What problem does it solve? Keeping main capability specifications in sync with change proposals is tedious and error-prone when done by hand. This Skill applies delta specs (ADDED, MODIFIED, REMOVED, RENAMED requirements) from an OpenSpec change directly into the main specs with intelligent merging, without archiving the change. ## Core Features & Use Cases - Intelligent Requirement Merging: Applies ADDED, MODIFIED, REMOVED, and RENAMED requirement blocks from delta specs while preserving untouched scenarios and content in main specs. - Store-Aware Operation: Discovers registered OpenSpec stores via openspec store list --json and scopes all reads and writes with --store <id> when a store is selected. - Safe Capability Retirement: Deletes a retired capability's spec.md only when strict conditions hold, including the retire_capabilities: true marker, and reports blocking conditions otherwise. - Use Case: After finishing a change that adds scenarios to the user-auth spec, run the sync to update specs/user-auth/spec.md in place, validate with openspec validate --specs, and keep the change active until implementation is complete. ## Quick Start Sync the delta specs from my current OpenSpec change into the main specs without archiving the change.