Hi, Wow. That's a lot of bugs in the list above, so I'm not expecting anything immediate.
This is probably just my ignorance, but what I'm trying to do is script some windows to tab together in the Desktop Shell Scripting Console. The code is below. 

I get this error: TypeError: cannot call tabBefore(): argument 1 has unknown type `Client*' (register the type with qScriptRegisterMetaType())

I've tried casting as 'Client & 'Client*', but the interpreter (I assume) is not interested. As far as I can tell, I can't register the type in the console, it has to be done when kwin is built. To that extent, I guess it's a bug. If this isn't the right place to ask this question, I'd appreciate some pointers to the right place.

Code:
var clients = workspace.clientList(); 
//tabBefore(Client*,bool)
for (var i=0; i<clients.length; i++) 	{
  if( clients[i].caption == "Positions (1)"){
	print ("client1"); var client1 = clients[i]; 		
    //print ( typeof clients[i]); print ( typeof client1)
  }
   if( clients[i].caption == "Journal.odt - LibreOffice Writer"){
	print ("client2"); var client2 = clients[i]; 		}
  }//end for
 
 client1.tabBefore(client2, true);

Reproducible: Always

Steps to Reproduce:
Run the above in Desktop Shell Scripting Console