Frontend

A comprehensive pattern for handling asynchronous operations in JavaScript/TypeScript applications with automatic cleanup, graceful error handling, and memory leak prevention. Use when building async operations that need timeout control, cancellation support, retry logic, or graceful error handling.

How tests should be structured, named, and prioritized in this codebase.

Production-tested integration patterns for connecting React frontends to Cloudflare Worker backendswith Hono, Clerk authentication, and D1 databases. Prevents common frontend-backend connection issues,CORS errors, auth token failures, and race conditions.Use when: connecting frontend to backend, implementing auth flow, setting up API calls,troubleshooting CORS, fixing race conditions, auth tokens not passing, frontend-backend connection errors,401 errors, integrating Clerk with Workers, setting up full-stack Cloudflare app, vite cloudflare plugin setup.Prevents: CORS errors, 401 Unauthorized, auth token mismatches, race conditions with auth loading,environment variable confusion, frontend calling wrong endpoints, JWT verification errors, D1 connection issues.Keywords: frontend backend integration, Cloudflare Workers, Hono, Clerk auth, JWT verification, CORS, React API client,race conditions, auth loading, connection issues, full-stack integration, vite plugin, @cloudflare/vite-plugin,D1 database,

Use when working with Next.js 15 features, App Router, Server Components, Server Actions, or data fetching patterns. Ensures correct usage of Server vs Client Components and modern Next.js patterns.

Design AI-powered immersive NPC systems for escape room games using proven actor techniques from Korean immersive escape rooms (Danpyeonsun, Ledasquare). Implements adaptive dialogue, emotional simulation, player profiling, and trust dynamics using Gemini/GPT-4. Creates character profiles with lying probabilities, improvisational responses, and cost-optimized streaming. Use for murder mystery NPCs, suspect interrogation, or dynamic character interactions.

Build distinctive, production-grade frontend interfaces with memorable aesthetics. Use when creating web components, pages, or applications. Prioritizes creative, context-specific design over generic patterns.

Maintains synchronized project context for long-running work across sessions.Use when: starting a session (read context), completing significant work (update context),making architectural decisions (document rationale), or before stopping work (ensure clean handoff).Triggers on: "continue working", "what's next", "resume", "pick up where", "context", "progress","document", "handoff", "session", "PROGRESS.md", "plan feature", "feature list"

Guide for implementing MCP Apps (SEP-1865) - interactive UI extensions for MCP servers. Use when building MCP servers that need to return rich, interactive HTML-based UIs alongside tool results for conversational AI hosts like Claude Desktop or ChatGPT.

cc-sdd (Claude Code Spec-Driven Development) 統合スキル。/kiro:* コマンドで呼び出し可能。要件定義、設計、タスク分解、実装を自動化。Use when: spec-driven development, requirements, design, tasks, /kiro commands,設計, タスク分解, 仕様から実装へ, Plans.md generation.

Research and discover programmatic SEO opportunities for your app. Use this skill to identify high-value page types, validate search demand, analyze competition, and prioritize opportunities before building.

Build OpenCode plugins, agents, hooks, and tools. Use when creating, reviewing, or debugging OpenCode extensions. Covers plugin architecture, agent configuration, lifecycle hooks, custom tools, and distribution. Invoke PROACTIVELY when user mentions OpenCode plugins, agents, hooks, or wants to extend OpenCode functionality.

Validates project after initialization. Checks static files, endpoints, CSS, health.Use when: after rust-project-init, before TDD loop.Triggers: "validate project", "check project", "verify init".

Builds full-stack applications with Payload CMS, the Next.js-native headless CMS. Use when creating content-driven apps with TypeScript, code-first configuration, and full control over your backend.

Review React hook usage for React 19 compliance and best practices

Enforce comprehensive deployment verification after deploying code, scripts, or configurations. Use after any deployment, build, or installation operation. Prevents deployment verification failures (FP-9).

Conversion rate optimization (CRO) patterns for Next.js applications including CTA design, landing page layouts, trust signals, form optimization, pricing tables, and A/B testing. Use when building landing pages, optimizing CTAs, adding social proof, or improving conversion funnels.

MoAI-ADK's foundational principles - TRUST 5, SPEC-First TDD, delegation patterns, token optimization, progressive disclosure, modular architecture, agent catalog, command reference, and execution rules for building AI-powered development workflows

Deploy the resume app to Cloudflare Pages using the documented build and wrangler steps. Use when deploying, troubleshooting deploys, or updating Pages-related CI configuration.

Zustand state management for React Native. Use when implementing client-side state.

Optimize application performance including build times, runtime speed, bundle size and resource usage. Use when addressing performance issues, implementing caching strategies, or optimizing rendering.