feat: add debuff visual indicators, overlays, and improve range checking logic

HealBot_Controller_Events.lua

@@ -172,6 +172,10 @@ function HealBot_OnUpdate(this, arg1)
     for unitID in pairs(powerToRefresh) do
         HealBot_Action_RefreshPower(unitID)
     end
+
+    if HealBot_Action_UpdateDebuffAnimation then
+        HealBot_Action_UpdateDebuffAnimation(arg1)
+    end
     -- Periodic resolution of units with missing class identity
     if HealBot_Model and HealBot_Model.unresolvedUnits and next(HealBot_Model.unresolvedUnits) then
         HealBot_UnresolvedTimer = (HealBot_UnresolvedTimer or 0) + arg1