Add agentless adoption tool for endpoints

Standalone one-shot enrollment tool that creates a ShopDB PC + Endpoint entry using only the endpoints collector key, reusing the existing collector adopt path. Collects identity, WMI hardware, and installed-software SBOM; requires admin. Server-side packaging route attaches to the existing endpoints blueprint; no core contract change.

agent/ShopDbAdoptionTool/ShopDbAdoptionTool.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+	<OutputType>Exe</OutputType>
+	<TargetFramework>net8.0-windows</TargetFramework>
+	<ImplicitUsings>enable</ImplicitUsings>
+	<Nullable>enable</Nullable>
+	<RootNamespace>ShopDbAdoptionTool</RootNamespace>
+	<AssemblyName>shopdb-adopt</AssemblyName>
+	<!-- 0.1.0 (SPIKE): one-shot, agentless enrollment. Uses only the endpoints
+		 collector key to create a ShopDB PC (Computer) + Endpoint entry via the
+		 existing POST /api/collector/endpoints adopt path. Deliberately NOT the
+		 endpoint agent: no service, no polling, no delivery. For sites that want
+		 an inventory entry without running the full agent. -->
+	<Version>0.1.0</Version>
+	<InvariantGlobalization>true</InvariantGlobalization>
+	<RuntimeIdentifier>win-x64</RuntimeIdentifier>
+	<SelfContained>true</SelfContained>
+	<PublishSingleFile>true</PublishSingleFile>
+	<IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
+	<EnableCompressionInSingleFile>true</EnableCompressionInSingleFile>
+	<DebugType>none</DebugType>
+	<ApplicationManifest>app.manifest</ApplicationManifest>
+  </PropertyGroup>
+
+  <ItemGroup>
+	<PackageReference Include="System.Management" Version="8.0.0" />
+  </ItemGroup>
+
+</Project>