Answer
A tree navigation URL follows the pattern tree/<treeclient>/<treeview> — tree is always the literal page-type prefix for tree URLs, and the <treeclient> and <treeview> values can be read directly off the target screen's own URL when you navigate to it normally (look for its treeclient= and treeview= parameters in the address bar) rather than needing a lookup table; taking those two parameter values from a real navigation to the tree-enabled screen and plugging them into the tree/<treeclient>/<treeview> pattern reliably reconstructs the correct Lobby navigation URL for that screen.