LiorCohen

End-to-end testing with Playwright - browser automation, visual regression, test data management.

D2 diagramming language reference for architecture diagrams, sequence diagrams, grid layouts, SQL tables, and class diagrams. Produces .d2 files rendered via CLI or playground.

MVVM architecture standards for React/TypeScript frontends with TanStack ecosystem, TailwindCSS, and Shadcn UI.

Single gateway for all core↔tech-pack interactions. Reads manifests, resolves paths, loads skills/agents, routes commands.

Unit testing patterns with Vitest - mocking, fixtures, isolation, and fast feedback.

Scaffolds Node.js/TypeScript backend components with CMDO architecture, driven by component settings.

Internal skill for managing workflow lifecycle state in sdd/workflows/. Provides session-independent, resumable workflow tracking.

Templates and validation for writing product specifications.

Manage spec registry and generate snapshots.

OpenAPI contract standards for API specification, versioning, and type generation.

Integration testing patterns - database setup/teardown, API testing, contract testing, and Testkube execution.

Standards for authoring SDD plugin agents — frontmatter, self-containment, skill references, and no-user-interaction rules.