fix: include CoA custom classes in portrait/totems/raid-grouping

portrait.lua: guard CLASS_ICON_TCOORDS[classToken] lookup. CoA custom
classes (Witchdoctor, Templar, …) have no entry in the vanilla
CLASS_ICON_TCOORDS table, so the old SetTexCoord call crashed with a
nil-index whenever a custom-class unit was shown. Cache the lookup
into a local and fall through to blank texture on miss.

totems.lua: file-level class gate registered the totem bar only for
SHAMAN (and a 1-slot DK guardian variant), locking out Witchdoctor and
any future CoA totem class. Probe MAX_TOTEMS > 1 / HasMultiCastActionBar
(Bartender's pattern) and register without a class filter when the
player has the multi-cast totem bar, so any CoA totem class picks it up.

units.lua: raid-header groupingOrder was the hardcoded 10-class vanilla
string, which dumped the 11 CoA custom classes into an unsorted tail
when GROUP BY CLASS was active. Build the order dynamically from
RAID_CLASS_COLORS (CoA populates this with all 21 classes via the
CUSTOM_CLASS_COLORS mechanism) at the call site.

ShadowedUnitFrames/modules/portrait.lua

@@ -70,10 +70,12 @@ function Portrait:Update(frame, event)
 	-- Use class thingy
 	if( type == "class" ) then
 		local classToken = select(2, UnitClass(frame.unitOwner))
-		if( classToken ) then
+		local coords = classToken and CLASS_ICON_TCOORDS[classToken]
+		if( coords ) then
 			frame.portrait:SetTexture("Interface\\Glues\\CharacterCreate\\UI-CharacterCreate-Classes")
-			frame.portrait:SetTexCoord(CLASS_ICON_TCOORDS[classToken][1], CLASS_ICON_TCOORDS[classToken][2], CLASS_ICON_TCOORDS[classToken][3], CLASS_ICON_TCOORDS[classToken][4])
+			frame.portrait:SetTexCoord(coords[1], coords[2], coords[3], coords[4])
 		else
+			-- CoA custom classes (Witchdoctor/Templar/…) have no CLASS_ICON_TCOORDS entry; blank instead of crash
 			frame.portrait:SetTexture("")
 		end
 	-- Use 2D character image

ShadowedUnitFrames/modules/totems.lua

@@ -3,11 +3,23 @@ local totemColors = {}
 local MAX_TOTEMS = MAX_TOTEMS
 
 -- Death Knights untalented ghouls are guardians and are considered totems........... so set it up for them
-if( select(2, UnitClass("player")) == "DEATHKNIGHT" ) then
+local playerClass = select(2, UnitClass("player"))
+if( playerClass == "DEATHKNIGHT" ) then
 	MAX_TOTEMS = 1
 	ShadowUF:RegisterModule(Totems, "totemBar", ShadowUF.L["Guardian bar"], true, "DEATHKNIGHT")
 else
-	ShadowUF:RegisterModule(Totems, "totemBar", ShadowUF.L["Totem bar"], true, "SHAMAN")
+	-- CoA: SHAMAN is the vanilla totem class, but CoA custom classes (Witchdoctor, …) also use the
+	-- multi-cast totem bar. Detect via MAX_TOTEMS > 1 (set by FrameXML for totem classes) or the
+	-- HasMultiCastActionBar API (Bartender uses the same probe). Register with class=nil so the
+	-- module is available to any CoA totem class, not just SHAMAN.
+	local hasTotems = (MAX_TOTEMS and MAX_TOTEMS > 1)
+		or (type(HasMultiCastActionBar) == "function" and HasMultiCastActionBar())
+		or playerClass == "SHAMAN"
+	if( hasTotems ) then
+		ShadowUF:RegisterModule(Totems, "totemBar", ShadowUF.L["Totem bar"], true)
+	else
+		ShadowUF:RegisterModule(Totems, "totemBar", ShadowUF.L["Totem bar"], true, "SHAMAN")
+	end
 end
 
 function Totems:OnEnable(frame)

ShadowedUnitFrames/modules/units.lua

@@ -753,7 +753,15 @@ function Units:SetHeaderAttributes(frame, type)
 		frame:SetAttribute("groupFilter", filter or "1,2,3,4,5,6,7,8")
 		
 		if( config.groupBy == "CLASS" ) then
-			frame:SetAttribute("groupingOrder", "DEATHKNIGHT,DRUID,HUNTER,MAGE,PALADIN,PRIEST,ROGUE,SHAMAN,WARLOCK,WARRIOR")
+			-- CoA: build groupingOrder dynamically from RAID_CLASS_COLORS so all 21 CoA custom
+			-- classes (populated via CUSTOM_CLASS_COLORS) are included. Hardcoding the 10
+			-- vanilla classes silently drops Witchdoctor/Templar/… into an unsorted tail.
+			local orderedClasses = {}
+			for classToken in pairs(RAID_CLASS_COLORS) do
+				table.insert(orderedClasses, classToken)
+			end
+			table.sort(orderedClasses)
+			frame:SetAttribute("groupingOrder", table.concat(orderedClasses, ","))
 			frame:SetAttribute("groupBy", "CLASS")
 		else
 			frame:SetAttribute("groupingOrder", "1,2,3,4,5,6,7,8")