implement-specslisted

# Implement Specs Use when the task is to implement existing spec files, issue plans, or acceptance criteria. ## Workflow 1. Locate and read the requested spec files. 2. Extract required behavior, constraints, non-goals, and verification gates. 3. Scout the existing code and tests before editing. 4. Produce a concise plan tied to spec requirements. 5. Implement the smallest viable change. 6. Run focused tests or checks. 7. Compare final behavior against the spec. ## Rules - Keep changes tied directly to spec requirements. - Ask or stop if specs conflict or are underspecified in a way that changes architecture. - Preserve public compatibility unless the spec explicitly changes it. - Add tests when behavior changes and a matching test layer exists. ## Output ```text SUMMARY IMPLEMENTED REQUIREMENTS CHANGES VERIFICATION SPEC GAPS OR FOLLOW-UPS ```