Phase 0 completion: NT8 SDK core framework with risk management and position sizing

src/NT8.Adapters/Class1.cs.bak

@@ -0,0 +1 @@
+// Removed - replaced with PlaceholderAdapter.cs

src/NT8.Adapters/NT8.Adapters.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net48</TargetFramework>
+    <RootNamespace>NT8.Adapters</RootNamespace>
+    <AssemblyName>NT8.Adapters</AssemblyName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\NT8.Core\NT8.Core.csproj" />
+  </ItemGroup>
+
+</Project>

src/NT8.Adapters/PlaceholderAdapter.cs

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+// Placeholder file for NT8.Adapters project
+// This will contain NinjaTrader 8 integration adapters in Phase 1
+
+using System;
+
+namespace NT8.Adapters
+{
+    /// <summary>
+    /// Placeholder class to make project compile
+    /// Will be removed when actual NT8 adapters are implemented
+    /// </summary>
+    internal class PlaceholderAdapter
+    {
+        // Intentionally empty - just for compilation
+    }
+}