What problem does it solve? When an OpenSpec change plan evolves, its artifacts (proposal, design, specs, tasks) drift out of sync. This Skill revises existing planning artifacts so edits in one document are reconciled across all others, without touching implementation code. ## Core Features & Use Cases - Coherence Review: Reads all existing artifacts of a change and detects contradictions, gaps, and duplication in any direction, not just build order. - Confirmed Revisions: Proposes each edit, explains why, and writes only after user confirmation, one artifact at a time. - Schema-Agnostic Operation: Uses artifact ids and paths reported by openspec status --json, so custom schemas work without hardcoded assumptions. - Use Case: After deciding the design now uses a different storage layer, ask the Skill to update the change; it revises the design doc and reconciles the proposal, specs, and tasks that referenced the old approach. ## Quick Start Ask the assistant to update the OpenSpec change named my-feature so its artifacts reflect the new design decision and stay consistent with each other.