Diagrams

Component Layering (Clean Architecture)

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Used in: §9.1 API overview, §10.2 IDAClient, §14.x developer onboarding Audience: Backend Developer, DevOps IA ID: extra (referenced indirectly by §1.5)

Reading guide: Handlers never touch repositories or the chain directly. All chain calls flow through pkg/blockchain; all crypto goes through pkg/crypto. This is what doc-writer should reference when explaining the request lifecycle in §9.1.