feat: initialize Geekeey Arcade .NET SDK repository

Single-commit squash of the repository history containing the Arcade .NET MSBuild SDK packages (base, Razor, Web, Test), their analyzer and editorconfig configuration, test suites, and CI workflows.
2026-10-23 23:23:40 +02:00 · 2026-10-23 23:23:40 +02:00 · 5cbf26e8a1
commit 5cbf26e8a1
31 changed files with 1905 additions and 0 deletions
--- a/src/sdk/README.md
+++ b/src/sdk/README.md
@ -0,0 +1,25 @@
+# Geekeey.Arcade.NET.Sdk
+
+Opinionated MSBuild SDKs for .NET projects with standardized build, analyzer, and editor configuration defaults:
+
+- `Geekeey.Arcade.NET.Sdk` — base SDK
+- `Geekeey.Arcade.NET.Sdk.Razor` — Razor class library and Blazor projects
+- `Geekeey.Arcade.NET.Sdk.Web` — ASP.NET Core web projects
+- `Geekeey.Arcade.NET.Sdk.Test` — test projects
+
+## Packaging metadata
+
+Set these properties in your project file or a directory-level props file. Unless stated otherwise, defaults apply only when the property is empty.
+
+| Property | Default | Description |
+| --- | --- | --- |
+| `Authors` | `The Geekeey Team` | Default authors when no value is set. |
+| `Copyright` | `Copyright (c) The Geekeey Team` | Default copyright when no value is set. |
+| `PublishRepositoryUrl` | `true` | Publishes the repository URL in packages. |
+| `IncludeSymbols` | `true` | Packs a symbol package. |
+| `SymbolPackageFormat` | `snupkg` | Format of the symbol package. |
+| `PackageReadmeFile` | `PACKAGE.md` when found | Packs a `PACKAGE.md` file from the project directory as the package readme. Not packed: `README.md` is for repository visitors. |
+| `SearchReadmeFileAbove` | `false` | When `true`, searches parent directories for a `PACKAGE.md` to pack. |
+| `PackageLicenseFile` | Detected license file | Packs and declares a `LICENSE.txt`, `LICENSE.md` or `LICENSE` file found in the project directory or a parent directory. Skipped when the project sets `PackageLicenseExpression` or `PackageLicenseFile`. |
+
+Within this repository, each SDK project lives alongside its package contents in `Sdk/<PackageId>/`, so its `PACKAGE.md` is discovered automatically.
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Geekeey.Arcade.NET.Sdk.Razor.csproj
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Geekeey.Arcade.NET.Sdk.Razor.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>netstandard2.0</TargetFramework>
+		<NoBuild>true</NoBuild>
+		<IncludeBuildOutput>false</IncludeBuildOutput>
+		<SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+		<IncludeSymbols>false</IncludeSymbols>
+		<Description>MSBuild SDK for Razor class library and Blazor projects with standardized build, analyzer, and editor configuration defaults.</Description>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="Sdk.props" Pack="true" PackagePath="Sdk/Sdk.props" />
+		<None Include="Sdk.targets" Pack="true" PackagePath="Sdk/Sdk.targets" />
+		<None Include="Geekeey.Arcade.NET.Sdk.Razor.editorconfig" Pack="true" PackagePath="configuration/Geekeey.Arcade.NET.Sdk.Razor.editorconfig" />
+		<None Include="../../common/Common.props" Pack="true" PackagePath="common/Common.props" />
+		<None Include="../../common/Common.targets" Pack="true" PackagePath="common/Common.targets" />
+		<None Include="../../configuration/**/*" Pack="true" PackagePath="configuration/%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Geekeey.Arcade.NET.Sdk.Razor.editorconfig
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Geekeey.Arcade.NET.Sdk.Razor.editorconfig
@ -0,0 +1,3 @@
+# global_level must be higher than the base editorconfig files
+is_global = true
+global_level = 1
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/PACKAGE.md
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/PACKAGE.md
@ -0,0 +1,29 @@
+# Geekeey.Arcade.NET.Sdk.Razor
+
+Opinionated MSBuild SDK for Razor class library and Blazor projects with standardized build, analyzer, and editor configuration defaults.
+
+## Getting started
+
+```xml
+<Project Sdk="Geekeey.Arcade.NET.Sdk.Razor/1.0.0">
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+	</PropertyGroup>
+</Project>
+```
+
+## What it provides
+
+- Everything from the base `Geekeey.Arcade.NET.Sdk` (language, analyzer, editor, and packaging defaults), layered on top of the `Microsoft.NET.Sdk.Razor` SDK.
+- Opinionated `.editorconfig` settings for Razor projects, applied automatically via `EditorConfigFiles` (including file-based programs when `FileBasedProgram=true`).
+
+## Opt-outs
+
+| Property | Effect |
+| --- | --- |
+| `EnableDefaultJsonSerializationOptions=false` | Skips the `System.Text.Json` nullable annotation defaults. |
+| `IncludeDefaultBannedSymbols=false` | Skips the built-in `BannedSymbols.txt`. |
+| `BannedNewtonsoftJsonSymbols=false` | Skips the built-in `BannedSymbols.NewtonsoftJson.txt`. |
+| `SearchReadmeFileAbove=true` | Also searches parent directories for a `PACKAGE.md` to pack. |
+
+See the [repository](https://code.geekeey.de/geekeey/arcade) for the full configuration.
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Sdk.props
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Sdk.props
@ -0,0 +1,16 @@
+<Project>
+	<PropertyGroup>
+		<_MustImportMicrosoftNETSdk Condition="'$(UsingMicrosoftNETSdk)' != 'true'">true</_MustImportMicrosoftNETSdk>
+
+		<CustomBeforeDirectoryBuildProps>$(CustomBeforeDirectoryBuildProps);$(MSBuildThisFileDirectory)../common/Common.props</CustomBeforeDirectoryBuildProps>
+		<BeforeMicrosoftNETSdkTargets>$(BeforeMicrosoftNETSdkTargets);$(MSBuildThisFileDirectory)/../common/Common.targets</BeforeMicrosoftNETSdkTargets>
+	</PropertyGroup>
+
+	<Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk.Razor" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+	<Import Project="$(MSBuildThisFileDirectory)../common/Common.props" Condition="'$(_MustImportMicrosoftNETSdk)' != 'true'" />
+
+	<ItemGroup>
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.Sdk.Razor.editorconfig" />
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.FileBasedProgram.editorconfig" Condition="'$(FileBasedProgram)' == 'true'" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Sdk.targets
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Razor/Sdk.targets
@ -0,0 +1,3 @@
+<Project>
+	<Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk.Razor" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Geekeey.Arcade.NET.Sdk.Test.csproj
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Geekeey.Arcade.NET.Sdk.Test.csproj
@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>netstandard2.0</TargetFramework>
+		<NoBuild>true</NoBuild>
+		<IncludeBuildOutput>false</IncludeBuildOutput>
+		<SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+		<IncludeSymbols>false</IncludeSymbols>
+		<IsPackable>true</IsPackable>
+		<!-- The packaging project is not a testing platform application itself: the Microsoft.Testing.Platform
+			package flows to consumers and defaults 'IsTestingPlatformApplication' to true there. -->
+		<IsTestingPlatformApplication>false</IsTestingPlatformApplication>
+		<Description>MSBuild SDK for test projects with standardized build, analyzer, and editor configuration defaults.</Description>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="Sdk.props" Pack="true" PackagePath="Sdk/Sdk.props" />
+		<None Include="Sdk.targets" Pack="true" PackagePath="Sdk/Sdk.targets" />
+		<None Include="Geekeey.Arcade.NET.Sdk.Test.editorconfig" Pack="true" PackagePath="configuration/Geekeey.Arcade.NET.Sdk.Test.editorconfig" />
+		<None Include="../../common/Common.props" Pack="true" PackagePath="common/Common.props" />
+		<None Include="../../common/Common.targets" Pack="true" PackagePath="common/Common.targets" />
+		<None Include="../../configuration/**/*" Pack="true" PackagePath="configuration/%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Geekeey.Arcade.NET.Sdk.Test.editorconfig
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Geekeey.Arcade.NET.Sdk.Test.editorconfig
@ -0,0 +1,20 @@
+# global_level must be higher than the base editorconfig files
+is_global = true
+global_level = 1
+
+# Identifiers should not contain underscores (CA1707)
+# https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/quality-rules/ca1707
+dotnet_diagnostic.CA1707.severity = none
+
+# Mark members as static (CA1822)
+# https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/quality-rules/ca1822
+dotnet_diagnostic.CA1822.severity = none
+
+# Make method synchronous (IDE0390 and IDE0391)
+# https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/style-rules/ide0390-ide0391
+dotnet_diagnostic.IDE0390.severity = none
+dotnet_diagnostic.IDE0391.severity = none
+
+# Remove unused parameter (IDE0060)
+# https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/style-rules/ide0060
+dotnet_diagnostic.IDE0060.severity = none
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/PACKAGE.md
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/PACKAGE.md
@ -0,0 +1,31 @@
+# Geekeey.Arcade.NET.Sdk.Test
+
+Opinionated MSBuild SDK for test projects with standardized build, analyzer, and editor configuration defaults.
+
+## Getting started
+
+```xml
+<Project Sdk="Geekeey.Arcade.NET.Sdk.Test/1.0.0">
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+	</PropertyGroup>
+</Project>
+```
+
+## What it provides
+
+- Everything from the base `Geekeey.Arcade.NET.Sdk` (language, analyzer, editor, and packaging defaults), layered on top of the `Microsoft.NET.Sdk` SDK.
+- Marks consuming projects as test projects by setting `IsTestProject=true` automatically.
+- `Microsoft.Testing.Platform.MSBuild` integration out of the box.
+- Opinionated `.editorconfig` settings for test projects, applied automatically via `EditorConfigFiles` (including file-based programs when `FileBasedProgram=true`).
+
+## Opt-outs
+
+| Property | Effect |
+| --- | --- |
+| `EnableDefaultJsonSerializationOptions=false` | Skips the `System.Text.Json` nullable annotation defaults. |
+| `IncludeDefaultBannedSymbols=false` | Skips the built-in `BannedSymbols.txt`. |
+| `BannedNewtonsoftJsonSymbols=false` | Skips the built-in `BannedSymbols.NewtonsoftJson.txt`. |
+| `SearchReadmeFileAbove=true` | Also searches parent directories for a `PACKAGE.md` to pack. |
+
+See the [repository](https://code.geekeey.de/geekeey/arcade) for the full configuration.
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Sdk.props
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Sdk.props
@ -0,0 +1,17 @@
+<Project>
+	<PropertyGroup>
+		<IsTestProject>true</IsTestProject>
+		<_MustImportMicrosoftNETSdk Condition="'$(UsingMicrosoftNETSdk)' != 'true'">true</_MustImportMicrosoftNETSdk>
+
+		<CustomBeforeDirectoryBuildProps>$(CustomBeforeDirectoryBuildProps);$(MSBuildThisFileDirectory)../common/Common.props</CustomBeforeDirectoryBuildProps>
+		<BeforeMicrosoftNETSdkTargets>$(BeforeMicrosoftNETSdkTargets);$(MSBuildThisFileDirectory)/../common/Common.targets</BeforeMicrosoftNETSdkTargets>
+	</PropertyGroup>
+
+	<Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+	<Import Project="$(MSBuildThisFileDirectory)../common/Common.props" Condition="'$(_MustImportMicrosoftNETSdk)' != 'true'" />
+
+	<ItemGroup>
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.Sdk.Test.editorconfig" />
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.FileBasedProgram.editorconfig" Condition="'$(FileBasedProgram)' == 'true'" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Sdk.targets
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Test/Sdk.targets
@ -0,0 +1,3 @@
+<Project>
+	<Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Geekeey.Arcade.NET.Sdk.Web.csproj
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Geekeey.Arcade.NET.Sdk.Web.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>netstandard2.0</TargetFramework>
+		<NoBuild>true</NoBuild>
+		<IncludeBuildOutput>false</IncludeBuildOutput>
+		<SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+		<IncludeSymbols>false</IncludeSymbols>
+		<Description>MSBuild SDK for ASP.NET Core web projects with standardized build, analyzer, and editor configuration defaults.</Description>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="Sdk.props" Pack="true" PackagePath="Sdk/Sdk.props" />
+		<None Include="Sdk.targets" Pack="true" PackagePath="Sdk/Sdk.targets" />
+		<None Include="Geekeey.Arcade.NET.Sdk.Web.editorconfig" Pack="true" PackagePath="configuration/Geekeey.Arcade.NET.Sdk.Web.editorconfig" />
+		<None Include="../../common/Common.props" Pack="true" PackagePath="common/Common.props" />
+		<None Include="../../common/Common.targets" Pack="true" PackagePath="common/Common.targets" />
+		<None Include="../../configuration/**/*" Pack="true" PackagePath="configuration/%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Geekeey.Arcade.NET.Sdk.Web.editorconfig
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Geekeey.Arcade.NET.Sdk.Web.editorconfig
@ -0,0 +1,3 @@
+# global_level must be higher than the base editorconfig files
+is_global = true
+global_level = 1
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/PACKAGE.md
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/PACKAGE.md
@ -0,0 +1,29 @@
+# Geekeey.Arcade.NET.Sdk.Web
+
+Opinionated MSBuild SDK for ASP.NET Core web projects with standardized build, analyzer, and editor configuration defaults.
+
+## Getting started
+
+```xml
+<Project Sdk="Geekeey.Arcade.NET.Sdk.Web/1.0.0">
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+	</PropertyGroup>
+</Project>
+```
+
+## What it provides
+
+- Everything from the base `Geekeey.Arcade.NET.Sdk` (language, analyzer, editor, and packaging defaults), layered on top of the `Microsoft.NET.Sdk.Web` SDK.
+- Opinionated `.editorconfig` settings for web projects, applied automatically via `EditorConfigFiles` (including file-based programs when `FileBasedProgram=true`).
+
+## Opt-outs
+
+| Property | Effect |
+| --- | --- |
+| `EnableDefaultJsonSerializationOptions=false` | Skips the `System.Text.Json` nullable annotation defaults. |
+| `IncludeDefaultBannedSymbols=false` | Skips the built-in `BannedSymbols.txt`. |
+| `BannedNewtonsoftJsonSymbols=false` | Skips the built-in `BannedSymbols.NewtonsoftJson.txt`. |
+| `SearchReadmeFileAbove=true` | Also searches parent directories for a `PACKAGE.md` to pack. |
+
+See the [repository](https://code.geekeey.de/geekeey/arcade) for the full configuration.
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Sdk.props
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Sdk.props
@ -0,0 +1,16 @@
+<Project>
+	<PropertyGroup>
+		<_MustImportMicrosoftNETSdk Condition="'$(UsingMicrosoftNETSdk)' != 'true'">true</_MustImportMicrosoftNETSdk>
+
+		<CustomBeforeDirectoryBuildProps>$(CustomBeforeDirectoryBuildProps);$(MSBuildThisFileDirectory)../common/Common.props</CustomBeforeDirectoryBuildProps>
+		<BeforeMicrosoftNETSdkTargets>$(BeforeMicrosoftNETSdkTargets);$(MSBuildThisFileDirectory)/../common/Common.targets</BeforeMicrosoftNETSdkTargets>
+	</PropertyGroup>
+
+	<Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk.Web" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+	<Import Project="$(MSBuildThisFileDirectory)../common/Common.props" Condition="'$(_MustImportMicrosoftNETSdk)' != 'true'" />
+
+	<ItemGroup>
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.Sdk.Web.editorconfig" />
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.FileBasedProgram.editorconfig" Condition="'$(FileBasedProgram)' == 'true'" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Sdk.targets
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk.Web/Sdk.targets
@ -0,0 +1,3 @@
+<Project>
+	<Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk.Web" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Geekeey.Arcade.NET.Sdk.csproj
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Geekeey.Arcade.NET.Sdk.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>netstandard2.0</TargetFramework>
+		<NoBuild>true</NoBuild>
+		<IncludeBuildOutput>false</IncludeBuildOutput>
+		<SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+		<IncludeSymbols>false</IncludeSymbols>
+		<Description>MSBuild SDK for .NET projects with standardized build, analyzer, and editor configuration defaults.</Description>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="Sdk.props" Pack="true" PackagePath="Sdk/Sdk.props" />
+		<None Include="Sdk.targets" Pack="true" PackagePath="Sdk/Sdk.targets" />
+		<None Include="Geekeey.Arcade.NET.Sdk.editorconfig" Pack="true" PackagePath="configuration/Geekeey.Arcade.NET.Sdk.editorconfig" />
+		<None Include="../../common/Common.props" Pack="true" PackagePath="common/Common.props" />
+		<None Include="../../common/Common.targets" Pack="true" PackagePath="common/Common.targets" />
+		<None Include="../../configuration/**/*" Pack="true" PackagePath="configuration/%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+</Project>
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Geekeey.Arcade.NET.Sdk.editorconfig
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Geekeey.Arcade.NET.Sdk.editorconfig
@ -0,0 +1,3 @@
+# global_level must be higher than the base editorconfig files
+is_global = true
+global_level = 1
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/PACKAGE.md
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/PACKAGE.md
@ -0,0 +1,33 @@
+# Geekeey.Arcade.NET.Sdk
+
+Opinionated MSBuild SDK for .NET projects with standardized build, analyzer, and editor configuration defaults.
+
+## Getting started
+
+```xml
+<Project Sdk="Geekeey.Arcade.NET.Sdk/1.0.0">
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+	</PropertyGroup>
+</Project>
+```
+
+## What it provides
+
+- Sensible language defaults: `ImplicitUsings` and `Nullable` enabled, extra global usings for `System.Diagnostics.CodeAnalysis`, `System.Globalization`, and `System.Text`.
+- Code quality defaults: `AnalysisLevel=latest`, `AnalysisMode=Recommended`, `EnforceCodeStyleInBuild`, nullable warnings as errors, and all warnings as errors on CI (`ContinuousIntegrationBuild`).
+- Opinionated `.editorconfig` settings, applied via `EditorConfigFiles` (including file-based programs when `FileBasedProgram=true`).
+- Banned API analysis with `Microsoft.CodeAnalysis.BannedApiAnalyzers` (with a built-in `BannedSymbols.txt`), public API analysis with `Microsoft.CodeAnalysis.PublicApiAnalyzers`, and RESX source generation with `Microsoft.CodeAnalysis.ResxSourceGenerator`.
+- `System.Text.Json` defaults that honor nullable annotations and `required` constructor parameters. Opt out with `EnableDefaultJsonSerializationOptions=false`.
+- NuGet packaging metadata defaults: `Authors`, `Copyright`, `PublishRepositoryUrl`, symbol packages (`snupkg`), and automatic packaging of a `PACKAGE.md` readme, `THIRD-PARTY-NOTICES` file, and a detected license file.
+
+## Opt-outs
+
+| Property | Effect |
+| --- | --- |
+| `EnableDefaultJsonSerializationOptions=false` | Skips the `System.Text.Json` nullable annotation defaults. |
+| `IncludeDefaultBannedSymbols=false` | Skips the built-in `BannedSymbols.txt`. |
+| `BannedNewtonsoftJsonSymbols=false` | Skips the built-in `BannedSymbols.NewtonsoftJson.txt`. |
+| `SearchReadmeFileAbove=true` | Also searches parent directories for a `PACKAGE.md` to pack. |
+
+See the [repository](https://code.geekeey.de/geekeey/arcade) for the full configuration.
--- a/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Sdk.props
+++ b/src/sdk/Sdk/Geekeey.Arcade.NET.Sdk/Sdk.props
@ -0,0 +1,16 @@
+<Project>
+	<PropertyGroup>
+		<_MustImportMicrosoftNETSdk Condition="'$(UsingMicrosoftNETSdk)' != 'true'">true</_MustImportMicrosoftNETSdk>
+
+		<CustomBeforeDirectoryBuildProps>$(CustomBeforeDirectoryBuildProps);$(MSBuildThisFileDirectory)../common/Common.props</CustomBeforeDirectoryBuildProps>
+		<BeforeMicrosoftNETSdkTargets>$(BeforeMicrosoftNETSdkTargets);$(MSBuildThisFileDirectory)/../common/Common.targets</BeforeMicrosoftNETSdkTargets>
+	</PropertyGroup>
+
+	<Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" Condition="'$(_MustImportMicrosoftNETSdk)' == 'true'" />
+	<Import Project="$(MSBuildThisFileDirectory)../common/Common.props" Condition="'$(_MustImportMicrosoftNETSdk)' != 'true'" />
+
+	<ItemGroup>
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.Sdk.editorconfig" />
+		<EditorConfigFiles Include="$(MSBuildThisFileDirectory)../configuration/Geekeey.Arcade.NET.FileBasedProgram.editorconfig" Condition="'$(FileBasedProgram)' == 'true'" />
+	</ItemGroup>
+</Project>
--- a/Show more
+++ b/Show more