test(chat): scope completion assertions to the delegated task link

Assert the completion prefix and visible expected task link in the same message, including its exact destination, without relying on flat text across a status glyph.

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

tests/e2e/agent-chat-projects.spec.ts

@@ -467,7 +467,20 @@ test("plan approval hands the preserved revision to an assigned project task", a
     expect(task.parentId).toBeNull();
     expect(task.projectId).toBeTruthy();
     expect(task.assigneeAgentId).toBe(f.agent.id);
-    await expect(page.getByText(`Delegated work completed: ${task.identifier}`, { exact: true })).toBeVisible();
+    const completion = page.getByRole("region", { name: "Conversation messages" })
+      .locator("p")
+      .filter({ hasText: /^Delegated work completed:/ });
+    await expect(completion).toHaveCount(1);
+    const completedTask = completion.getByRole("link", {
+      name: `Issue ${task.identifier}: ${task.title}`,
+      exact: true,
+    });
+    await expect(completedTask).toBeVisible();
+    await expect(completedTask).toContainText(task.identifier);
+    await expect(completedTask).toHaveAttribute(
+      "href",
+      `/${f.company.issuePrefix}/issues/${task.identifier}`,
+    );
     const plan = await json(
       await request.get(`/api/issues/${task.id}/documents/plan`),
     );