SMSG_EQUIPMENT_SET_SAVED now updates the local set's GUID from the
server response, preventing duplicate set creation when clicking
"Update" on a newly-saved set. New sets are also added to the local
list immediately so the UI reflects them without a relog.
Additionally, CMSG_PLAYED_TIME is now auto-sent on initial world entry
(with sendToChat=false) so the character Stats tab shows total and
level time immediately without requiring /played.