using-virtuoso

More from krzysztofsurdy/code-virtuoso

• refactoring

  Comprehensive skill for 89 refactoring techniques and 22 code smells with practical examples. Use when the user asks to refactor code, detect code smells, improve code quality, reduce complexity, or clean up technical debt. Covers composing methods, moving features between objects, organizing data, simplifying conditionals and method calls, dealing with generalization, and detecting smells across bloaters, OO abusers, change preventers, dispensables, and couplers with before/after comparisons and step-by-step mechanics.

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• clean-architecture

  Clean Architecture, Hexagonal Architecture (Ports and Adapters), and Domain-Driven Design fundamentals. Use when the user asks to design system architecture, define layer boundaries, apply DDD tactical patterns (entities, value objects, aggregates, repositories), structure a hexagonal application, enforce dependency rules, or evaluate whether a codebase needs architectural refactoring. Covers bounded contexts, use cases, domain services, and framework-independent design.

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• testing

  Stack-agnostic testing principles, strategies, and patterns for building reliable test suites. Use when the user asks to design a test strategy, choose between unit/integration/e2e tests, apply TDD, fix flaky tests, improve test quality, use test doubles (mocks, stubs, fakes, spies), or review tests for antipatterns. Covers the testing pyramid, test design heuristics, arrange-act-assert structure, test isolation, property-based testing, and common testing pitfalls.

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• design-patterns

  Comprehensive skill for all 26 Gang of Four design patterns with practical implementations and real-world examples. Use when the user asks to apply a design pattern, refactor code using patterns, choose between competing patterns, or review existing pattern usage. Covers creational (Abstract Factory, Builder, Factory Method, Prototype, Singleton, Object Pool), structural (Adapter, Bridge, Composite, Decorator, Facade, Flyweight, Proxy, Private Class Data), and behavioral patterns (Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Template Method, Visitor, Null Object) with real-world examples, trade-offs, and anti-patterns.

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• api-design

  REST and GraphQL API design principles for consistent, predictable, and evolvable APIs. Use when the user asks to design a new API, review an existing API, choose between REST and GraphQL, plan API versioning, define error response contracts, implement pagination, or establish API standards for a team. Covers resource modeling, endpoint naming, HTTP methods, status codes, authentication patterns, rate limiting, HATEOAS, and API evolution strategies.

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• scrum

  Scrum framework fundamentals, sprint goal writing, and agile ceremony facilitation. Use when the user asks to plan a sprint, write sprint goals, facilitate daily scrums, run sprint reviews or retrospectives, define scrum roles, manage the product backlog, or apply agile estimation techniques. Covers the three pillars (transparency, inspection, adaptation), scrum artifacts, goal-writing templates (SMART, FOCUS, FAB), and team velocity tracking.

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