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Guides AI agents to produce accurate, well-structured technical documentation in Markdown with Mermaid diagrams.

Guides AI agents to write correct, idiomatic Fastify code using plugins, routes, schemas, and lifecycle hooks.

Guides AI agents to write idiomatic, correct Node.js JavaScript code.

Guides AI agents to use Pino logging correctly — levels, structured logs, child loggers, and Fastify integration.

Guides AI agents to write secure Fastify/Node.js code — input validation, authentication, injection prevention, and safe error handling.