Add security warning and browser launch instructions for WebGPU tutorial

Author: nikoscham

tutorials/heat-conduction-2d-fin-webgpu.html

@@ -89,6 +89,17 @@ <h1>Heat Conduction in a 2D Fin Tutorial (WebGPU)</h1>
         </p>
         <p>
             <strong>⚠️ Important:</strong> This feature is experimental and requires a browser that supports WebGPU.
+        <p>
+            Also, due to security restrictions, this example requires launching the
+            browser with reduced security settings, e.g.:
+        </p>
+        <pre style="background-color: #f8f9fa; padding: 8px; border-radius: 4px; overflow-x: auto">
+start chrome --disable-web-security --user-data-dir="C:\tmp\chrome-cors" --disable-site-isolation-trials</pre>
+        <p>
+            These flags temporarily disable CORS restrictions that normally block a web worker from loading
+            scripts or data when running from local files. For production applications, proper CORS headers should
+            be configured on your server.
+        </p>
         </p>
     </div>