fix(showcase): wire ms-agent-dotnet hitl suggestions + reconcile canonical e2e specs

Extracts the ms-agent-dotnet hitl demo's inline useConfigureSuggestions call
into a dedicated suggestions.ts that mirrors langgraph-python's canonical
hitl/suggestions.ts (identical pill titles and prompts), then wires the new
useHitlSuggestions() hook into hitl/page.tsx in place of the inline block.
This matches the gold-standard wiring shape the canonical D6 hitl assertions
expect.

Spec reconciliation: ms-agent-dotnet/tests/e2e/hitl.spec.ts and
interrupt-headless.spec.ts are not present in langgraph-python's canonical
suite, but both exercise MAF-specific behavior with no LGP equivalent
(plain /demos/hitl reject branch using the Simple plan pill; MAF's
frontend-tool adaptation of /demos/interrupt-headless). They are kept and
expected to not count toward the 185 LGP-parity floor.

Author: jpr5

showcase/integrations/ms-agent-dotnet/src/app/demos/hitl/page.tsx

@@ -5,9 +5,9 @@ import {
   CopilotKit,
   CopilotChat,
   useHumanInTheLoop,
-  useConfigureSuggestions,
 } from "@copilotkit/react-core/v2";
 import { z } from "zod";
+import { useHitlSuggestions } from "./suggestions";
 
 interface Step {
   description: string;
@@ -23,19 +23,7 @@ export default function HitlDemo() {
 }
 
 function DemoContent() {
-  useConfigureSuggestions({
-    suggestions: [
-      {
-        title: "Simple plan",
-        message: "Please plan a trip to mars in 5 steps.",
-      },
-      {
-        title: "Complex plan",
-        message: "Please plan a pasta dish in 10 steps.",
-      },
-    ],
-    available: "always",
-  });
+  useHitlSuggestions();
 
   // NB: dropped the `useLangGraphInterrupt({...})` registration here because
   // MS Agent Framework has no `interrupt()` primitive — the agent only ever

showcase/integrations/ms-agent-dotnet/src/app/demos/hitl/suggestions.ts

@@ -0,0 +1,19 @@
+"use client";
+
+import { useConfigureSuggestions } from "@copilotkit/react-core/v2";
+
+export function useHitlSuggestions() {
+  useConfigureSuggestions({
+    suggestions: [
+      {
+        title: "Simple plan",
+        message: "Please plan a trip to mars in 5 steps.",
+      },
+      {
+        title: "Complex plan",
+        message: "Please plan a pasta dish in 10 steps.",
+      },
+    ],
+    available: "always",
+  });
+}