TRIGGERS: "review my API", "check my endpoint", "is this RESTful?", "backend review",
"building API", "creating endpoint", "adding route", "implementing service", "making controller",
"adding middleware", "handling request", "server-side", "Express route", "API design",
API, REST, Express, Node.js, routes, middleware, controllers, services, server logic.
USE WHEN: Junior is BUILDING APIs, structuring backend code, designing endpoints, or handling requests.
PROVIDES: REST conventions, middleware patterns, route organization, separation of concerns.
PROACTIVE: Triggers when junior mentions building backend features, not just reviewing.