sequenceDiagram participant B as Browser participant W as WiFi Network participant R as Robot (Pico W) B->>W: HTTP GET / (request root page) W->>R: Forward the request R->>R: Build HTML response R->>W: HTTP 200 OK + HTML page W->>B: Deliver response B->>B: Render the HTML control page B->>B: User clicks "Forward" button B->>W: HTTP POST /action?cmd=forward W->>R: Forward the POST R->>R: Parse cmd, call go_forward() R->>W: HTTP 200 OK (updated status page) W->>B: Deliver new page