Combos: cooldown labels on the skill bar, steps follow the arts' current levels

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tools/names.txt

@@ -252,3 +252,9 @@
 0x00553080 cEvent_UI::cEvent_UI             # (type, target, sender, a..f), ret 0x24
 0x00428700 cItemTypeTable::NameText         # (type), ret 4: text id of the type's name (+0x20)
 0x0054a8f0 cCreature::UseItem               # (id), ret 4: event 0x10 to the item, removes it if used up
+0x00581290 cCreatureArts::SetCombo            # (index, arts[4], levels[4], id), ret 0x10: fills a combo, computes its total
+0x005818e0 cCreatureArts::ComboChargeFraction # (index) -> charge / total, max 1
+0x00581920 cCreatureArts::IsComboReady        # (index): total <= charge
+0x005819a0 cCreatureArts::FindCombo           # (id) -> index, 4 if none
+0x00581410 cCreatureArts::ComboTooltip        # (index, text, mode)
+0x004d2970 FindComboDef                       # (0x200..0x204) -> 0x30-byte entry at 0x953348