7171488b8b
Le backend suit le pattern ports & adapters (ports dans domain/ports.py, adaptateurs dans infra/), pas Clean Architecture au sens Uncle Bob. Aligne la terminologie dans README, docs/architecture.md, ADR guide, audit master, fiche audit 01, et la nav mkdocs. Les noms de fichiers et la commande /audit:clean-architecture restent stables pour preserver les liens croises et les skills existants.
52 lines
2.3 KiB
Markdown
52 lines
2.3 KiB
Markdown
# Architecture Decision Records (ADR) — Guide
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## What is an ADR?
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An ADR is a short document that captures a significant architectural decision, along with the context and consequences. ADRs create a **decision log** so future contributors understand *why* the codebase looks the way it does.
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## When to Write an ADR
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Write an ADR when:
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- Choosing or replacing a framework, library, or tool
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- Changing the architecture (new layer, new pattern, new boundary)
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- Making a trade-off that future developers might question
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- Deciding NOT to do something (these are often the most valuable)
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Do NOT write an ADR for:
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- Implementation details that are obvious from the code
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- Formatting or style choices (those go in [coding-standards.md](coding-standards.md))
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- Bug fixes or minor refactors
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## How to Write an ADR
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1. Copy `adr-template.md` to `docs/architecture/adrs/ADR-NNN-short-title.md`
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2. Number sequentially (ADR-001, ADR-002, ...)
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3. Fill in all sections — especially **Context** (the *why*) and **Alternatives Considered**
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4. Set status to `Proposed`
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5. Open a PR for team review
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6. Once merged, update status to `Accepted`
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## Existing Decisions (captured retroactively)
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These decisions were made before the ADR process was introduced. They are documented here for context:
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| Decision | Rationale | Date |
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|----------|-----------|------|
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| Hexagonal Architecture (ports & adapters) for backend | Decouple domain from framework — enable converter swapping (local/remote) via ports | 2025-01 |
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| FastAPI over Django | Async-first, lightweight, Pydantic-native — better fit for a single-purpose API | 2025-01 |
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| Vue 3 + Pinia over React | Composition API + built-in reactivity — smaller bundle for this use case | 2025-01 |
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| SQLite over PostgreSQL | Single-file DB, zero ops — appropriate for a document processing tool | 2025-01 |
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| Karate over Playwright for e2e | Team expertise, unified API+UI testing, JVM ecosystem | 2026-03 |
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| Feature flags via `/api/health` | No external service needed — backend capabilities drive frontend UI | 2026-03 |
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## Lifecycle
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```
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Proposed → Accepted → [Deprecated | Superseded by ADR-NNN]
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```
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- **Deprecated**: The decision is no longer relevant (feature removed, context changed)
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- **Superseded**: A newer ADR replaces this one (link to the new ADR)
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- Never delete an ADR — mark it as deprecated/superseded instead
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