sln build fix (again), tests fixes, audit work and doctors work

src/__Tests/Integration/StellaOps.Integration.E2E/ReachGraphE2ETests.cs

@@ -6,6 +6,7 @@ using System.Net.Http.Json;
 using Microsoft.AspNetCore.Mvc.Testing;
 using StellaOps.ReachGraph.Schema;
 using StellaOps.Scanner.CallGraph;
+using StellaOps.Scanner.Contracts;
 using StellaOps.Scanner.Reachability;
 using Xunit;
 

src/__Tests/Integration/StellaOps.Integration.E2E/StellaOps.Integration.E2E.csproj

@@ -16,6 +16,8 @@
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
+    <!-- Suppress xUnit1051: E2E integration tests don't need responsive cancellation -->
+    <NoWarn>$(NoWarn);xUnit1051</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>    <PackageReference Include="xunit.v3" />

src/__Tests/Integration/StellaOps.Integration.E2E/TASKS.md

@@ -1,7 +1,7 @@
 # StellaOps.Integration.E2E Task Board
 
 This board mirrors active sprint tasks for this module.
-Source of truth: `docs/implplan/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
+Source of truth: `docs-archived/implplan/2025-12-29-csproj-audit/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
 
 | Task ID | Status | Notes |
 | --- | --- | --- |