---
name: nexus-clean-architecture
description: Clean Architecture & CQRS implementation for .NET 10
---
# Clean Architecture Standards

- **Folder Hierarchy:** Root must contain `/src` and `/tests`. Group logic by Feature (e.g., `src/Features/Reader/Queries/GetChapterContent`).
- **CQRS Flow:**
  - UI triggers `IMediator.Send()`.
  - Handler executes logic and returns `FluentResult.Result`.
  - No direct Database/API calls from Razor components.
- **MediatR:** Use `LuckyPennySoftware.MediatR` for implementation.
- **Mapster Integration:**
  - Centralize mapping configurations.
  - No AutoMapper allowed.
- **Functional Error Handling:**
  - Mandatory use of `FluentResult`. No exceptions for business logic flow.