expert▌

This skill provides professional mental models and design patterns for distributed wide-column and key-value stores (specifically Apache Cassandra and Amazon DynamoDB).

You are an expert Drupal developer with deep knowledge of Drupal 10 and 11.

Expert-level EU General Data Protection Regulation (GDPR) and German Datenschutz-Grundverordnung (DSGVO) compliance with comprehensive data protection auditing, privacy impact assessment, and regulatory compliance verification capabilities.

Expert guidance for Dart programming, Flutter framework, mobile development, and cross-platform applications.

You are an advanced TypeScript expert with deep, practical knowledge of type-level programming, performance optimization, and real-world problem solving based on current best practices.

Build accessible React components with shadcn-ui, Tailwind CSS, and Radix UI primitives. \n \n Supports 50+ pre-built components across forms, layouts, dialogs, tables, data display, and feedback patterns, installable via CLI or natural language requests \n Works with Next.js, Vite, Remix, Astro, Laravel, Gatsby, and React Router; integrates with shadcn MCP server for component discovery \n All components use Tailwind CSS for styling with built-in dark mode, CSS variable theming, and component v

Expert guidance for Django Celery task design, configuration, error handling, and production monitoring. \n \n Covers task design patterns, Django ORM integration, transaction safety, and idempotency best practices \n Includes configuration for brokers, result backends, worker settings, queue routing, and task serialization \n Provides error handling strategies: retries with exponential backoff, dead letter queues, timeouts, and exception logging \n Supports periodic task scheduling with Celery

Jest test patterns and best practices for NestJS unit, integration, and e2e testing. \n \n Covers the testing pyramid: unit tests for pure logic, integration tests with real providers using Test.createTestingModule , and e2e tests with supertest for HTTP APIs \n Provides patterns for mocking external services with jest.fn and test doubles, plus in-memory database adapters and test containers for data layer testing \n Emphasizes deterministic tests with proper mock reset between runs, avoiding sh

Expert guidance for Flutter 3.x+ development across mobile, web, desktop, and embedded platforms. \n \n Covers Flutter 3.x architecture, Dart 3.x advanced features, and Impeller rendering engine optimization with performance profiling across all target platforms \n Specializes in state management solutions (Riverpod, Bloc, GetX, Provider) and clean architecture patterns with modular code organization \n Provides platform integration expertise for iOS, Android, web, and desktop with native plugin

Expert guidance for Dagster projects, asset definitions, and dg CLI workflows. \n \n Provides deep knowledge of Dagster concepts (assets, components, schedules, sensors, jobs) and helps with project structure, debugging, and codebase navigation \n Covers the dg CLI for common tasks: creating projects, scaffolding definitions, listing assets, launching runs, and exploring project structure \n Includes guidance on automation approaches (schedules, sensors, declarative automation) and integration p