What problem does it solve? When an OpenSpec change plan evolves, its artifacts (proposals, designs, specs, tasks) drift out of sync. This Skill revises existing planning artifacts and reconciles them against one another so the change stays internally consistent, without ever touching implementation code. ## Core Features & Use Cases - Coherence Review: Reads all existing artifacts of a change and detects contradictions, gaps, and duplication across them. - Targeted Revision: Applies a requested edit (e.g., a design decision change) and propagates its impact to every other affected artifact, in either direction of the build order. - Schema-Agnostic Operation: Uses artifact ids and paths reported by openspec status --json, so custom workflow schemas work without hardcoded assumptions. - Use Case: After deciding to switch a change's design from REST to GraphQL, ask the Skill to update the change; it revises the design artifact, reconciles the proposal and specs, and confirms each edit before writing. ## Quick Start Ask the assistant to update the OpenSpec change named "add-user-auth" so its artifacts reflect the new decision to use token-based sessions.