Add assistant-ui data agent frontend

frontend/app/README.md

@@ -1,21 +1,27 @@
-# Claw Code Agent Frontend
+This frontend is based on the official [assistant-ui](https://github.com/assistant-ui/assistant-ui) starter project.
 
-This frontend is based on the MIT-licensed `langchain-ai/agent-chat-ui` project and will be adapted into the Claw Code Agent data workbench.
+The current goal is to keep the upstream assistant-ui visual structure intact, then add Claw Code Agent backend adapters in small, reviewable steps.
 
-Current scope:
+## Getting Started
 
-- Keep the upstream chat UI foundation.
-- Preserve the artifact side-panel pattern for review and dataset outputs.
-- Replace the LangGraph client integration with Claw Code Agent FastAPI endpoints in later steps.
+First, add your OpenAI API key to `.env.local` file:
 
-Upstream license attribution is kept in `LICENSE.agent-chat-ui`.
-
-## Development
-
-```bash
-corepack enable
-pnpm install
-pnpm dev
+```
+OPENAI_API_KEY=sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 ```
 
-The default Next.js dev server runs on `http://localhost:3000`.
+Then, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.