What problem does it solve? Finalizing a completed change in an OpenSpec workflow involves several manual checks: confirming artifacts are done, verifying tasks are complete, syncing delta specs into main specs, and moving the change directory into an archive. This Skill automates that entire finalization sequence through the openspec CLI. ## Core Features & Use Cases - Change Selection & Validation: Resolves the target change from user input or conversation context, and checks artifact and task completion status via openspec status --json. - Delta Spec Synchronization: Compares delta specs against main specs, optionally runs an inline sync workflow, and verifies the merge before archiving. - Safe Archiving: Moves the change directory into a date-prefixed archive folder with collision detection and a clear completion summary. - Use Case: After finishing implementation of a feature change, ask the assistant to archive it; the Skill checks for incomplete tasks, syncs spec updates, and moves the change into the archive with a full report. ## Quick Start Archive the completed change 'add-user-auth' and sync its delta specs into the main specs.