React web development with hooks, React Query, Zustand

Klaviyo email/SMS marketing - profiles, events, flows, segmentation

WooCommerce REST API - products, orders, customers, webhooks

Create interactive charts for car registration and COE data visualization using Recharts. Use when adding new chart types, fixing chart bugs, or implementing data visualizations.

Schema awareness - read before coding, type generation, prevent column errors

Node.js backend patterns with Express/Fastify, repositories

Medusa headless commerce - modules, workflows, API routes, admin UI

Azure Cosmos DB partition keys, consistency levels, change feed, SDK patterns

Next.js with Supabase and Drizzle ORM

PostHog analytics, event tracking, feature flags, dashboards

Create or update database seed scripts for development and testing environments. Use when setting up test data, initializing development databases, creating demo environments, resetting to known...

Security auditing for code vulnerabilities (OWASP Top 10, XSS, SQL injection) and dependency scanning (pnpm audit, Snyk). Use when handling user input, adding authentication, before deployments,...

Add or customize shadcn/ui components in the shared UI package. Use when adding new components from shadcn registry, updating existing component variants, customizing styling with Tailwind, or...

OAuth 2.1 + JWT authentication security best practices. Use when implementing auth, API authorization, token management. Follows RFC 9700 (2025).

Express/Hono with Supabase and Drizzle ORM

React Testing Library 및 Vitest 기반 테스팅 모범 관례. 다음 상황에서 사용: (1) .test.tsx, .test.ts, .spec.tsx, .spec.ts 파일 작업 시, (2) 컴포넌트 테스트 작성 또는 리팩토링 시, (3) 'test', 'testing', 'vitest', 'RTL', 'getByRole',...

E2E testing with Playwright - Page Objects, cross-browser, CI/CD

Firebase Firestore, Auth, Storage, real-time listeners, security rules

Build AI agents with Pydantic AI (Python) and Claude SDK (Node.js)

HarmonyOS application development expert. Use when building HarmonyOS apps with ArkTS, ArkUI, Stage model, and distributed capabilities. Covers HarmonyOS NEXT (API 12+) best practices.