switch group-membership checks to IsInGroup / IsInRaid

ClassicAPI ships modern IsInGroup() / IsInRaid() backports — drop the
GetNumPartyMembers() > 0 and GetNumRaidMembers() > 0 idioms (and the
GetNumPartyMembers() > 0 or GetNumRaidMembers() > 0 conflation) for the
named-intent variants. UnitInRaid("player") → IsInRaid() at the same
sites.

api/unitframes.lua

@@ -305,12 +305,12 @@ function pfUI.uf:UpdateVisibility()
     local id = self.cache_raid
 
     -- always show self in raidframes
-    if not UnitInRaid("player") and GetNumPartyMembers() == 0 and C.unitframes.selfinraid == "1" and id == 1 then
+    if not IsInRaid() and IsInGroup() and C.unitframes.selfinraid == "1" and id == 1 then
       self.id = ""
       self.label = "player"
 
     -- use raidframes for groups
-    elseif not UnitInRaid("player") and GetNumPartyMembers() > 0 and C.unitframes.raidforgroup == "1" then
+    elseif not IsInRaid() and IsInGroup() and C.unitframes.raidforgroup == "1" then
       if id == 1 then
         self.id = ""
         self.label = "player"
@@ -347,12 +347,12 @@ function pfUI.uf:UpdateVisibility()
     -- frame shall not be visible
     visibility = "hide"
     self.visible = nil
-  elseif C["unitframes"]["group"]["hide_in_raid"] == "1" and self.label and strsub(self.label,0,5) == "party" and UnitInRaid("player") then
+  elseif C["unitframes"]["group"]["hide_in_raid"] == "1" and self.label and strsub(self.label,0,5) == "party" and IsInRaid() then
     -- hide group while in raid and option is set
     visibility = "hide"
     self.visible = nil
   elseif ( self.fname == "Group0" or self.fname == "PartyPet0" or self.fname == "Party0Target" )
-  and (GetNumPartyMembers() <= 0 or (C["unitframes"]["group"]["hide_in_raid"] == "1" and UnitInRaid("player"))) then
+  and (not IsInGroup() or (C["unitframes"]["group"]["hide_in_raid"] == "1" and IsInRaid())) then
      -- hide self in group if solo or hide in raid is set
      visibility = "hide"
      self.visible = nil
@@ -1773,7 +1773,7 @@ function pfUI.uf:RefreshIndicators(unit)
   local unitstr = unit.label .. unit.id
 
   if unit.leaderIcon then -- Leader Icon
-    if unit.config.leadericon == "1" and UnitIsPartyLeader(unitstr) and ( GetNumPartyMembers() > 0 or GetNumRaidMembers() > 0 ) then
+    if unit.config.leadericon == "1" and UnitIsPartyLeader(unitstr) and IsInGroup() then
       unit.leaderIcon:Show()
     else
       unit.leaderIcon:Hide()

libs/libpredict.lua

@@ -366,9 +366,9 @@ pfUI.libdebuff_spell_go_hooks["libpredict"] = function(spellId, a1, a2, a3, a4,
       local rankStr = tostring(rank)
       if libpredict.sender and libpredict.sender.SendHealCommMsg then
         libpredict.sender:SendHealCommMsg(hotType .. "/" .. targetName .. "/" .. duration .. "/" .. rankStr .. "/")
-      elseif GetNumRaidMembers() > 0 then
+      elseif IsInRaid() then
         SendAddonMessage("HealComm", hotType .. "/" .. targetName .. "/" .. duration .. "/" .. rankStr .. "/", "RAID")
-      elseif GetNumPartyMembers() > 0 then
+      elseif IsInGroup() then
         SendAddonMessage("HealComm", hotType .. "/" .. targetName .. "/" .. duration .. "/" .. rankStr .. "/", "PARTY")
       end
     end
@@ -1083,10 +1083,10 @@ libpredict.sender = CreateFrame("Frame", "pfPredictionSender", UIParent)
 libpredict.sender.enabled = true
 libpredict.sender.SendHealCommMsg = function(self, msg)
   -- Smart channel selection: Only send to relevant channel to avoid duplicates
-  if GetNumRaidMembers() > 0 then
+  if IsInRaid() then
     -- In raid: Only send to RAID (includes all raid members)
     SendAddonMessage("HealComm", msg, "RAID")
-  elseif GetNumPartyMembers() > 0 then
+  elseif IsInGroup() then
     -- In party: Only send to PARTY
     SendAddonMessage("HealComm", msg, "PARTY")
   end
@@ -1095,10 +1095,10 @@ libpredict.sender.SendHealCommMsg = function(self, msg)
 end
 libpredict.sender.SendResCommMsg = function(self, msg)
   -- Smart channel selection: Only send to relevant channel to avoid duplicates
-  if GetNumRaidMembers() > 0 then
+  if IsInRaid() then
     -- In raid: Only send to RAID (includes all raid members)
     SendAddonMessage("CTRA", msg, "RAID")
-  elseif GetNumPartyMembers() > 0 then
+  elseif IsInGroup() then
     -- In party: Only send to PARTY
     SendAddonMessage("CTRA", msg, "PARTY")
   end

modules/innervatecall.lua

@@ -39,11 +39,11 @@ pfUI:RegisterModule("innervatecall", function ()
       return "BATTLEGROUND"
     end
 
-    if GetNumRaidMembers() > 0 then
+    if IsInRaid() then
       return "RAID"
     end
 
-    if GetNumPartyMembers() > 0 then
+    if IsInGroup() then
       return "PARTY"
     end
 

modules/mapcolors.lua

@@ -50,7 +50,7 @@ pfUI:RegisterModule("mapcolors", function ()
   end
 
   local function UpdateUnitFrames(unit_button_name)
-    if GetNumRaidMembers() > 0 then
+    if IsInRaid() then
       for i=1, MAX_RAID_MEMBERS do
         local frame_name = unit_button_name.."Raid"..i
         local frame = _G[frame_name]
@@ -68,7 +68,7 @@ pfUI:RegisterModule("mapcolors", function ()
           end
         end
       end
-    elseif GetNumPartyMembers() > 0 then
+    elseif IsInGroup() then
       for i=1, MAX_PARTY_MEMBERS do
         local frame_name = unit_button_name.."Party"..i
         local frame = _G[frame_name]