Guide for conducting comprehensive accessibility audits of code to identify WCAG compliance issues and barriers to inclusive design. This skill should be used when reviewing accessibility, ARIA implementation, keyboard navigation, or screen reader compatibility.
Implement typed business operations with ActiveInteraction. Covers input types, composition, controller patterns, and testing.
Software design principles and patterns. This skill should be used when making architectural decisions, designing classes or modules, or evaluating code structure. Use proactively when discussing SOLID principles, coupling, cohesion, connascence, refactoring structure, class design, module boundaries, dependency injection, or the Four Rules of Simple Design. (user)
Implement business logic with ActiveInteraction and AASM state machines. Routes to specialized skills for typed operations and state management.
Implement state machines with AASM for workflow management. Covers state transitions, guards, callbacks, and testing.
Handle refinement of next actions when user rejects suggestions, wants to change context, defer, delegate, or break down further. Use when a suggested action doesn't fit or circumstances change.
Record domain events and dispatch to inbox handlers for side effects, audit trails, and activity feeds. Use when building activity logs, syncing external services, or decoupling event creation from processing. Triggers on event recording, audit trails, activity feeds, or inbox patterns.
Fast, non-poisoning synchronization primitives
Analyze story dependencies, detect issues, and generate visual dependency graphs
Expert methodology for identifying, assessing, and mitigating technical and operational risks including security, incidents, compliance, and disaster recovery.
Expert methodology for making and documenting critical architectural decisions using ADRs, trade-off analysis, migration planning, and technical debt management.
Maintain Structurizr C4 architecture diagrams in sync with code changes. Use when adding components, modifying relationships, changing architectural boundaries, or implementing new patterns. Ensures workspace.dsl accurately reflects the current system architecture.
This skill should be used when working with applesauce-core library for Nostr client development, including event stores, queries, observables, and client utilities. Provides comprehensive knowledge of applesauce patterns for building reactive Nostr applications.
Async channel patterns for Rust (async-channel, tokio, crossbeam)
Design component architecture and module structure using established architectural patterns for clean, maintainable, and scalable systems.
Implement features with code, tests, and documentation. Use when building features from approved designs following TDD and project coding standards.
Rust error handling with anyhow and thiserror
Design and implement DDD patterns (entities, value objects, aggregates, CQRS). Use when creating new domain objects, implementing bounded contexts, designing repository interfaces, or learning proper layer separation. For fixing existing Deptrac violations, use the deptrac-fixer skill instead.
Scala 3.4+ development specialist covering Akka, Cats Effect, ZIO, and Spark patterns. Use when building distributed systems, big data pipelines, or functional programming applications.
Enterprise context and session management with token budget optimization and state persistence
Java 21 LTS development specialist covering Spring Boot 3.3, virtual threads, pattern matching, and enterprise patterns. Use when building enterprise applications, microservices, or Spring projects.
Comprehensive error handling methodology with 13-category taxonomy, diagnostic workflows, recovery patterns, and prevention guidelines. Use when error rate >5%, MTTD/MTTR too high, errors recurring, need systematic error prevention, or building error handling infrastructure. Provides error taxonomy (file operations, API calls, data validation, resource management, concurrency, configuration, dependency, network, parsing, state management, authentication, timeout, edge cases - 95.4% coverage), 8 diagnostic workflows, 5 recovery patterns, 8 prevention guidelines, 3 automation tools (file path validation, read-before-write check, file size validation - 23.7% error prevention). Validated with 1,336 historical errors, 85-90% transferability across languages/platforms, 0.79 confidence retrospective validation.
Go 1.23+ development specialist covering Fiber, Gin, GORM, and concurrent programming patterns. Use when building high-performance microservices, CLI tools, or cloud-native applications.
Strategic thinking framework integrating First Principles Analysis, Stanford Design Thinking, and MIT Systems Engineering for deeper problem-solving and decision-making
