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

src/NT8.Strategies/Class1.cs

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

src/NT8.Strategies/NT8.Strategies.csproj

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

src/NT8.Strategies/PlaceholderStrategy.cs

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