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agentic-dev/docs/decisions/adr-005-atomic-design.md
Danijel Martinek f77e6ea881 chore(template): clean-slate template snapshot from bb4a0c7
Curated, product-agnostic snapshot of the post-story-04 tree: demo
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green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK
2026-07-12 20:40:54 +02:00

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# ADR-005: Atomic Design for UI Components
## Status: Accepted
## Context
Need a scalable component architecture for the shared UI package.
## Decision
Atomic Design (atoms/molecules/organisms/templates) + shadcn/ui + Storybook.
## Rationale
- Clear hierarchy makes agents know exactly where to place new components
- Import rules enforce composition direction (atoms never import molecules)
- Co-located stories make components self-documenting
- shadcn/ui provides excellent base atoms that map naturally to atomic levels
- Storybook sidebar mirrors the hierarchy via story titles
- Pages live in apps (not UI package) — they connect to real data
## Update (2026-05-04)
Atomic Design now applies to `@repo/core-ui/` only — generic primitives (atoms, molecules, generic organisms, templates). Feature-specific components (e.g., `ArticleCard`, `HeaderNavMenu`) live in the owning feature's `ui/` folder per the vertical-feature architecture. See ADR-006.