What problem does it solve? Finalizing a completed change in an OpenSpec workflow involves checking artifact status, task completion, and spec synchronization before moving files to an archive, which is error-prone when done manually. ## Core Features & Use Cases - Completion Verification: Checks artifact status via openspec status --json and counts incomplete tasks in tasks.md before archiving. - Delta Spec Sync Assessment: Compares delta specs against main specs and optionally triggers the openspec-sync-specs workflow before archiving. - Safe Archiving: Moves the change directory into a date-prefixed archive folder (YYYY-MM-DD-name) with collision detection. - Use Case: After finishing implementation of a feature change, ask the assistant to archive it; the skill prompts you to select the change, warns about incomplete tasks, syncs specs if needed, and moves the change into the archive. ## Quick Start Ask the assistant to archive the completed change named add-user-auth using the openspec archive workflow.