Lists multiple specific concrete actions: creates/updates structured plans, breaks change requests into scoped atomic tasks, specifies clear goals, boundaries, acceptance criteria, and verification steps. Also specifies the output path format `context/plans/{plan_name}.md`.

Clearly answers both 'what' (creates structured implementation plans with atomic tasks, goals, boundaries, acceptance criteria, verification steps) and 'when' with an explicit 'Use when...' clause covering multiple trigger scenarios (planning features, refactors, integrations, needing task breakdowns or roadmaps).

Includes a strong set of natural keywords users would say: 'plan a new feature', 'refactor', 'integration', 'project plan', 'task breakdown', 'implementation roadmap', 'work plan', 'structured planning', 'change request', 'success criteria'. These cover many natural variations of how users would request planning help.

Highly distinctive with the specific SCE framework reference, the output path `context/plans/{plan_name}.md`, and the focus on structured implementation planning with acceptance criteria. This is clearly distinguishable from general coding skills, documentation skills, or project management skills.

The skill is mostly efficient and avoids explaining concepts Claude already knows. However, some sections are slightly verbose—the clarification gate's bullet list of critical details is thorough but could be tightened, and the example clarification questions, while useful, add length. The example task entries are valuable but the skeleton + filled-in example is somewhat redundant.

The skill provides highly concrete, actionable guidance: specific plan format, required task fields, a filled-in example task with real commands (`pnpm test`, `curl`), checkbox syntax for progress tracking, exact output path (`context/plans/{plan_name}.md`), and a canonical next command (`/next-task {plan_name} T01`). Very little is left ambiguous.

The workflow is clearly sequenced: intake trigger → clarification gate (blocking) → plan writing → output contract. The clarification gate is an explicit validation checkpoint that blocks progress until ambiguities are resolved. The atomic task slicing contract provides clear rules for splitting work. The required final validation task and output contract close the loop well.

The skill references `context/plans/PLAN_EXAMPLE.md` for a full annotated reference plan, which is good progressive disclosure. However, no bundle files were provided, so this reference is unverifiable. The main content is reasonably well-structured with clear sections, but the inline examples (skeleton + filled-in task) could potentially be offloaded to the referenced example file to keep the SKILL.md leaner.