When to Use Use this skill when: - Adding or changing HTTP routes - Updating handler request/response schemas - Modifying status code behavior --- Contract Rules 1. Every new/changed endpoint must have tests. 2. Cover both success and error paths. 3. Keep scripts and docs aligned with real handlers. 4. Do not reference non-existent endpoints in plugins/hooks. --- Required Validation - Handler-level tests for parsing/validation errors - E2E tests for route behavior and response body - Regression test for every bugfix related to API contracts --- Docs Rules If payload or route changes, update d…