Get comprehensive XP balance information for the authenticated user
Get the user's current XP balance, available balance for transfers, and pending XP in claimed but unsettled offers
Response
XP balance information retrieved successfully
available_balance
Available XP for transfers (current - pending outgoing)
current_balance
Current XP balance from leaderboard
pending_incoming_xp
XP in claimed but unsettled offers as taker
pending_outgoing_xp
XP in claimed but unsettled offers as maker