QA: Agentic Chat (Reasoning) — CrewAI (Crews)

• Navigate to /demos/agentic-chat-reasoning.
• Send a complex prompt (e.g. "Walk me through how you'd plan a 3-city trip next month").
• Verify the custom ReasoningBlock card (data-testid="reasoning-block") appears above the final answer with the "Reasoning" badge.
• Verify when streaming, the label shows "Thinking...".
• Verify the final assistant text appears after reasoning.