QA: Headless Chat (Complete) — PydanticAI

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)
• OPENAI_API_KEY set

Test Steps

1. Basic Functionality

• Navigate to /demos/headless-complete
• Verify the custom chat header "Headless Chat (Complete)" renders
• Verify the textarea input and Send button render
• Verify the empty-state hint is visible

2. Per-tool Renderers

• Click "Weather in Tokyo" suggestion. Verify a branded weather card renders inline in the assistant bubble with the temperature.
• Click "AAPL stock price" suggestion. Verify a branded stock card renders with ticker + price.
• Click "Highlight a note" suggestion. Verify a yellow highlight card renders in the chat (frontend-registered useComponent).

3. Streaming + Stop

• Send a message and verify the typing indicator shows while the agent is running
• While running, verify the Send button is replaced by a Stop button
• Click Stop mid-turn; verify the stream cancels

Known Limitations

• The "Sketch a diagram" / Excalidraw-via-MCP suggestion is intentionally absent in the PydanticAI port — the package does not wire MCP Apps on the backend today (see PARITY_NOTES.md).

Expected Results

• The fully headless chat (no <CopilotChat /> / <CopilotChatMessageView />) still renders per-tool renderers, frontend-registered components, and the default catch-all via useRenderToolCall.