release(v2): bump to 2.0.0.1 - ship the WAL FileStream.Position race fix

- All packages + Directory.Packages.props + build props bumped 2.0.0.0 -> 2.0.0.1 (4-part patch versioning).

- CHANGELOG [2.0.0.1] section documents the single-file corruption fix.

- Core NuGet.README updated to 2.0.0.1.

Author: MPCoreDeveloper

Directory.Packages.props

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
-    <SharpCoreDBVersion>2.0.0.0</SharpCoreDBVersion>
+    <SharpCoreDBVersion>2.0.0.1</SharpCoreDBVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="SharpCoreDB" Version="$(SharpCoreDBVersion)" />

Examples/CQRS/OrderManagement.CqrsDemo/OrderManagement.CqrsDemo.csproj

@@ -6,7 +6,7 @@
     <LangVersion>14.0</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <IsPackable>false</IsPackable>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == '' and Exists('..\..\..\src\SharpCoreDB.CQRS\SharpCoreDB.CQRS.csproj')">true</UseLocalSharpCoreDbSources>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == ''">false</UseLocalSharpCoreDbSources>

Examples/EventSourcing/OrderManagement.PersistentDemo/OrderManagement.PersistentDemo.csproj

@@ -6,7 +6,7 @@
     <LangVersion>14.0</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <IsPackable>false</IsPackable>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == '' and Exists('..\..\..\src\SharpCoreDB\SharpCoreDB.csproj')">true</UseLocalSharpCoreDbSources>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == ''">false</UseLocalSharpCoreDbSources>

Examples/EventSourcing/OrderManagement/OrderManagement.csproj

@@ -6,7 +6,7 @@
     <LangVersion>14.0</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <IsPackable>false</IsPackable>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == '' and Exists('..\..\..\src\SharpCoreDB.EventSourcing\SharpCoreDB.EventSourcing.csproj')">true</UseLocalSharpCoreDbSources>
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == ''">false</UseLocalSharpCoreDbSources>

Examples/FluentMigrator/SharpCoreDB.FluentMigratorDemo/SharpCoreDB.FluentMigratorDemo.csproj

@@ -6,7 +6,7 @@
     <LangVersion>14.0</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <IsPackable>false</IsPackable>
     <!-- Set to true to use local source projects instead of NuGet packages -->
     <UseLocalSharpCoreDbSources Condition="'$(UseLocalSharpCoreDbSources)' == '' and Exists('..\..\..\src\SharpCoreDB\SharpCoreDB.csproj')">true</UseLocalSharpCoreDbSources>

docs/CHANGELOG.md

@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.0.1] - 2026-09-01
+
+### Fixed
+
+- **Single-file data corruption under concurrent writes (critical)** — the WAL manager wrote to
+  the shared file stream with a bare `Position` + `WriteAsync`, while the background write-behind
+  worker wrote data pages under a lock. A concurrent `Position` mutation could land WAL bytes on a
+  data page, so a table's data block could read back as WAL/registry bytes instead of JSON after a
+  reopen (sporadic `JsonException '0x02'` / "Expected 100 rows, got 0"). All `FileStream.Position`
+  use is now serialized through `SingleFileStorageProvider.WriteAt` (header, WAL, delta writes,
+  reads, defrag). Regression covered by `VacuumStressTests` (failed ~50% before, stable after).
+- **4-part patch versioning** — this patch ships as `2.0.0.1` (NuGet shows `2.0.0.1`).
+
 ## [2.0.0.0] - 2026-09-01
 
 ### Release highlights

src/SharpCoreDB.Analytics/SharpCoreDB.Analytics.csproj

@@ -4,7 +4,7 @@
     <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
 
     <!-- NuGet Package Properties -->
     <PackageId>SharpCoreDB.Analytics</PackageId>

src/SharpCoreDB.CQRS/SharpCoreDB.CQRS.csproj

@@ -11,7 +11,7 @@
     <NoWarn>$(NoWarn);1591;SA1101;SA1633;SA1309</NoWarn>
 
     <PackageId>SharpCoreDB.CQRS</PackageId>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <Authors>MPCoreDeveloper</Authors>
     <Company>SharpCoreDB</Company>
     <Product>SharpCoreDB.CQRS</Product>

src/SharpCoreDB.Client.Protocol/SharpCoreDB.Client.Protocol.csproj

@@ -9,7 +9,7 @@
 
     <!-- Assembly info -->
     <AssemblyName>SharpCoreDB.Client.Protocol</AssemblyName>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <Description>Client-side protocol implementation for SharpCoreDB (gRPC, binary)</Description>
 
     <!-- NuGet Package Properties -->

src/SharpCoreDB.Client/SharpCoreDB.Client.csproj

@@ -9,7 +9,7 @@
 
     <!-- Assembly info -->
     <AssemblyName>SharpCoreDB.Client</AssemblyName>
-    <Version>2.0.0.0</Version>
+    <Version>2.0.0.1</Version>
     <Description>.NET client library for SharpCoreDB network server (ADO.NET-like API)</Description>
 
     <!-- NuGet packaging -->