What problem does it solve? Finalizing a completed change in an OpenSpec-driven workflow involves several manual checks—verifying artifact completion, confirming tasks are done, syncing delta specs, and moving directories—which is error-prone when done by hand. ## Core Features & Use Cases - Guided change selection: Lists active changes via openspec list --json and prompts the user to pick one instead of guessing. - Completion verification: Checks artifact status with openspec status --json and counts incomplete tasks in tasks.md, warning before proceeding. - Delta spec sync assessment: Compares delta specs against main specs and optionally triggers a sync before archiving. - Dated archiving: Moves the change directory into an archive/ folder named YYYY-MM-DD-<change-name> with collision detection. - Use Case: After finishing implementation of a feature change, ask the assistant to archive it; the skill verifies everything is complete, syncs specs if needed, and files the change away with a dated archive entry. ## Quick Start Archive the completed change "add-user-auth" and sync its delta specs before moving it to the archive.