Development & Cloud Operations Skills

CI/CD specialist for TypeScript DDD projects on GitHub Actions. Use this skill whenever: a GitHub Actions workflow is failing or missing; tsc reports type errors in CI; Vitest tests are red in the pipeline; the user wants to verify the project is ready to deploy or merge; or any combination of "CI is broken", "types are failing", "tests won't pass", "fix the pipeline", "deploy ready", "prepare for production", "make CI green". Covers scaffolding missing workflow files, diagnosing and fixing TypeScript errors, diagnosing and fixing Vitest failures, and running a pre-deploy readiness gate. Always invoke before touching any .yml, tsconfig, or test file in a CI context.

Multi-stage Docker builds, Docker Compose for local dev, Redis Socket.IO adapter for horizontal scaling, and safe Prisma production migrations.

Strict TDD for Domain and Application layers in Clean Architecture TypeScript. Red-Green-Refactor with Vitest. Mocks ports, never hits a database.

Map bounded contexts for a TypeScript DDD project — identify context boundaries, define ubiquitous language, map relationships (ACL, Partnership, Shared Kernel, etc.), and surface aggregate roots and domain events. Trigger when the user says "map the domain", "define bounded contexts", "what are the aggregates", "design the domain model", "identify the ubiquitous language", "how should we split this domain", or when planning a new feature that touches multiple domain areas. Also trigger when the user describes a business process and wants to know how to structure it in DDD.

Design and implement CI/CD pipelines for a TypeScript DDD clean architecture project — GitHub Actions, GitLab CI, Docker builds, environment promotion, and secrets management. Trigger when the user says "set up CI", "add a pipeline", "automate tests", "write a GitHub Actions workflow", "configure deployment", "add Docker support", "set up CD", "automate the build", or when the project needs automated quality gates before merge. Also trigger when the user asks about environment promotion (dev → staging → prod) or secrets management strategy.

Enforces Hexagonal Architecture, Domain-Driven Design (DDD), and Event-Driven workflows for Node.js using Express, Prisma, and Socket.IO.

Design and implement the Repository pattern in a TypeScript DDD clean architecture project — define repository interfaces in the domain layer and implementations in the infrastructure layer. Trigger when the user says "create a repository", "implement persistence", "add database access", "wire up TypeORM/Prisma/Drizzle", "implement the repository interface", "add Unit of Work", "how do I persist this aggregate", or when connecting domain aggregates to any data store. Also trigger when reviewing persistence code that may be violating the dependency rule.

Runtime request validation with Zod for Express and Socket.IO. Generates TypeScript DTOs via z.infer. Blocks unvalidated data from reaching Use Cases.

Rédaction d'Architecture Decision Records (ADR) pour documenter les choix d'architecture avec leur contexte, alternatives et conséquences.