fix: WotLKDB plugin stats + kill tracking improvements

QuestieInit:LoadBaseDB:
- Count WotLKDB records BEFORE clearing globals
- Store counts in QuestieX_WotLKDB_Counts global for Loader.lua to read

QuestieLearner:OnCombatLogEvent:
- Only record kill coords for NPCs already in QuestieDB (quest objectives)
  or that were explicitly cached via target/mouseover (known quest givers)
- Prevents every random mob kill from polluting the learner database

Modules/QuestieInit.lua

@@ -434,6 +434,13 @@ function QuestieInit:LoadDatabase(key)
 end
 
 function QuestieInit:LoadBaseDB()
+    local function _countTable(t)
+        if type(t) ~= "table" then return 0 end
+        local n = 0
+        for _ in pairs(t) do n = n + 1 end
+        return n
+    end
+
     local function _pullGlobal(dbKey, globalName)
         if type(_G[globalName]) == "table" then
             QuestieDB[dbKey] = _G[globalName]
@@ -442,6 +449,15 @@ function QuestieInit:LoadBaseDB()
         end
         return false
     end
+
+    -- Count BEFORE pulling so we have accurate numbers even after the globals are cleared
+    local _counts = {
+        QUEST  = _countTable(_G["QuestieX_WotLKDB_quest"]),
+        NPC    = _countTable(_G["QuestieX_WotLKDB_npc"]),
+        OBJECT = _countTable(_G["QuestieX_WotLKDB_object"]),
+        ITEM   = _countTable(_G["QuestieX_WotLKDB_item"]),
+    }
+
     local _pulled = {
         quest  = _pullGlobal("questData",  "QuestieX_WotLKDB_quest"),
         npc    = _pullGlobal("npcData",    "QuestieX_WotLKDB_npc"),
@@ -449,6 +465,10 @@ function QuestieInit:LoadBaseDB()
         item   = _pullGlobal("itemData",   "QuestieX_WotLKDB_item"),
     }
     Questie:Debug(Questie.DEBUG_DEVELOP, "[DBDiag] WotLKDB pull: quest=" .. tostring(_pulled.quest) .. " npc=" .. tostring(_pulled.npc) .. " obj=" .. tostring(_pulled.object) .. " item=" .. tostring(_pulled.item))
+
+    -- Persist counts so WotLKDB Loader.lua can populate plugin.stats after PLAYER_LOGIN
+    _G.QuestieX_WotLKDB_Counts = _counts
+
     QuestieInit:LoadDatabase("npcData")
     QuestieInit:LoadDatabase("objectData")
     QuestieInit:LoadDatabase("questData")

Modules/QuestieLearner.lua

@@ -743,6 +743,17 @@ end
 -- Combat log: kill tracking with GUID-keyed cache
 ------------------------------------------------------------------------
 
+-- Returns true if npcId is referenced in any active quest objective (monster kill type)
+local function IsQuestObjectiveNpc(npcId)
+    if not QuestieDB then return false end
+    -- Check if this NPC appears in DB as a quest NPC (spawns field [7] or quest objectives)
+    local dbNpc = QuestieDB.GetNPC and QuestieDB:GetNPC(npcId)
+    if dbNpc then return true end
+    -- Check npcDataOverrides (from learner or plugins)
+    if QuestieDB.npcDataOverrides and QuestieDB.npcDataOverrides[npcId] then return true end
+    return false
+end
+
 function QuestieLearner:OnCombatLogEvent(...)
     local args = { CombatLogGetCurrentEventInfo and CombatLogGetCurrentEventInfo() or ... }
     local event    = args[2]
@@ -762,16 +773,14 @@ function QuestieLearner:OnCombatLogEvent(...)
         end
     end
 
-    -- Fallback: hex-prefix scan for creatures not in cache
-    if not npcId and destGUID and string.sub(destGUID, 1, 2) == "0x" then
-        local prefix = string.upper(string.sub(destGUID, 3, 6))
-        if CREATURE_HEX_PREFIXES[prefix] then
-            -- We don't have the ID but we have a name; nothing useful to record
-        end
-    end
-
     if not npcId or npcId <= 0 then return end
 
+    -- Only record kill coordinates for NPCs that are known quest objective targets
+    -- (already in DB, or previously cached from quest interaction).
+    -- This avoids polluting the learner with every random mob kill.
+    local isCached = _Learner.guidNpcCache and _Learner.guidNpcCache[destGUID] ~= nil
+    if not isCached and not IsQuestObjectiveNpc(npcId) then return end
+
     -- TTL cleanup: drop entries older than 10 minutes
     if _Learner.guidNpcCache then
         local now = time()