Update UI README

Author: shuds13

agentic/web_ui/README.md

@@ -10,10 +10,15 @@ Install the required dependencies:
 pip install fastapi uvicorn[standard] gradio websockets
 ```
 
+This is in addition to any dependencies required for running the scripts.
+
 ## Usage
 
 ### Quick Start
 
+The following assumes an API KEY is set in the environment. The interface
+will pick up available models.
+
 Start the gradio web server (from web_ui dir):
 
 ```bash
@@ -29,6 +34,8 @@ Click on the URL shown in the terminal to open the web interface.
 3. **Click Run**: The agent will execute and output will appear in real-time
 4. **View Generated Scripts**: Generated scripts will appear in the dropdown and can be viewed
 
+For interactive scripts, you can enter prompts when the agent needs user input.
+
 ## Directory Structure
 
 - `app.py` - FastAPI WebSocket server backend