End-to-end form handling with react-hook-form, Zod schemas, validation patterns, error messaging, field arrays, and multi-step wizards. Use for complex forms, validation architecture, autosave,...

Expert guidance for Swift development including SwiftUI, iOS/macOS frameworks, Server-side Swift, and Objective-C to Swift 6 migration. Use when developing Swift applications, working with Apple...

Expert guide for testing Next.js applications with Playwright, Jest, and React Testing Library. Use when writing tests, debugging test failures, or setting up test infrastructure.

Implement reverse proxy to forward requests to backend services. Use for load balancing, API gateways, and microservices routing.

Implement automated secrets rotation for API keys, credentials, certificates, and encryption keys. Use when managing secrets lifecycle, compliance requirements, or security hardening.

Implement synthetic monitoring and automated testing to simulate user behavior and detect issues before users. Use when creating end-to-end test scenarios, monitoring API flows, or validating user...

Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging...

Next.js with Supabase and Drizzle ORM

Integrate external APIs and services with error handling, retry logic, and data transformation. Use when connecting to payment processors, messaging services, analytics platforms, or other...

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Next.js 16 specific patterns including proxy.ts (replaces middleware), cache components, and App Router conventions. This skill should be used when setting up a new Next.js 16 project or migrating...

Cloudflare Workers, Pages, KV, D1, R2, and Durable Objects development best practices for edge computing applications.

E2Eテスト専門。Playwright/Cypress設定、Page Object設計、認証フロー、並列実行、視覚回帰、CI統合。ユーザージャーニー全体を検証。RadarのE2E専門版。E2Eテスト作成が必要な時に使用。

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

在编写新功能、修复 bug 或重构代码时使用此 skill。强制执行测试驱动开发，覆盖率要求 80% 以上，包括单元测试、集成测试和 E2E 测试。

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Feature flag patterns for controlled rollouts, A/B testing, kill switches, and runtime configuration. Use when implementing feature toggles, feature flags, gradual rollouts, canary releases,...

Universal Runtime best practices for PyTorch inference, Transformers models, and FastAPI serving. Covers device management, model loading, memory optimization, and performance tuning.

Cloudflare Workflows durable execution playbook: multi-step orchestration, state persistence, retries, sleep/scheduling, waitForEvent, external events, bindings, lifecycle management, limits,...

Configure request timeouts to prevent slow requests from blocking resources. Use for protecting APIs from long-running operations.