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project-structure

.NET solution and project structure conventions. Covers .slnx format, Directory.Build.props, Directory.Packages.props for central package management, global usings, and naming conventions. Load this skill when setting up a new solution, adding projects, configuring build properties, or when the user mentions "solution structure", ".slnx", "Directory.Build.props", "central package management", "Directory.Packages.props", "global usings", ".editorconfig", "project layout", or "naming conventions".

skills/project-structure/SKILL.md

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Nov 4, 2026
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MIT

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# Project Structure

## Core Principles

1. **Central package management** — Use `Directory.Packages.props` to manage NuGet package versions in one place. No version numbers in individual `.csproj` files.
2. **Shared build properties** — Use `Directory.Build.props` for common settings (target framework, nullable, implicit usings). Don't repeat in every project.
3. **.slnx for solutions** — The new XML-based solution format is cleaner and more merge-friendly than the legacy `.sln` format.
4. **src/tests separation** — Source projects in `src/`, test projects in `tests/`. Clear boundary.

## Patterns

### Solution Layout

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