What problem does it solve? Finalizing a completed change in the OpenSpec experimental workflow requires checking artifact status, task completion, and delta spec sync state before moving files into an archive directory. Doing this manually is error-prone and can leave specs out of sync. ## Core Features & Use Cases - Completion Verification: Runs openspec status --json to check artifact completion and scans tasks.md for incomplete checklist items 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 and user confirmation prompts. - Use Case: After finishing implementation of a feature change, ask the assistant to archive it; the skill verifies all artifacts and tasks are done, offers to sync specs, then moves the change into the archive with a summary report. ## Quick Start Archive the completed change named add-user-auth and confirm any warnings about incomplete artifacts or tasks.