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docs/architecture/20-architecture-checklist.md

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+# 20. Architecture Checklist
+
+| Category | Item | Status |
+|----------|------|--------|
+| **Core Architecture** | | |
+| | High-level architecture diagram | ✅ |
+| | Technology stack justified | ✅ |
+| | Data flow documented | ✅ |
+| | Scalability considered | ✅ |
+| **Data Layer** | | |
+| | Database schema defined | ✅ |
+| | Relationships documented | ✅ |
+| | Indexes identified | ✅ |
+| | Migration strategy | ✅ |
+| **API Design** | | |
+| | API contracts defined | ✅ |
+| | Input validation | ✅ |
+| | Error responses standardized | ✅ |
+| | Authentication/Authorization | ✅ |
+| **Frontend** | | |
+| | Component architecture | ✅ |
+| | State management | ✅ |
+| | Routing strategy | ✅ |
+| | Error boundaries | ✅ |
+| **Security** | | |
+| | Authentication flow | ✅ |
+| | Input sanitization | ✅ |
+| | CORS/CSP headers | ✅ |
+| | Secrets management | ✅ |
+| **Performance** | | |
+| | Caching strategy | ✅ |
+| | Database optimization | ✅ |
+| | Bundle optimization | ✅ |
+| | Loading states | ✅ |
+| **DevOps** | | |
+| | CI/CD pipeline | ✅ |
+| | Docker configuration | ✅ |
+| | Environment separation | ✅ |
+| | Deployment strategy | ✅ |
+| **Observability** | | |
+| | Logging strategy | ✅ |
+| | Health checks | ✅ |
+| | Metrics collection | ✅ |
+| | Error tracking | ✅ |
+
+---