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 into main specs, and moving the change directory into a dated archive. This Skill automates that entire finalization sequence so nothing is archived prematurely or left out of sync. ## 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 archiving unfinished work. - Delta spec sync assessment: Compares delta specs against main specs, summarizes pending changes, and optionally triggers the openspec-sync-specs workflow before archiving. - Use Case: After finishing implementation of a feature change, ask the assistant to archive it; the Skill verifies all artifacts and tasks, syncs specs if needed, and moves the change to openspec/changes/archive/YYYY-MM-DD-<name>/. ## Quick Start Archive the completed OpenSpec change for the feature we just finished implementing.