Frontend

Teaches Context API patterns in React 19 including use() hook for conditional context access. Use when implementing Context, avoiding prop drilling, or managing global state.

Build stateful serverless applications using Cloudflare Workers and Durable Objects. Use when creating real-time collaborative apps, chat systems, multiplayer games, WebSocket servers, rate limiters, or any application requiring coordination between clients, persistent state, or scheduled tasks with Cloudflare's edge computing platform.

Approach for planning and implementing code changes. Use when starting new features, starting bug fixes, beginning any implementation work, or when unsure how to approach a coding task. Covers learning the codebase first, verifying approaches, and writing simple maintainable code.

Complete guide for Svelte 5 runes ($state, $derived, $effect, $props, $bindable). Use for any Svelte 5 project or when code contains $ prefixed runes. Essential for reactive state management, computed values, side effects, and component props. Covers migration from Svelte 4 reactive statements.

Spec-driven development methodology for ANY software project.USE WHEN developing features, fixing bugs, creating skills, or preparing releases.USE WHEN user mentions specs, testing, release process, change proposals, or deployment.Provides flexible spec tooling guidance but STRICT release discipline.

Comprehensive guide to integrating skills with Claude Code's 12 hook events. Use when creating hook-aware skills for harnesses like Clausitron, or when needing hook response schemas and patterns.

Use when creating React/Vue components or adding UI features. Enforces composition patterns and state management best practices.

Build terminal UIs with Bubbletea, Bubbles, Lipgloss, and Huh. Use when creating TUI applications, interactive forms, styled terminal output, or when user mentions Bubbletea, Bubbles, Lipgloss, Huh, Charm, or TUI development.

Interactive Java/Spring Boot learning skill for experienced Go developers. Use when the user wants to learn Java, practice Spring Boot, work on Java exercises, or asks for Java explanations in Go terms. Supports mood-aware pacing with "low energy" mode for difficult days. Teaches through iterative project building rather than passive learning.

Guide for implementing Grafana Loki - a horizontally scalable, highly available log aggregation system. Use when configuring Loki deployments, setting up storage backends (S3, Azure Blob, GCS), writing LogQL queries, configuring retention and compaction, deploying via Helm, integrating with OpenTelemetry, or troubleshooting Loki issues on Kubernetes.

Require comprehensive WHY/WHEN/HOW documentation for all functions. Apply when writing functions, classes, or complex logic to explain purpose, usage context, and implementation approach.

Investigates JetBrains IntelliJ Platform theme properties by searching source code. Use when user asks about UI theming, icon colors, tab spacing, component styling, or needs to find what properties are themeable vs hardcoded in IntelliJ-based IDEs.

Code-centric Goal-Oriented Action Planning integrated with SPARC methodology. Use for feature implementation planning, performance optimization goals, testing strategy development, or any software development objective requiring systematic breakdown with measurable success criteria.

Implement mobile-first responsive designs with fluid layouts, standard breakpoints, and relative units to ensure optimal viewing experiences across all device sizes from mobile to desktop. Use this skill when creating or modifying UI layouts, implementing media queries, defining responsive breakpoints, or ensuring components adapt properly to different screen sizes. Use this skill when working with component files that render layouts, grids, navigation menus, or any UI elements that need to adjust based on viewport width. Use this skill when testing UI changes across mobile, tablet, and desktop screen sizes, optimizing touch targets for mobile users, or ensuring readable typography across all breakpoints.

Use when updating filter options in Dawncaster card/talent browser after game expansions release - systematically checks ALL filter types (categories, rarities, types, banners, expansions) across both HTML dropdowns and JavaScript arrays to prevent missing updates

Guide for implementing Tailwind CSS - a utility-first CSS framework for rapid UI development. Use when styling applications with responsive design, dark mode, custom themes, or building design systems with Tailwind's utility classes.

Guides consistent, correct implementation of Stripe payment processing including payment flows, webhooks, subscriptions, and customer management. Use when integrating Stripe payments, setting up subscriptions, implementing webhooks, or managing customer billing.

Frontend development skill for React, Next.js, Tailwind CSS, and TypeScript. Use when implementing web frontend features.

Garante uso correto do Bootstrap 5 sem CSS customizado. Use quando criar ou modificar HTML, estilizar componentes, ajustar layout, ou o usuário mencionar Bootstrap, grid, responsividade, ou classes CSS.

Track complex, multi-session work with dependency graphs using beads issue tracker. Use when work spans multiple sessions, has complex dependencies, or requires persistent context across compaction cycles. For simple single-session linear tasks, TodoWrite remains appropriate.