Hide unwired question cancel action

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/IssueThreadInteractionCard.test.tsx

@@ -91,6 +91,25 @@ describe("IssueThreadInteractionCard", () => {
     expect(host.querySelectorAll('[role="checkbox"]')).toHaveLength(3);
   });
 
+  it("only shows question cancellation when a cancel handler is wired", () => {
+    const withoutHandler = renderCard({
+      interaction: pendingAskUserQuestionsInteraction,
+      onSubmitInteractionAnswers: vi.fn(),
+    });
+    expect(withoutHandler.textContent).not.toContain("Cancel question");
+
+    act(() => root?.unmount());
+    withoutHandler.remove();
+    root = null;
+
+    const withHandler = renderCard({
+      interaction: pendingAskUserQuestionsInteraction,
+      onCancelInteraction: vi.fn(),
+      onSubmitInteractionAnswers: vi.fn(),
+    });
+    expect(withHandler.textContent).toContain("Cancel question");
+  });
+
   it("makes child tasks explicit in suggested task trees", () => {
     const host = renderCard({
       interaction: pendingSuggestedTasksInteraction,

ui/src/components/IssueThreadInteractionCard.tsx

@@ -792,21 +792,23 @@ function AskUserQuestionsCard({
               Submit once after you finish the full form.
             </div>
             <div className="flex flex-wrap items-center gap-2">
-              <Button
-                size="sm"
-                variant="outline"
-                disabled={!onCancelInteraction || working || cancelling}
-                onClick={() => void handleCancel()}
-              >
-                {cancelling ? (
-                  <>
-                    <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />
-                    Cancelling...
-                  </>
-                ) : (
-                  "Cancel question"
-                )}
-              </Button>
+              {onCancelInteraction ? (
+                <Button
+                  size="sm"
+                  variant="outline"
+                  disabled={working || cancelling}
+                  onClick={() => void handleCancel()}
+                >
+                  {cancelling ? (
+                    <>
+                      <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />
+                      Cancelling...
+                    </>
+                  ) : (
+                    "Cancel question"
+                  )}
+                </Button>
+              ) : null}
               <Button
                 size="sm"
                 disabled={!onSubmitInteractionAnswers || !canSubmit || working || cancelling}