feat: extract MyAgent core and web console

tests/MyAgent.Tests/Core/SubagentRegistryTests.cs

@@ -0,0 +1,18 @@
+using MyAgent.Core;
+using Xunit;
+
+namespace MyAgent.Tests.Core;
+
+public sealed class SubagentRegistryTests
+{
+    [Fact]
+    public void Registry_ContainsOnlyControlledRoles()
+    {
+        var registry = new SubagentRegistry();
+
+        Assert.Equal(["analyst", "memory-recall", "tool"], registry.List().Select(x => x.Id).ToArray());
+        Assert.False(registry.TryGet("System.IO.File", out _));
+        Assert.True(registry.TryGet("tool", out var tool));
+        Assert.Equal(4, tool.MaxInstancesPerPlan);
+    }
+}