Move source projects under src/ directory

Relocates Reactor, Reactor.Analyzers, Reactor.Cli, Reactor.Interop.WinForms,
Reactor.Localization.Generator, and vscode-reactor under a top-level src/
directory, following standard project convention and separating source
from tests/, samples/, and docs/.

Updated:
- Reactor.sln project paths
- ProjectReference paths in 61 consuming .csproj files (tests, samples,
  docs/apps)
- Reactor.Cli.csproj SelfHostDir and SKILL.md resource paths to account
  for the new depth
- .gitignore Rust differ path
- README.md, CONTRIBUTING.md, samples/WinFormsInterop/README.md paths
- Doc references from `duct` CLI command to actual `mur` binary name
  in CONTRIBUTING.md, docs/templates/ai-author-skill.md,
  docs/reference/localization-ci.md, docs/spec/013-doc-system-design.md

Verified: dotnet test tests/Reactor.Tests -> 3518 passed, 0 failed, 46 skipped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: codemonkeychris

.gitignore

@@ -203,5 +203,5 @@ health/
 selfhost/
 
 # Rust build artifacts
-Reactor/Native/differ/target/
+src/Reactor/Native/differ/target/
 samples/apps/reactorfiles/Native/reactorfs/target/

CONTRIBUTING.md

@@ -23,7 +23,7 @@ dotnet restore Reactor.sln
 dotnet build Reactor.sln -p:Platform=x64
 
 # Build just the framework
-dotnet build Reactor/Reactor.csproj -p:Platform=x64
+dotnet build src/Reactor/Reactor.csproj -p:Platform=x64
 ```
 
 ### From Visual Studio
@@ -224,7 +224,7 @@ dotnet run --project samples/Reactor.TestApp -p:Platform=x64
 ## Project layout
 
 ```
-Reactor/                          Core framework library
+src/Reactor/                      Core framework library
   Core/
     Component.cs               Base Component class, hook methods
     Element.cs                 40+ virtual element record types
@@ -262,7 +262,7 @@ Reactor/                          Core framework library
         reconcile.rs           Keyed list reconciliation with LIS
         ffi.rs                 extern "C" FFI entry points
         arena.rs               Reusable diff context/buffer
-Reactor.Cli/                      CLI scaffolding tool (duct --create <Name>)
+src/Reactor.Cli/                  CLI scaffolding tool (mur --create <Name>)
 tests/
   Reactor.Tests/                  1. Unit tests — xUnit (2,200+ tests, no UI window)
   Reactor.AppTests/               2+3. Test runner — MSTest (orchestrates selfhost + E2E tests)
@@ -279,7 +279,7 @@ samples/
 
 Adding a new WinUI control to Reactor requires changes in four places:
 
-### 1. Define the element record (`Reactor/Core/Element.cs`)
+### 1. Define the element record (`src/Reactor/Core/Element.cs`)
 
 ```csharp
 public record MyControlElement(
@@ -288,14 +288,14 @@ public record MyControlElement(
 ) : Element;
 ```
 
-### 2. Add a DSL factory method (`Reactor/Elements/Dsl.cs`)
+### 2. Add a DSL factory method (`src/Reactor/Elements/Dsl.cs`)
 
 ```csharp
 public static MyControlElement MyControl(string label, Action? onClick = null)
     => new(label, onClick);
 ```
 
-### 3. Add a mount handler (`Reactor/Core/Reconciler.Mount.cs`)
+### 3. Add a mount handler (`src/Reactor/Core/Reconciler.Mount.cs`)
 
 ```csharp
 private FrameworkElement MountMyControl(MyControlElement el)
@@ -313,7 +313,7 @@ private FrameworkElement MountMyControl(MyControlElement el)
 
 Register it in the mount dispatch switch in `Mount()`.
 
-### 4. Add an update handler (`Reactor/Core/Reconciler.Update.cs`)
+### 4. Add an update handler (`src/Reactor/Core/Reconciler.Update.cs`)
 
 ```csharp
 private void UpdateMyControl(WinUI.MyControl control, MyControlElement old, MyControlElement @new)
@@ -325,7 +325,7 @@ private void UpdateMyControl(WinUI.MyControl control, MyControlElement old, MyCo
 
 Register it in the update dispatch switch in `Update()`.
 
-### 5. (Optional) Add modifiers (`Reactor/Elements/ElementExtensions.cs`)
+### 5. (Optional) Add modifiers (`src/Reactor/Elements/ElementExtensions.cs`)
 
 If the control has properties that make sense as fluent modifiers, add extension methods.
 
@@ -335,7 +335,7 @@ Add test cases in `tests/Reactor.Tests/` covering element creation, mount, and u
 
 ## How to add a new hook
 
-Hooks live in `Reactor/Core/Component.cs` (public API) and `Reactor/Core/RenderContext.cs` (implementation).
+Hooks live in `src/Reactor/Core/Component.cs` (public API) and `src/Reactor/Core/RenderContext.cs` (implementation).
 
 1. Add the hook method to `Component` (delegates to `RenderContext`)
 2. Implement the logic in `RenderContext`, using `GetOrCreateHook<T>()` to manage state
@@ -344,19 +344,19 @@ Hooks live in `Reactor/Core/Component.cs` (public API) and `Reactor/Core/RenderC
 
 ## Working on the Rust native differ
 
-The differ lives in `Reactor/Native/differ/`. It's a standalone Rust crate that builds as a `cdylib`.
+The differ lives in `src/Reactor/Native/differ/`. It's a standalone Rust crate that builds as a `cdylib`.
 
 ```bash
 # Build the differ directly
-cd Reactor/Native/differ
+cd src/Reactor/Native/differ
 cargo build
 cargo test
 
 # Run clippy
 cargo clippy
 ```
 
-The C# interop layer is `Reactor/Native/ViewDiffer.cs`. If you change any struct layouts in `types.rs`, you **must** update the matching C# structs in `ViewDiffer.cs` — there are no compile-time checks across the FFI boundary (see the [code review](docs/viewdiffer-code-review.md) for details).
+The C# interop layer is `src/Reactor/Native/ViewDiffer.cs`. If you change any struct layouts in `types.rs`, you **must** update the matching C# structs in `ViewDiffer.cs` — there are no compile-time checks across the FFI boundary (see the [code review](docs/viewdiffer-code-review.md) for details).
 
 Key files:
 - `src/types.rs` — wire types shared between Rust and C#

README.md

@@ -214,15 +214,15 @@ The extension:
 ## Project structure
 
 ```
-Reactor/                  Core framework
+src/Reactor/              Core framework
   Core/                Reconciler, components, hooks, elements
   Elements/            DSL factory methods + fluent modifiers
   Flex/                FlexPanel — CSS Flexbox layout via Yoga engine
   Yoga/                Pure C# port of Meta's Yoga layout engine
   Hosting/             App bootstrap, render loop, hot reload, preview capture server
   Native/              Experimental Rust differ (ViewDiffer)
-Reactor.Cli/              CLI scaffolding tool
-vscode-reactor/           VS Code extension — live preview panel
+src/Reactor.Cli/          CLI scaffolding tool
+src/vscode-reactor/       VS Code extension — live preview panel
 tests/
   Reactor.Tests/          Unit tests — xUnit, 2,200+ tests incl. 590 Yoga layout fixtures
   Reactor.AppTests/       Test runner — MSTest, orchestrates selfhost + Appium tests
@@ -238,9 +238,9 @@ samples/
 
 | Doc | Description |
 |-----|-------------|
-| [Getting Started](Reactor/Docs/GettingStarted.md) | Tutorial — elements, layout, state, components |
-| [Architecture](Reactor/Docs/Architecture.md) | Virtual tree, reconciler, hooks, design decisions |
-| [Flex Layout Spec](Reactor/Docs/specs/flex-layout.md) | CSS Flexbox via Yoga — FlexPanel design and API |
+| [Getting Started](src/Reactor/Docs/GettingStarted.md) | Tutorial — elements, layout, state, components |
+| [Architecture](src/Reactor/Docs/Architecture.md) | Virtual tree, reconciler, hooks, design decisions |
+| [Flex Layout Spec](src/Reactor/Docs/specs/flex-layout.md) | CSS Flexbox via Yoga — FlexPanel design and API |
 | [Contributing](CONTRIBUTING.md) | Build, test, add features, code style |
 | [State & Hooks](docs/reference/state-and-hooks.md) | Deep dive on the hook system and reactivity |
 | [Reconciliation](docs/reference/reconciliation.md) | How tree diffing works (C# and Rust paths) |

Reactor.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 18
 VisualStudioVersion = 18.4.11605.240
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor", "Reactor\Reactor.csproj", "{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor", "src\Reactor\Reactor.csproj", "{A1B2C3D4-E5F6-7890-ABCD-EF1234567890}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Tests", "tests\Reactor.Tests\Reactor.Tests.csproj", "{F81B468C-EF75-4BF9-A7F6-08B716392575}"
 EndProject
@@ -15,7 +15,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "wordpuzzle", "wordpuzzle",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WordPuzzle", "samples\apps\wordpuzzle\WordPuzzle.csproj", "{10FAAB08-2527-4869-960E-D3AB3600E5C9}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Cli", "Reactor.Cli\Reactor.Cli.csproj", "{62CDF797-49E4-4226-A710-2568EADF346B}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Cli", "src\Reactor.Cli\Reactor.Cli.csproj", "{62CDF797-49E4-4226-A710-2568EADF346B}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "reactorfiles", "reactorfiles", "{7E6CF6B0-0B2E-9DA2-0313-0F50037052B7}"
 EndProject
@@ -61,7 +61,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ReactorCharting.Sample", "s
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ReactorCharting.Tests", "tests\ReactorCharting.Tests\ReactorCharting.Tests.csproj", "{AB5F71EF-1207-43EB-8F2A-CA71B69E9A9D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Localization.Generator", "Reactor.Localization.Generator\Reactor.Localization.Generator.csproj", "{668249A5-5FEE-4E78-B52E-9DE59E7F2F44}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Localization.Generator", "src\Reactor.Localization.Generator\Reactor.Localization.Generator.csproj", "{668249A5-5FEE-4E78-B52E-9DE59E7F2F44}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "perf_bench", "perf_bench", "{2268BD01-6EA1-E862-8C11-B8CD1B59120C}"
 EndProject
@@ -167,7 +167,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "validation-showcase", "vali
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ValidationShowcase", "samples\apps\validation-showcase\ValidationShowcase.csproj", "{2A0A6F22-B477-4DC2-8764-29D86CB8CAB6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Analyzers", "Reactor.Analyzers\Reactor.Analyzers.csproj", "{8FA513F7-C65E-4494-9250-CDAF9D12C814}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Analyzers", "src\Reactor.Analyzers\Reactor.Analyzers.csproj", "{8FA513F7-C65E-4494-9250-CDAF9D12C814}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StylingGallery", "samples\StylingGallery\StylingGallery.csproj", "{B0EBF931-A237-4C60-A726-781A98B0119D}"
 EndProject
@@ -177,7 +177,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HeadTrax", "samples\apps\he
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StressPerf.ReactorGrid", "tests\stress_perf\StressPerf.ReactorGrid\StressPerf.ReactorGrid.csproj", "{C40A5F65-286C-401B-A996-47A48D4A84DF}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Interop.WinForms", "Reactor.Interop.WinForms\Reactor.Interop.WinForms.csproj", "{0C150D1A-0233-4E8B-93D1-ACCB66ABA918}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Reactor.Interop.WinForms", "src\Reactor.Interop.WinForms\Reactor.Interop.WinForms.csproj", "{0C150D1A-0233-4E8B-93D1-ACCB66ABA918}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WinFormsInterop", "samples\WinFormsInterop\WinFormsInterop.csproj", "{098C0749-222B-40A6-9CF9-81C8AF44041B}"
 EndProject

docs/apps/accessibility/accessibility.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>

docs/apps/advanced/advanced.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>

docs/apps/animation/animation.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>

docs/apps/calculator/calculator.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>

docs/apps/charting/charting.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>

docs/apps/collections/collections.csproj

@@ -12,6 +12,6 @@
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\Reactor\Reactor.csproj" />
+    <ProjectReference Include="..\..\..\src\Reactor\Reactor.csproj" />
   </ItemGroup>
 </Project>