__Problem__: `window.jamClient = jamClient;` was polluting the global scope, preventing garbage collection of the jamClient object and creating potential memory leaks.

__Solution__: Removed the global assignment entirely since:

- The `jamClient` is already available through `JamServerContext`
- No usage of `window.jamClient` was found in the codebase
- The comment mentioned "iframe access" but this can be handled through proper React patterns if needed

jam-ui/src/components/client/JKSessionScreen.js

@@ -155,9 +155,6 @@ const JKSessionScreen = () => {
     if (!isConnected || !jamClient) return;
     console.debug("JKSessionScreen: -DEBUG- isConnected changed to true");
 
-    // Make jamClient available globally for iframe access
-    window.jamClient = jamClient;
-
     guardOnJoinSession();
   }, [isConnected, jamClient]); // Added jamClient to dependencies for stability