Add optimized TokensWorth chat and loot modules

Add Block NPC Spam, World Chat Hider, and Loot Quality to Extras with shared chat filtering, event-driven loot quality handling, runtime safety fixes, and updated documentation/provenance.

mods/chat-npc-spam.lua

@@ -0,0 +1,92 @@
+-- Adapted from TokensWorth/ShaguTweaks-mods (MIT, original copyright GryllsAddons).
+
+local T = ShaguTweaks.T
+local Filter = ShaguTweaks.ExtrasChatFilter
+
+local module = ShaguTweaks:register({
+  title = T["Block NPC Spam"],
+  description = T["Blocks known repetitive NPC say/yell spam messages."],
+  expansions = { ["vanilla"] = true, ["tbc"] = nil },
+  category = T["Chat"],
+  enabled = nil,
+})
+
+local blockedEvents = {
+  ["CHAT_MSG_MONSTER_SAY"] = true,
+  ["CHAT_MSG_MONSTER_YELL"] = true,
+}
+
+local blockedNPCs = {}
+local npcNames = {
+  -- enUS
+  "Tansy Sparkpen",
+  "Fara Boltbreaker",
+  "Shellcoin Promoter",
+
+  -- ruRU
+  "Зазывала ярмарки Новолуния",
+  "Томас Миллер",
+  "Уильям",
+  "Донна",
+  "Жюстина Демалье",
+  "Мерлис Малаган",
+  "Лиана Пирс",
+  "Сюзанна",
+  "Джейни Аншип",
+}
+
+for _, name in pairs(npcNames) do
+  blockedNPCs[name] = true
+  blockedNPCs[string.lower(name)] = true
+end
+
+local blockedPhrases = {
+  { "shellcoin", "invest" },
+  { "shells", "trade" },
+  { "shells", "money" },
+}
+
+local function IsBlockedNPC(sender)
+  if not sender then return false end
+  return blockedNPCs[sender] or blockedNPCs[string.lower(sender)] or false
+end
+
+local function IsBlockedPhrase(message)
+  if not message then return false end
+
+  local normalized = string.lower(string.gsub(message, "[^A-Za-z0-9]", ""))
+
+  for _, phrase in pairs(blockedPhrases) do
+    local matched = true
+
+    for _, word in pairs(phrase) do
+      if not string.find(normalized, word, 1, true) then
+        matched = false
+        break
+      end
+    end
+
+    if matched then return true end
+  end
+
+  return false
+end
+
+local function FilterNPCSpam(event)
+  if not blockedEvents[event] then return false end
+  if not arg1 or not arg2 then return false end
+
+  return IsBlockedNPC(arg2) or IsBlockedPhrase(arg1)
+end
+
+module.enable = function(self)
+  if Filter then
+    Filter:Register("BlockNPCSpam", FilterNPCSpam)
+  end
+end
+
+module.disable = function(self)
+  if Filter then
+    Filter:Unregister("BlockNPCSpam")
+  end
+end