Development

Error handling patterns across languages and layers — operational vs programmer errors, retry strategies, circuit breakers, error boundaries, HTTP responses, graceful degradation, and structured logging. Use when designing error strategies, building resilient APIs, or reviewing error management.

Caching strategies, invalidation, eviction policies, HTTP caching, distributed caching, and anti-patterns. Use when designing cache layers, choosing eviction policies, debugging stale data, or optimizing read-heavy workloads.

Comprehensive UX design patterns for Rails applications including responsive design, animations/transitions, dark mode, loading states, form UX, and performance optimization. Use this skill when implementing user-facing features requiring polished interactions and responsive layouts. Trigger keywords: UX, responsive, mobile-first, animation, transition, dark mode, loading, skeleton, progress, toast, form validation, performance, Core Web Vitals, user flow

Translate user prompts into structured requirements, user stories, and beads tasks. Use when: (1) Parsing user feature requests, (2) Creating acceptance criteria, (3) Breaking down epics into tasks, (4) Auto-generating beads issues. Trigger keywords: requirements, user story, acceptance criteria, as a, i want, so that, given when then, task breakdown, epic creation

Expert tvOS decisions for iOS developers: when to use custom focus effects vs system defaults, Siri Remote gesture trade-offs, Top Shelf content strategies, and 10-foot UI adaptation patterns. Use when building tvOS apps, debugging focus issues, or designing TV-optimized interfaces. Trigger keywords: tvOS, Focus Engine, @FocusState, isFocused, focusable, focusSection, Siri Remote, Top Shelf, TVTopShelfContentProvider, 10-foot UI, CardButtonStyle, large cards

Expert SwiftGen decisions for iOS/tvOS: when type-safe assets add value, template selection trade-offs, organization strategies, and build phase configuration. Use when setting up SwiftGen, choosing templates, or debugging generation issues. Trigger keywords: SwiftGen, type-safe, Asset, L10n, ImageAsset, ColorAsset, FontFamily, swiftgen.yml, structured-swift5, code generation, asset catalog

Expert Swift decisions Claude doesn't instinctively make: struct vs class trade-offs, @MainActor placement, async/await vs Combine selection, memory management pitfalls, and iOS-specific anti-patterns. Use when writing Swift code for iOS/tvOS apps, reviewing Swift architecture decisions, or debugging memory/concurrency issues. Trigger keywords: Swift, iOS, tvOS, actor, async, Sendable, retain cycle, memory leak, struct, class, protocol, generic

Expert notification decisions for iOS/tvOS: when to request permission, silent vs visible notification trade-offs, rich notification strategies, and APNs architecture choices. Use when implementing push notifications, debugging delivery issues, or designing notification UX. Trigger keywords: push notification, UNUserNotificationCenter, APNs, device token, silent notification, content-available, mutable-content, notification extension, notification actions, badge

Expert localization decisions for iOS/tvOS: when runtime language switching is needed vs system handling, pluralization rule complexity by language, RTL layout strategies, and string key architecture. Use when internationalizing apps, handling RTL languages, or debugging localization issues. Trigger keywords: localization, i18n, l10n, NSLocalizedString, Localizable.strings, stringsdict, plurals, RTL, Arabic, Hebrew, SwiftGen, language switching

Expert DI decisions for iOS/tvOS: when DI containers add value vs overkill, choosing between injection patterns, protocol design for testability, and SwiftUI-specific injection strategies. Use when designing service layers, setting up testing infrastructure, or deciding how to wire dependencies. Trigger keywords: dependency injection, DI, constructor injection, protocol, mock, testability, container, factory, @EnvironmentObject, service locator

Expert Coordinator pattern decisions for iOS/tvOS: when coordinators add value vs overkill, parent-child coordinator hierarchy design, SwiftUI vs UIKit coordinator differences, and flow completion handling. Use when designing navigation architecture, implementing multi-step flows, or decoupling views from navigation. Trigger keywords: Coordinator, navigation, flow, parent coordinator, child coordinator, deep link, routing, navigation hierarchy, flow completion

Expert Swift concurrency decisions: async let vs TaskGroup selection, actor isolation boundaries, @MainActor placement strategies, Sendable conformance judgment calls, and structured vs unstructured task trade-offs. Use when designing concurrent code, debugging data races, or choosing between concurrency patterns. Trigger keywords: async, await, actor, Task, TaskGroup, @MainActor, Sendable, concurrency, data race, isolation, structured concurrency, continuation

Expert Combine decisions for iOS/tvOS: when Combine vs async/await, Subject selection trade-offs, operator chain design, and memory management patterns. Use when implementing reactive streams, choosing between concurrency models, or debugging Combine memory leaks. Trigger keywords: Combine, Publisher, Subscriber, Subject, PassthroughSubject, CurrentValueSubject, async/await, AnyCancellable, sink, operators, reactive

Expert Clean Architecture decisions for iOS/tvOS: when Clean Architecture adds value vs overkill, layer boundary judgment calls, dependency rule violations to catch, and practical trade-offs between purity and pragmatism. Use when designing app architecture, debugging layer violations, or deciding what belongs where. Trigger keywords: Clean Architecture, layer, domain, data, presentation, use case, repository, dependency rule, entity, DTO, mapper

Expert lifecycle decisions for iOS/tvOS: when SwiftUI lifecycle vs SceneDelegate, background task strategies, state restoration trade-offs, and launch optimization. Use when managing app state transitions, handling background work, or debugging lifecycle issues. Trigger keywords: lifecycle, scenePhase, SceneDelegate, AppDelegate, background task, state restoration, launch time, didFinishLaunching, applicationWillTerminate, sceneDidBecomeActive

Repository interface and implementation patterns with offline-first strategies

GetX navigation patterns including routing, parameters, guards, deep linking, and custom transitions for Flutter applications

Exception classes, failure classes, Either type, and error handling strategies

WCAG 2.2 Level AA compliance patterns for Flutter applications including Semantics widgets, screen reader support, keyboard navigation, and color contrast requirements

TailAdmin dashboard UI framework patterns and Tailwind CSS classes. ALWAYS use this skill when: (1) Building any dashboard or admin panel interface, (2) Creating data tables, cards, charts, or metrics displays, (3) Implementing forms, buttons, alerts, or modals, (4) Building navigation (sidebar, header, breadcrumbs), (5) Any UI work that should follow TailAdmin design. This skill REQUIRES fetching from the official GitHub repository to ensure accurate class usage - NEVER invent classes.

How the Rails Enterprise Dev plugin discovers and uses project skills dynamically

Comprehensive guide to Object-Oriented Programming in Ruby and Rails covering classes, modules, design patterns, SOLID principles, and modern Ruby 3.x features

Comprehensive Ruby on Rails conventions, design patterns, and idiomatic code standards. Use this skill when writing any Rails code including controllers, models, services, or when making architectural decisions about code organization, naming conventions, and Rails best practices.

Comprehensive internationalization skill for Ruby on Rails applications with proper English and Arabic translations, RTL support, pluralization rules, date/time formatting, and culturally appropriate content adaptation.