Drop the test that only exercised std::mem::replace (the fix is the one line in as_guest)

crates/horizon-client/src/game/lan_actions.rs

@@ -3372,24 +3372,3 @@ fn swing_packet(id: i32, hand: Hand, animation: SwingAnimation) -> C {
         duration: animation.duration,
     })
 }
-
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn guest_selected_slot_restores_from_turn_updates() {
-        let mut host_selected = 0;
-        let mut guest_selected = 0;
-
-        // enter_guest: host's selected slot is saved, guest's is put in place.
-        let host_saved = std::mem::replace(&mut host_selected, guest_selected);
-        assert_eq!(host_selected, 0);
-
-        // Guest actions (like tryPickItem / pick_item) change the active slot.
-        host_selected = 3;
-
-        // leave_guest: guest's new slot is saved into the guest record, host's is restored.
-        guest_selected = std::mem::replace(&mut host_selected, host_saved);
-        assert_eq!(guest_selected, 3);
-        assert_eq!(host_selected, 0);
-    }
-}