What problem does it solve? Finalizing a completed change in an OpenSpec 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, never 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 offers to sync before archiving. - Safe Archiving: Moves the change to openspec/changes/archive/YYYY-MM-DD-<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, optionally syncs specs, and archives the change with a dated folder name. ## Quick Start Archive the completed change "add-user-auth" after verifying its artifacts and tasks are done.