fixed castbar for channeling units

libs/libdebuff.lua

@@ -1200,7 +1200,9 @@ if hasNampower then
       local itemId = arg1
       local spellId = arg2
       local casterGuid = arg3
-      local castTime = arg6
+      local spellType = arg8 or 0  -- 0=Normal, 1=Channel, 2=Autorepeating
+      local isChannel = spellType == 1
+      local castTime = isChannel and arg7 or arg6  -- arg6=castTime (normal), arg7=duration (channel)
       
       if not casterGuid or not spellId then return end
       
@@ -1244,7 +1246,7 @@ if hasNampower then
         startTime = GetTime(),
         duration = castTime and castTime / 1000 or 0,
         endTime = castTime and (GetTime() + castTime / 1000) or nil,
-        event = "START"
+        event = isChannel and "CHANNEL" or "START"
       }
 
       if event == "SPELL_START_SELF" and pfUI.libdebuff_spell_start_self_hooks then
@@ -1267,8 +1269,9 @@ if hasNampower then
       
       -- Clear cast bar only if SPELL_GO matches the active cast
       -- (Reactive procs like Frost Armor trigger SPELL_GO but shouldn't clear the castbar)
+      -- Don't clear channels on SPELL_GO - channels persist until duration expires or SPELL_FAILED
       if casterGuid and pfUI.libdebuff_casts[casterGuid] then
-        if pfUI.libdebuff_casts[casterGuid].spellID == spellId then
+        if pfUI.libdebuff_casts[casterGuid].spellID == spellId and pfUI.libdebuff_casts[casterGuid].event ~= "CHANNEL" then
           pfUI.libdebuff_casts[casterGuid] = nil
         end
       end

modules/castbar.lua

@@ -120,12 +120,15 @@ pfUI:RegisterModule("castbar", "vanilla", function ()
         if castData.event == "CAST" or castData.event == "FAIL" then
           castBlocked = true
           pfUI.libdebuff_casts[focusGuid] = nil
-        elseif castData.event == "START" and castData.endTime and castData.endTime > GetTime() then
+        elseif (castData.event == "START" or castData.event == "CHANNEL") and castData.endTime and castData.endTime > GetTime() then
           cast = castData.spellName
           texture = castData.icon
           startTime = castData.startTime * 1000
           endTime = castData.endTime * 1000
           nameSubtext = ""
+          if castData.event == "CHANNEL" then
+            channel = cast
+          end
         end
       end
 

modules/nameplates.lua

@@ -1579,8 +1579,17 @@ nameplates:RegisterEvent("ZONE_CHANGED_NEW_AREA")
         local channel, cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill
 
         if targetGUID then
-          -- We have a GUID = Nampower is authority, no cast means no cast
-          nameplate.castbar:Hide()
+          -- We have a GUID but Nampower has no cast info.
+          -- Fall back to API for the target plate (channels may not be in cast cache)
+          if isTargetPlate and UnitExists("target") then
+            cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitCastingInfo("target")
+            if not cast then
+              channel, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitChannelInfo("target")
+            end
+          end
+          if not cast and not channel then
+            nameplate.castbar:Hide()
+          end
         elseif isTargetPlate and UnitExists("target") then
           cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitCastingInfo("target")
           if not cast then