is defined - high-risk areas are not involved, or approval is explicit ## High-Risk Approval Gate Ask before touching: - package manager files or dependencies - database schema or migrations - auth, authorization, sessions, permissions - payments or billing - secrets, credentials, environment files - production config, infrastructure, deployment - destructive deletes or broad rewrites ## Implementation Rules - Stay within allowed files unless you ask first. - Follow existing project patterns. - Prefer simple direct code over new abstractions. - Do not weaken tests to make code pass. - Update contracts, docs, and specs only when the task requires it. - Record any deviation from the plan. - Do not use subagents unless the user explicitly asked for delegated or parallel agent work. - If subagents are used, assign disjoint fi