chore: MeshWeaver.Fixture + the two TestBases move from src/ to test/ — never packed or published again

.claude/skills/sigsegv/SKILL.md

@@ -88,7 +88,7 @@ the process happened to be. Where the evidence lives:
   `TEST_START` / `TEST_END` window markers and `[FAULT]` records with stacks, joinable by `pid=`.
   A `TEST_START` with no `TEST_END` names the test a killed host was stuck in.
   🚨 Records are rate-bounded — `grep FAULT-BUDGET` before reasoning from an *absence*.
-- **`test-logs/teardown-stragglers.log`** (`src/MeshWeaver.Fixture/TeardownStragglerCapturer.cs`) —
+- **`test-logs/teardown-stragglers.log`** (`test/MeshWeaver.Fixture/TeardownStragglerCapturer.cs`) —
   `FirstChanceException` dumps every straggler with a stack, **including the caught ones invisible
   everywhere else**. This is the diagnostic for "all tests pass, host exits non-zero". Run the
   native host the way CI does (`dotnet <Suite>.dll -trx …` from the bin dir); `dotnet test` is not

MeshWeaver.slnx

@@ -40,15 +40,15 @@
     <Project Path="src/MeshWeaver.Data/MeshWeaver.Data.csproj" />
     <Project Path="src/MeshWeaver.Documentation/MeshWeaver.Documentation.csproj" />
     <Project Path="src/MeshWeaver.Domain/MeshWeaver.Domain.csproj" />
-    <Project Path="src/MeshWeaver.Fixture/MeshWeaver.Fixture.csproj" />
+    <Project Path="test/MeshWeaver.Fixture/MeshWeaver.Fixture.csproj" />
     <Project Path="src/MeshWeaver.Reactive.Assertions/MeshWeaver.Reactive.Assertions.csproj" />
     <Project Path="src/MeshWeaver.Maps/MeshWeaver.Maps.csproj" />
     <Project Path="src/MeshWeaver.Hosting.AspNetCore/MeshWeaver.Hosting.AspNetCore.csproj" />
     <Project Path="src/MeshWeaver.Graph/MeshWeaver.Graph.csproj" />
     <Project Path="src/MeshWeaver.GitSync/MeshWeaver.GitSync.csproj" />
     <Project Path="src/MeshWeaver.Hosting.Monolith/MeshWeaver.Hosting.Monolith.csproj" />
     <Project Path="src/MeshWeaver.Hosting.Orleans/MeshWeaver.Hosting.Orleans.csproj" />
-    <Project Path="src/MeshWeaver.Hosting.Orleans.TestBase/MeshWeaver.Hosting.Orleans.TestBase.csproj" />
+    <Project Path="test/MeshWeaver.Hosting.Orleans.TestBase/MeshWeaver.Hosting.Orleans.TestBase.csproj" />
     <Project Path="src/MeshWeaver.Hosting.Embeddings/MeshWeaver.Hosting.Embeddings.csproj" />
     <Project Path="src/MeshWeaver.Hosting/MeshWeaver.Hosting.csproj" />
     <Project Path="src/MeshWeaver.Kernel.Hub/MeshWeaver.Kernel.Hub.csproj" />
@@ -74,7 +74,7 @@
     <File Path="test/appsettings.json" />
     <File Path="test/Directory.Build.props" />
     <File Path="test/Directory.Packages.props" />
-    <Project Path="src/MeshWeaver.Hosting.Monolith.TestBase/MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <Project Path="test/MeshWeaver.Hosting.Monolith.TestBase/MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <Project Path="test/MeshWeaver.Content.Test/MeshWeaver.Content.Test.csproj" />
     <Project Path="test/MeshWeaver.ContentCollections.Test/MeshWeaver.ContentCollections.Test.csproj" />
     <Project Path="test/MeshWeaver.ContentCollections.Indexing.Test/MeshWeaver.ContentCollections.Indexing.Test.csproj" />

scripts/type-forwards.allow

@@ -26,12 +26,3 @@
 # pre-split). A forwarder is impossible here: the base would have to reference the AI assembly,
 # which references the base (the documented reference-cycle case).
 
-# #2771 — ObservableAwait leaves MeshWeaver.Fixture for MeshWeaver.Messaging.Hub (namespace
-# MeshWeaver.Fixture → MeshWeaver.Messaging), so product code gets the deadlock-safe bridge. No
-# shipped package can hold the TypeRef: the type was added 2026-08-30 by #2750, one day AFTER the
-# last release (v3.0.0-rc8, 2026-08-29), and the shipped MeshWeaver.Fixture 3.0.0-rc8 nupkg was
-# pulled from nuget.org and inspected — it contains no ObservableAwait (control: HubTestBase,
-# TestBase, ConfigureMesh all present in the same DLL). Fixture is in no module bundle or bake
-# surface; its only consumers are TestBase assemblies and test projects that compile from source.
-# A forwarder is impossible without keeping `namespace MeshWeaver.Fixture` inside a product
-# assembly, which would tell product code to `using MeshWeaver.Fixture` — the wrong direction.

src/MeshWeaver.Documentation/Data/Architecture/WritingTests.md

@@ -515,7 +515,7 @@ Use `FullyQualifiedName~` — it is the only `--filter` property this repo uses
 ## Test Project Layout
 
 - Framework code lives in `src/`, tests in `test/`, with one `*.Test` project per production project where it makes sense.
-- Shared fixtures live in `src/MeshWeaver.Hosting.Monolith.TestBase` and the Orleans test base.
+- Shared fixtures live in `test/MeshWeaver.Hosting.Monolith.TestBase` and the Orleans test base.
 - NodeType tests live in the NodeType's `Test/` namespace (`Namespace/Type/Test/TypeTest.cs`).
 
 ---
@@ -528,4 +528,4 @@ Use `FullyQualifiedName~` — it is the only `--filter` property this repo uses
 - [Asynchronous Calls](/Doc/Architecture/AsynchronousCalls) — why hub-reachable code is `IObservable<T>`, never `Task<T>`
 - [CQRS — Queries vs. Content Access](/Doc/Architecture/CqrsAndContentAccess) — why `ReadNode` is the right read after a write
 - [Debugging Message Flow](/Doc/Architecture/DebuggingMessageFlow) — reading the framework's own trace when a test hangs
-- `src/MeshWeaver.Hosting.Monolith.TestBase/MonolithMeshTestBase.cs` — the base every monolith test inherits
+- `test/MeshWeaver.Hosting.Monolith.TestBase/MonolithMeshTestBase.cs` — the base every monolith test inherits

src/MeshWeaver.Documentation/Data/DataMesh/NodeTypes/Testing.md

@@ -72,9 +72,10 @@ The `.csproj` needs a handful of standard references. Use `test/MeshWeaver.Acme.
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <!-- test-support only: lives under test/ (never packed or published) since 2026-08-30 -->
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith\MeshWeaver.Hosting.Monolith.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting\MeshWeaver.Hosting.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Layout\MeshWeaver.Layout.csproj" />

test/BlockingBridgeSites.allow

@@ -88,9 +88,11 @@ test/MeshWeaver.ContentCollections.Test/ObservableCollectionSurfaceTest.cs	2
 test/MeshWeaver.Documentation.Test/BlockingBridgeSelfDeadlockMechanismTest.cs	1
 test/MeshWeaver.Graph.Test/NodeTypeAdoptionRegistryTest.cs	3
 test/MeshWeaver.Graph.Test/NodeTypeBakeStatusTest.cs	2
-test/MeshWeaver.Graph.Test/OverlayReEvaluationReadTest.cs	3
 test/MeshWeaver.Hosting.Orleans.Test/OrleansEventSubscriptionTimerTest.cs	1
 test/MeshWeaver.Hosting.Test/AlcLeaseRegistryTest.cs	3
 test/MeshWeaver.Messaging.Hub.Test/SystemScopeDoesNotEscapeTest.cs	3
 test/MeshWeaver.PluginCatalog.Test/FeatureFlagReaderTest.cs	7
 test/MeshWeaver.PluginCatalog.Test/PackageParameterResolutionTest.cs	1
+# Moved here from ProductionBlockingBridgeSites.allow on 2026-08-30 with the Orleans TestBase (src/ → test/):
+# the same single site, now under the test tree this ratchet scans — not a new bridge.
+test/MeshWeaver.Hosting.Orleans.TestBase/OrleansClusterDisposal.cs	1

test/Directory.Build.props

@@ -83,13 +83,19 @@
   <ItemGroup>
     <!-- Global project reference: every test project gets the assertion library. -->
     <ProjectReference Include="$(MSBuildThisFileDirectory)..\src\MeshWeaver.Reactive.Assertions\MeshWeaver.Reactive.Assertions.csproj" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" />
-    <PackageReference Include="xunit.v3" />
-    <PackageReference Include="xunit.runner.visualstudio">
+    <!-- The three test-SUPPORT libraries (MeshWeaver.Fixture and the two TestBase assemblies) moved
+         here from src/ on 2026-08-30 so they are never packed or published again. They are
+         LIBRARIES: no test SDK, no xunit runner, no generated entry point — a generated
+         XunitAutoGeneratedEntryPoint in a library duplicates the consumer's (CS0436) and turns
+         every referenced base into a second test host. They opt out with
+         MeshWeaverTestSupportLibrary=true; everything else under test/ is a test project. -->
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Condition="'$(MeshWeaverTestSupportLibrary)' != 'true'" />
+    <PackageReference Include="xunit.v3" Condition="'$(MeshWeaverTestSupportLibrary)' != 'true'" />
+    <PackageReference Include="xunit.runner.visualstudio" Condition="'$(MeshWeaverTestSupportLibrary)' != 'true'">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3.runner.console">
+    <PackageReference Include="xunit.v3.runner.console" Condition="'$(MeshWeaverTestSupportLibrary)' != 'true'">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

test/Memex.Portal.Shared.Test/Memex.Portal.Shared.Test.csproj

@@ -25,7 +25,7 @@
          cancellation raised by the CALLER is reported as a database verdict (#1183). -->
     <!-- LocalMeshApiRoutesTest asserts the headless sidecar maps the same /api/mesh/* verbs the JS
          shells call — an unmapped one there answers the SPA fallback with a 200, not a 404 (#1474). -->
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <!-- ViewPackModuleTest asserts on each view pack's module attribute, and all of them left
          Memex.Portal.Shared's closure when they flipped to modules/ (#1974) — so the test anchors
          the packs itself rather than riding portal references that no longer exist. Safe here
@@ -39,6 +39,6 @@
          DbVersion.Latest drift shipped a dead image while main stayed green (V53, 2026-08-14). -->
     <!-- OAuthCodeStoreTest runs against a full monolith mesh (the store persists
          authorization codes as mesh nodes — the multi-replica safety contract). -->
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
   </ItemGroup>
 </Project>

test/MeshWeaver.AccessControl.Test/MeshWeaver.AccessControl.Test.csproj

@@ -4,7 +4,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Layout\MeshWeaver.Layout.csproj" />
   </ItemGroup>
 </Project>

test/MeshWeaver.Acme.Test/MeshWeaver.Acme.Test.csproj

@@ -19,11 +19,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith\MeshWeaver.Hosting.Monolith.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Markdown\MeshWeaver.Markdown.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting\MeshWeaver.Hosting.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Layout\MeshWeaver.Layout.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Mesh.Contract\MeshWeaver.Mesh.Contract.csproj" />

test/MeshWeaver.Auth.Test/MeshWeaver.Auth.Test.csproj

@@ -5,7 +5,7 @@
   <ItemGroup>
     <ProjectReference Include="..\..\memex\Memex.Portal.Shared\Memex.Portal.Shared.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
   </ItemGroup>
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />

test/MeshWeaver.Autocomplete.Test/MeshWeaver.Autocomplete.Test.csproj

@@ -20,11 +20,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith\MeshWeaver.Hosting.Monolith.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting\MeshWeaver.Hosting.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Mesh.Contract\MeshWeaver.Mesh.Contract.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Layout\MeshWeaver.Layout.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Documentation\MeshWeaver.Documentation.csproj" />

test/MeshWeaver.Content.Test/MeshWeaver.Content.Test.csproj

@@ -29,12 +29,12 @@
     </ItemGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+        <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith\MeshWeaver.Hosting.Monolith.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting\MeshWeaver.Hosting.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Kernel.Hub\MeshWeaver.Kernel.Hub.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Mesh.Contract\MeshWeaver.Mesh.Contract.csproj" />
-        <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+        <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Layout\MeshWeaver.Layout.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
         <ProjectReference Include="..\..\src\MeshWeaver.Documentation\MeshWeaver.Documentation.csproj" />

test/MeshWeaver.ContentCollections.Indexing.Graph.Test/MeshWeaver.ContentCollections.Indexing.Graph.Test.csproj

@@ -9,7 +9,7 @@
     <ProjectReference Include="..\..\src\MeshWeaver.ContentCollections\MeshWeaver.ContentCollections.csproj" />
     <!-- Real workspace + mesh: MonolithMeshTestBase. -->
     <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith\MeshWeaver.Hosting.Monolith.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Hosting.Monolith.TestBase\MeshWeaver.Hosting.Monolith.TestBase.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Graph\MeshWeaver.Graph.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.Mesh.Contract\MeshWeaver.Mesh.Contract.csproj" />
     <!-- Layout-area rendering (DocumentBlocksAreaRenderTest): LayoutAreaReference + the

test/MeshWeaver.ContentCollections.Indexing.Test/MeshWeaver.ContentCollections.Indexing.Test.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\MeshWeaver.ContentCollections.Indexing\MeshWeaver.ContentCollections.Indexing.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
   </ItemGroup>
 
 </Project>

test/MeshWeaver.ContentCollections.Test/MeshWeaver.ContentCollections.Test.csproj

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="DocumentFormat.OpenXml" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <ProjectReference Include="..\..\src\MeshWeaver.ContentCollections\MeshWeaver.ContentCollections.csproj" />
   </ItemGroup>
   <ItemGroup>

test/MeshWeaver.Data.Test/MeshWeaver.Data.Test.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\MeshWeaver.Data\MeshWeaver.Data.csproj" />
-    <ProjectReference Include="..\..\src\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
+    <ProjectReference Include="..\MeshWeaver.Fixture\MeshWeaver.Fixture.csproj" />
     <!-- IMeshChangeFeed / MeshChangeEvent live here. src/MeshWeaver.Data resolves them by
          reflection (to avoid a Data→Mesh.Contract→Layout→Data prod cycle); a leaf TEST
          project referencing them directly is cycle-free and lets the test drive the feed. -->

test/MeshWeaver.Documentation.Test/BlockingBridgeInTestRatchetGuard.cs

@@ -82,7 +82,7 @@ public class BlockingBridgeInTestRatchetGuard(ITestOutputHelper output)
     /// the shape; this stops the list as a WHOLE from growing — including by the trick of adding a
     /// new file's line. Lower it whenever you delete or lower an entry.
     /// </summary>
-    private const int TotalBudget = 38;
+    private const int TotalBudget = 36;
 
     /// <summary>
     /// <c>test/</c> only — this guard exists because tests were treated as exempt from the

test/MeshWeaver.Documentation.Test/HubDisposalJoinRatchetGuard.cs

@@ -287,8 +287,11 @@ private static bool IsHarnessFile(string relative)
             // The shared test bases and the fixture library they are built on.
             "src" => parts[1].EndsWith(".TestBase", StringComparison.Ordinal)
                      || parts[1].Contains(".Fixture", StringComparison.Ordinal),
-            // Fixtures only — test BODIES are bounded by their base class's join (see the remarks).
-            "test" => parts[1].Contains(".Fixture", StringComparison.Ordinal)
+            // The shared test bases and the fixture library (under test/ since 2026-08-30, so they
+            // are never packed or published) plus fixtures — test BODIES are bounded by their base
+            // class's join (see the remarks).
+            "test" => parts[1].EndsWith(".TestBase", StringComparison.Ordinal)
+                      || parts[1].Contains(".Fixture", StringComparison.Ordinal)
                       || parts[^1].Contains("Fixture", StringComparison.Ordinal),
             _ => false,
         };