chore: import upstream snapshot with attribution

examples/integrations/ms-agent-framework-dotnet/scripts/setup-agent.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Navigate to the agent directory
+cd "$(dirname "$0")/../agent" || exit 1
+
+# Check if .NET is installed
+if ! command -v dotnet &> /dev/null; then
+    echo "❌ .NET SDK not found. Install from: https://dotnet.microsoft.com/download"
+    exit 1
+fi
+
+# Restore dependencies quietly
+echo "🔧 Setting up C# agent..."
+dotnet restore --verbosity quiet > /dev/null 2>&1
+
+if [ $? -eq 0 ]; then
+    echo "✅ Agent setup complete"
+else
+    echo "⚠️  Setup completed with warnings (agent should still work)"
+fi