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Use when animation doesn't work as expected, has bugs, or behaves inconsistently

ALWAYS use when working with Angular Route Resolvers, data pre-fetching, or loading data before route activation.

Use this skill when working with game balancing - economy design, difficulty curves, progression systems, reward schedules, playtesting analysis, or tuning game parameters. Triggers on any game design task involving resource sinks and faucets, XP curves, loot tables, difficulty scaling, player retention mechanics, or interpreting playtest data to adjust game feel.

Use when creating animations that feel warm, welcoming, and make users feel comfortable engaging.

Use when creating ongoing animations - loading spinners, pulsing indicators, ambient motion, background effects, or any animation that repeats indefinitely.

Configure structured logging with Pino. Outputs human-readable colorized logs in development and structured JSON in production for log aggregation services.

Crash-hunter skill for iOS 26 / Swift 6.2 clinic-architecture codebases that finds and fixes concurrency, memory, and I/O bugs using TDD. Covers data races,…

ALWAYS use when working with Angular Elements, web components, custom elements, or packaging Angular components for non-Angular applications.

Guide the design and management of trading venue connectivity and market data infrastructure. Use when building or troubleshooting FIX sessions for order…

Complete guide for Rust systems programming including ownership, borrowing, concurrency, async programming, unsafe code, and performance optimization

Expert-level Spring Boot, Spring Framework, REST APIs, and microservices development

pydantic-ai-testing — an installable skill for AI agents, published by existential-birds/beagle.

nginx C module performance optimization and reliability guidelines based on the official nginx development guide. This skill should be used when optimizing…

React Native Elements UI component library best practices for performance, theming, and proper component usage. Use when building React Native apps with RNE,…

Optimize MATLAB code for better performance through vectorization, memory management, and profiling. Use when user requests optimization, mentions slow code,…

Process and implement code review feedback systematically. Use when user provides reviewer comments, PR feedback, code review notes, or asks to implement…

Maintain portfolio allocations over time using calendar-based, threshold-based, and tax-efficient rebalancing strategies. Use when the user asks about when to…

Complete Surfpool development environment for Solana - drop-in replacement for solana-test-validator with mainnet forking, cheatcodes, Infrastructure as Code,…

Build production-grade Laravel REST APIs using opinionated architecture patterns with Laravel best practices. Use when building, scaffoling, or reviewing…

Sets up Neon Auth for your application. Configures authentication, creates auth routes, and generates UI components. Use when adding authentication to Next.js,…