feat(modules): add Broadcast Filter to hide Ascension Autobroadcast spam

New Chatter module registers a ChatFrame message filter that suppresses chat
lines matching a configurable list (default: 'Ascension Autobroadcast'). Matches
case-insensitively against the message body and every string arg, so it catches
the named-channel autobroadcast where the label is the channel name, not the
body. Editable list in the module's options; enabled by default.

Chatter/Localization/enUS.lua

@@ -4,6 +4,12 @@ local AceLocale = LibStub:GetLibrary("AceLocale-3.0")
 local L = AceLocale:NewLocale("Chatter", "enUS", true)
 if not L then return end
 
+-- ./Modules/BroadcastFilter.lua
+L["Broadcast Filter"] = true
+L["Hidden broadcasts"] = true
+L["Hides chat lines from broadcast channels or senders. One entry per line; matching is a case-insensitive substring against the message and its channel/sender."] = true
+L["Suppresses spammy server broadcasts such as the Ascension Autobroadcast Discord nag."] = true
+
 -- ./Chatter.lua
 L["Chatter"] = true
 L["Standalone Config"] = true

Chatter/Modules/BroadcastFilter.lua

@@ -0,0 +1,109 @@
+local mod = Chatter:NewModule("Broadcast Filter", "AceEvent-3.0")
+local L = LibStub("AceLocale-3.0"):GetLocale("Chatter")
+mod.modName = L["Broadcast Filter"]
+
+local ipairs = _G.ipairs
+local type = _G.type
+local select = _G.select
+local strlower = _G.string.lower
+local strfind = _G.string.find
+local gmatch = _G.string.gmatch
+local gsub = _G.string.gsub
+
+-- Events the autobroadcast can arrive on. It renders as "[Ascension Autobroadcast]: ..."
+-- which is a named channel, so CHAT_MSG_CHANNEL is the primary one; SYSTEM and
+-- RAID_WARNING are belt-and-suspenders for other server broadcast styles.
+local events = {
+	"CHAT_MSG_CHANNEL",
+	"CHAT_MSG_CHANNEL_NOTICE",
+	"CHAT_MSG_SYSTEM",
+	"CHAT_MSG_RAID_WARNING",
+}
+
+local defaults = {
+	profile = {
+		patterns = "Ascension Autobroadcast",
+	}
+}
+
+-- Lowercased, trimmed, non-empty lines from the user's textbox.
+local activePatterns = {}
+local function rebuild()
+	for i = #activePatterns, 1, -1 do activePatterns[i] = nil end
+	for line in gmatch(mod.db.profile.patterns or "", "[^\r\n]+") do
+		line = gsub(gsub(line, "^%s+", ""), "%s+$", "")
+		if line ~= "" then activePatterns[#activePatterns + 1] = strlower(line) end
+	end
+end
+
+-- Returns true to suppress. For a channel message the channel name ("Ascension
+-- Autobroadcast") is not in the body but in a later arg, so scan the body and
+-- every string vararg with a case-insensitive plain substring match.
+mod.filterFunc = function(frame, event, msg, ...)
+	local n = #activePatterns
+	if n == 0 then return false end
+
+	if msg and msg ~= "" then
+		local m = strlower(msg)
+		for i = 1, n do
+			if strfind(m, activePatterns[i], 1, true) then return true end
+		end
+	end
+
+	for i = 1, select("#", ...) do
+		local v = select(i, ...)
+		if type(v) == "string" and v ~= "" then
+			v = strlower(v)
+			for j = 1, n do
+				if strfind(v, activePatterns[j], 1, true) then return true end
+			end
+		end
+	end
+
+	return false
+end
+
+local options = {
+	desc = {
+		order = 1,
+		type = "description",
+		name = L["Hides chat lines from broadcast channels or senders. One entry per line; matching is a case-insensitive substring against the message and its channel/sender."],
+	},
+	patterns = {
+		order = 2,
+		type = "input",
+		multiline = 8,
+		width = "full",
+		name = L["Hidden broadcasts"],
+		get = function() return mod.db.profile.patterns end,
+		set = function(info, v)
+			mod.db.profile.patterns = v
+			rebuild()
+		end,
+	},
+}
+
+function mod:OnInitialize()
+	self.db = Chatter.db:RegisterNamespace("BroadcastFilter", defaults)
+end
+
+function mod:OnEnable()
+	rebuild()
+	for _, event in ipairs(events) do
+		ChatFrame_AddMessageEventFilter(event, self.filterFunc)
+	end
+end
+
+function mod:OnDisable()
+	for _, event in ipairs(events) do
+		ChatFrame_RemoveMessageEventFilter(event, self.filterFunc)
+	end
+end
+
+function mod:Info()
+	return L["Suppresses spammy server broadcasts such as the Ascension Autobroadcast Discord nag."]
+end
+
+function mod:GetOptions()
+	return options
+end

Chatter/modules.xml

@@ -7,6 +7,7 @@
 	<Script file="Modules\PlayerNames.lua" />
 	<Script file="Modules\StickyChannels.lua" />
 	<Script file="Modules\UrlCopy.lua" />
+	<Script file="Modules\BroadcastFilter.lua" />
 	<!-- <Script file="Modules\ChatLink.lua" /> //-->
 	<Script file="Modules\EditBox.lua" />
 	<Script file="Modules\ChatFont.lua" />