unit: add UnitSpellHaste(unit) -- backport of the TBC+ haste getter

Vanilla 1.12 has no spell-haste API. UnitSpellHaste reads UNIT_MOD_CAST_SPEED (the cast-time multiplier at descriptor +0x22c that the server folds into SpellEntry::GetCastTime) and converts it to the modern haste percentage: haste% = (1 / modCastSpeed - 1) * 100 so 1.0 -> 0, 0.5 (half cast time) -> 100, and a slow like Curse of Tongues (>1.0) -> negative. This is the Blizzard-shaped surface over the same field nampower exposes raw as GetUnitField(unit, "modCastSpeed"), letting addons drop that dependency (raw multiplier recoverable as 1/(1 + haste/100)). Formula verified byte-exact against 4.3.4's Script_UnitSpellHaste (FUN_004555b0): `(C1 / mult) * C2 - C2` with C1=1.0, C2=100.0 and a div-by-zero guard -- the constants are forced by "unhasted must read 0" and "return a percentage". The 4.3.4 field lives at desc+0x10c; +0x22c is the verified 1.12 offset. Our div-guard uses `> 0` vs retail's `!= 0` (identical for the always-positive cast-speed field, marginally more defensive). New src/unit/SpellHaste.cpp + OFF_UNIT_MOD_CAST_SPEED; docs + README updated.
unit: add the unmodified arg to UnitPower / UnitPowerMax
2026-11-12 04:47:37 +00:00 · 2026-07-25 00:27:17 -05:00 · 2026-07-25 00:10:09 -05:00 · 2026-07-25 00:04:16 -05:00 · 2026-07-24 23:58:46 -05:00 · 2026-07-24 23:21:26 -05:00
33 changed files with 2603 additions and 292 deletions
@@ -38,4 +38,8 @@ if C_AddOns.DoesAddOnExist('pfUI') then
            end)
        end
    end)
-end
+end
+
+if C_AddOns.DoesAddOnExist("SpecialTalentUI") then
+    EventUtil.ContinueOnAddOnLoaded("SpecialTalentUI", CAPI_ApplyStandardColorGlobals)
+end
@@ -108,11 +108,14 @@ for _, v in pairs(ITEM_QUALITY_COLORS) do
    v.color = CreateColor(v.r, v.g, v.b, 1)
 end

-do
+function CAPI_ApplyStandardColorGlobals()
    local envTbl = _G
    for _, dbColor in ipairs(C_UIColor.GetColors()) do
-        local color = CreateColor(dbColor.color.r, dbColor.color.g, dbColor.color.b, dbColor.color.a)
-        envTbl[dbColor.baseTag] = color
-        envTbl[dbColor.baseTag.."_CODE"] = color:GenerateHexColorMarkup()
+        if not envTbl[dbColor.baseTag] or not envTbl[dbColor.baseTag].GetRGB then
+            local color = CreateColor(dbColor.color.r, dbColor.color.g, dbColor.color.b, dbColor.color.a)
+            envTbl[dbColor.baseTag] = color
+            envTbl[dbColor.baseTag.."_CODE"] = color:GenerateHexColorMarkup()
+        end
    end
 end
+CAPI_ApplyStandardColorGlobals()
@@ -248,7 +248,7 @@ end
 local function CreateFrame_TradeSkillLink()
 	local f = CreateFrame("Frame", "ClassicAPITradeSkillLinkFrame", UIParent);
 	f:SetSize(FRAME_W, FRAME_H);
-	f:SetPoint("CENTER", 0, 0);
+	f:SetPoint("CENTER");
 	f:SetMovable(true);
 	f:EnableMouse(true);
 	f:SetHitRectInsets(LO.hit[1], LO.hit[2], LO.hit[3], LO.hit[4]);
@@ -259,6 +259,9 @@ local function CreateFrame_TradeSkillLink()
 	f:Hide();
 	tinsert(UISpecialFrames, f:GetName())

+	f:SetScript("OnShow", function() PlaySound("igCharacterInfoOpen"); end);
+	f:SetScript("OnHide", function() PlaySound("igCharacterInfoClose"); end);
+
 	local portrait = f:CreateTexture(nil, "BACKGROUND");
 	portrait:SetSize(60, 60);
 	portrait:SetPoint("TOPLEFT", 7, -6);
@@ -296,7 +299,7 @@ local function CreateFrame_TradeSkillLink()
 	local exit = CreateFrame("Button", nil, f, "UIPanelButtonTemplate");
 	exit:SetSize(80, 22);
 	exit:SetPoint(LO.exit[1], f, LO.exit[2], LO.exit[3], LO.exit[4]);
-	exit:SetText(EXIT or "Exit");
+	exit:SetText(EXIT);
 	exit:SetScript("OnClick", function() f:Hide(); end);

 	local bar = CreateFrame("StatusBar", nil, f);
@@ -393,29 +396,13 @@ local function CreateFrame_TradeSkillLink()
 		"ClassicAPITradeSkillLinkDetailScroll", f, DETAIL_SCROLL_TEMPLATE);
 	detailScroll:SetSize(LO.detail[3], LO.detail[4]);
 	detailScroll:SetPoint("TOPLEFT", LO.detail[1], LO.detail[2]);
-	detailScroll.scrollBarHideable = 1;  -- template sets this too; belt-and-suspenders
-	f.detailScroll = detailScroll;
-	-- Off until a recipe overflows the pane (toggled in RenderDetail).
-	-- The template shows its slider and enables the wheel by default; on
-	-- the roomy Turtle pane that leaves a dead scrollbar that still eats
-	-- wheel events and over-scrolls a hair. Start both disabled.
+	-- Bar visibility + wheel are driven per-render by SetDetailBarShown (from
+	-- the computed overflow). `scrollBarHideable` still lets the template's
+	-- ScrollFrame_OnScrollRangeChanged manage the slider on range changes.
+	-- Start with the wheel off; the first RenderDetail/ClearDetail sets it.
+	detailScroll.scrollBarHideable = 1;
 	detailScroll:EnableMouseWheel(false);
-	local detailSB = getglobal("ClassicAPITradeSkillLinkDetailScrollScrollBar");
-	if detailSB then
-		detailSB:Hide();
-	end
-	-- The template re-shows its slider when the frame transitions to shown
-	-- (on first open, before the auto-selected recipe's RenderDetail runs),
-	-- leaving a dead scrollbar until the first click. Re-assert the hidden
-	-- state on show unless the current recipe genuinely overflows.
-	detailScroll:SetScript("OnShow", function()
-		f:UpdateDetailScrollbar();
-		RunNextFrame(function()
-			if f:IsShown() then
-				f:UpdateDetailScrollbar();
-			end
-		end);
-	end);
+	f.detailScroll = detailScroll;

 	local detailChild = CreateFrame("Frame",
 		"ClassicAPITradeSkillLinkDetailChild", detailScroll);
@@ -514,18 +501,20 @@ local function CreateFrame_TradeSkillLink()
 		return btn;
 	end

-	-- Show the detail slider + enable the wheel only when the current
-	-- recipe overflows the pane (tracked by `detailNeedScroll`).
-	function f:UpdateDetailScrollbar()
-		local need = self.detailNeedScroll and true or false;
-		self.detailScroll:EnableMouseWheel(need);
+	-- Show the detail bar/borders only when the content overflows the pane.
+	-- Driven by our own computed overflow, NOT the engine: scrollBarHideable's
+	-- auto-hide only fires on a range CHANGE (so content that fits from the
+	-- start never hides), and GetVerticalScrollRange isn't reliably readable
+	-- the same tick as UpdateScrollChildRect.
+	function f:SetDetailBarShown(show)
+		self.detailScroll:EnableMouseWheel(show);
 		local base = "ClassicAPITradeSkillLinkDetailScroll";
 		local sb = getglobal(base .. "ScrollBar");
-		if sb then sb:SetShown(need) end
+		if sb then sb:SetShown(show) end
 		local top = getglobal(base .. "Top");
-		if top then top:SetShown(need) end
+		if top then top:SetShown(show) end
 		local bottom = getglobal(base .. "Bottom");
-		if bottom then bottom:SetShown(need) end
+		if bottom then bottom:SetShown(show) end
 	end

 	function f:RenderDetail(entry)
@@ -571,19 +560,21 @@ local function CreateFrame_TradeSkillLink()
 		local total = table.getn(reagents);
 		for i = 1, total do
 			local btn = AcquireReagent(i);
-			local r = reagents[i];
-			local name, tex, link = itemInfo(r.itemID);
+			local reagent = reagents[i];
+			local name, tex, link = itemInfo(reagent.itemID);
 			btn:SetNormalTexture(tex or "Interface\\Icons\\INV_Misc_QuestionMark");
 			btn.itemLink = link;
-			btn.nameText:SetText(name or ("item:" .. r.itemID));
-			local need = r.count or 1;
-			local have = C_Item.GetItemCount(r.itemID) or 0;
+			btn.nameText:SetText(name or ("item:" .. reagent.itemID));
+			local need = reagent.count or 1;
+			local have = C_Item.GetItemCount(reagent.itemID) or 0;
 			if have >= need then
-				btn:GetNormalTexture():SetVertexColor(1, 1, 1);
-				btn.nameText:SetTextColor(HIGHLIGHT_FONT_COLOR:GetRGB());
+				local r, g, b = HIGHLIGHT_FONT_COLOR:GetRGB()
+				btn:GetNormalTexture():SetVertexColor(r, g, b);
+				btn.nameText:SetTextColor(r, g, b);
 			else
-				btn:GetNormalTexture():SetVertexColor(0.5, 0.5, 0.5);
-				btn.nameText:SetTextColor(GRAY_FONT_COLOR:GetRGB());
+				local r, g, b = GRAY_FONT_COLOR:GetRGB()
+				btn:GetNormalTexture():SetVertexColor(r, g, b);
+				btn.nameText:SetTextColor(r, g, b);
 			end
 			local haveText = (have >= 100) and "*" or tostring(have);
 			btn.count:SetText(haveText .. " /" .. need);
@@ -594,29 +585,32 @@ local function CreateFrame_TradeSkillLink()
 			self.reagents[i]:Hide();
 		end

-		-- Grow the scroll child to the content height so the pane scrolls
-		-- once the header + reagent rows exceed the visible area. Reagent
-		-- row 0 sits ~67px below the child top (icon + label); add the
-		-- wrapped description height for spell recipes.
-		local descH = (descText ~= "") and self.prodDesc:GetHeight() or 0;
-		local rows = math.ceil(total / 2);
-		local contentH = 67 + descH + rows * REAGENT_ROW_HEIGHT + 8;
-		self.detailChild:SetHeight(math.max(contentH, LO.detail[4]));
-		-- Reset to the top and manage the slider explicitly: a range that
-		-- stays 0 (content fits, e.g. Turtle's roomy pane) never fires the
-		-- range-changed event that `scrollBarHideable` relies on, so the
-		-- slider would otherwise sit visible-but-useless. Show it only when
-		-- the content actually overflows.
-		self.detailNeedScroll = contentH > LO.detail[4];
+		local function applyContentHeight()
+			local contentH = LO.detail[4];
+			if total > 0 then
+				local childTop = self.detailChild:GetTop();
+				local lastBtn = self.reagents[total];
+				local lastBottom = lastBtn and lastBtn:GetBottom();
+				if childTop and lastBottom then
+					-- +22: ~12px name-plate overhang below the icon + ~10px pad.
+					contentH = (childTop - lastBottom) + 22;
+				end
+			end
+			self.detailChild:SetHeight(math.max(contentH, LO.detail[4]));
+			-- Recompute the scroll range from the child's new height, then
+			-- show the bar only if the content actually overflows the pane.
+			self.detailScroll:UpdateScrollChildRect();
+			self:SetDetailBarShown(contentH > LO.detail[4] + 0.5);
+		end
+		applyContentHeight();
 		local sb = getglobal("ClassicAPITradeSkillLinkDetailScrollScrollBar");
 		if sb then
 			sb:SetValue(0);
 		end
 		self.detailScroll:SetVerticalScroll(0);
-		self:UpdateDetailScrollbar();
 		RunNextFrame(function()
-			if self:IsShown() then
-				self:UpdateDetailScrollbar();
+			if self:IsShown() and self.selectedSpellID == entry.spellID then
+				applyContentHeight();
 			end
 		end)
 	end
@@ -639,8 +633,8 @@ local function CreateFrame_TradeSkillLink()
 			self.reagents[i]:Hide();
 		end
 		self.detailChild:SetHeight(LO.detail[4]);
-		self.detailNeedScroll = false;
-		self:UpdateDetailScrollbar();
+		self.detailScroll:UpdateScrollChildRect();
+		self:SetDetailBarShown(false);
 		self.detailScroll:SetVerticalScroll(0);
 	end

@@ -21,6 +21,7 @@ Full per-function reference: **[docs/API.md](docs/API.md)**.
 | [AddOns](docs/API.md#addons) | `C_AddOns.DoesAddOnExist`, `C_AddOns.GetAddOnName`, `C_AddOns.GetAddOnNotes`, `C_AddOns.GetAddOnOptionalDependencies`, `C_AddOns.GetAddOnSecurity`, `C_AddOns.GetAddOnTitle`, `C_AddOns.IsAddOnLoadable`, `C_AddOns.IsAddOnLoaded` |
 | [AuctionHouse](docs/API.md#auctionhouse) | `C_AuctionHouse.PostItem` |
 | [Chat](docs/API.md#chat) | `GetCurrentChatGUID` |
+| [ChatBubbles](docs/API.md#chatbubbles) | `C_ChatBubbles.GetAllChatBubbles` |
 | [Class](docs/API.md#class) | `FillLocalizedClassList` |
 | [Combat](docs/API.md#combat) | `InCombatLockdown` |
 | [CVar](docs/API.md#cvar) | `C_CVar.GetCVarBool` |
@@ -29,7 +30,7 @@ Full per-function reference: **[docs/API.md](docs/API.md)**.
 | [Creature](docs/API.md#creature) | `C_CreatureInfo.GetCreatureID`, `C_CreatureInfo.GetCreatureInfoByID`, `C_CreatureInfo.RequestLoadCreatureByID`, `C_CreatureInfo.GetRaceInfo`, `C_CreatureInfo.GetClassInfo`, `C_CreatureInfo.GetCreatureFamilyInfo`, `C_CreatureInfo.GetCreatureFamilyIDs`, `C_CreatureInfo.GetFactionInfo`, `C_CreatureInfo.GetCreatureTypeInfo`, `C_CreatureInfo.GetCreatureTypeIDs` |
 | EncodingUtil | `C_EncodingUtil.CompressString`, `C_EncodingUtil.DecompressString`, `C_EncodingUtil.EncodeBase64`, `C_EncodingUtil.DecodeBase64`, `C_EncodingUtil.EncodeHex`, `C_EncodingUtil.DecodeHex`, `C_EncodingUtil.SerializeJSON`, `C_EncodingUtil.DeserializeJSON`, `C_EncodingUtil.SerializeCBOR`, `C_EncodingUtil.DeserializeCBOR` |
 | [EquipmentSet](docs/API.md#equipmentset) | `C_EquipmentSet.CanUseEquipmentSets`, `C_EquipmentSet.ClearIgnoredSlotsForSave`, `C_EquipmentSet.CreateEquipmentSet`, `C_EquipmentSet.DeleteEquipmentSet`, `C_EquipmentSet.EquipmentSetContainsLockedItems`, `C_EquipmentSet.GetEquipmentSetID`, `C_EquipmentSet.GetEquipmentSetIDs`, `C_EquipmentSet.GetEquipmentSetInfo`, `C_EquipmentSet.GetIgnoredSlots`, `C_EquipmentSet.GetItemIDs`, `C_EquipmentSet.GetItemLocations`, `C_EquipmentSet.GetNumEquipmentSets`, `C_EquipmentSet.IgnoreSlotForSave`, `C_EquipmentSet.IsSlotIgnoredForSave`, `C_EquipmentSet.ModifyEquipmentSet`, `C_EquipmentSet.SaveEquipmentSet`, `C_EquipmentSet.UnignoreSlotForSave`, `C_EquipmentSet.UseEquipmentSet` |
-| [Events](docs/API.md#events) | `C_EventUtils.IsEventValid` |
+| [Events](docs/API.md#events) | `C_EventUtils.IsEventValid`, `GetFramesRegisteredForEvent` |
 | [Expansion](docs/API.md#expansion) | `ClassicExpansionAtLeast`, `ClassicExpansionAtMost`, `GetClassicExpansionLevel` |
 | [Faction](docs/API.md#faction) | `C_Reputation.GetFactionDataByIndex`, `C_Reputation.GetFactionStandings`, `C_Reputation.GetLastStandingChange`, `C_Reputation.GetWatchedFactionData`, `C_Reputation.SetWatchedFactionByID`, `GetFactionIDByIndex`, `GetFactionInfoByID`, `GetFactionParentID` |
 | [Focus](docs/API.md#focus) | `ClearFocus`, `FocusUnit` |
@@ -37,7 +38,7 @@ Full per-function reference: **[docs/API.md](docs/API.md)**.
 | [FriendList](docs/API.md#friendlist) | `C_FriendList.IsWhoQueryPending`, `C_FriendList.SendWhoQueryByName` |
 | [GameObject](docs/API.md#gameobject) | `C_GameObjectInfo.GetGameObjectInfoByID`, `C_GameObjectInfo.RequestLoadGameObjectByID`, `ClosestGameObjectPosition` |
 | [Gossip](docs/API.md#gossip) | `C_GossipInfo.CloseGossip`, `C_GossipInfo.GetActiveQuests`, `C_GossipInfo.GetAvailableQuests`, `C_GossipInfo.GetNumActiveQuests`, `C_GossipInfo.GetNumAvailableQuests`, `C_GossipInfo.GetNumOptions`, `C_GossipInfo.GetOptions`, `C_GossipInfo.GetText`, `C_GossipInfo.SelectActiveQuest`, `C_GossipInfo.SelectAvailableQuest`, `C_GossipInfo.SelectOption`, `C_GossipInfo.SelectOptionByIndex` |
-| [GameTooltip](docs/API.md#gametooltip) | `GameTooltip:GetGameObject`, `GameTooltip:GetItem`, `GameTooltip:GetOwner`, `GameTooltip:GetSpell`, `GameTooltip:GetUnitGUID`, `GameTooltip:HasGameObject`, `GameTooltip:HasItem`, `GameTooltip:HasSpell`, `GameTooltip:HasUnit`, `GameTooltip:IsEquippedItem`, `GameTooltip:SetEquipmentSet`, `GameTooltip:SetHyperlinkCompareItem`, `GameTooltip:SetInventoryItemByID`, `GameTooltip:SetItemByGUID`, `GameTooltip:SetItemByID`, `GameTooltip:SetSpellByID`, `GameTooltip:SetTalentByID`, `GameTooltip:SetUnitAura`, `OnTooltipSetItem` (script) |
+| [GameTooltip](docs/API.md#gametooltip) | `GameTooltip:AddSpellByID`, `GameTooltip:GetGameObject`, `GameTooltip:GetItem`, `GameTooltip:GetOwner`, `GameTooltip:GetSpell`, `GameTooltip:GetUnitGUID`, `GameTooltip:HasGameObject`, `GameTooltip:HasItem`, `GameTooltip:HasSpell`, `GameTooltip:HasUnit`, `GameTooltip:IsEquippedItem`, `GameTooltip:SetEquipmentSet`, `GameTooltip:SetHyperlinkCompareItem`, `GameTooltip:SetInventoryItemByID`, `GameTooltip:SetItemByGUID`, `GameTooltip:SetItemByID`, `GameTooltip:SetSpellByID`, `GameTooltip:SetTalentByID`, `GameTooltip:SetTotem`, `GameTooltip:SetUnitAura`, `OnTooltipSetItem` (script) |
 | [Hooks](docs/API.md#hooks) | `hooksecurefunc` |
 | [Input](docs/API.md#input) | `GetMouseButtonClicked`, `IsLeftAltKeyDown`, `IsLeftControlKeyDown`, `IsLeftShiftKeyDown`, `IsModifierKeyDown`, `IsMouseButtonDown`, `IsRightAltKeyDown`, `IsRightControlKeyDown`, `IsRightShiftKeyDown` |
 | [Instance](docs/API.md#instance) | `GetInstanceInfo` |
@@ -61,12 +62,13 @@ Full per-function reference: **[docs/API.md](docs/API.md)**.
 | [SpellBook](docs/API.md#spellbook) | `C_SpellBook.GetCurrentLevelSpells`, `C_SpellBook.GetSkillLineName`, `C_SpellBook.GetSkillLineRank`, `C_SpellBook.GetSpellLevelLearned`, `C_SpellBook.GetSpellSkillLine`, `C_SpellBook.IsAutoAttackSpellBookItem`, `C_SpellBook.IsRangedAutoAttackSpellBookItem`, `FindSpellBookSlotByID` |
 | [State](docs/API.md#state) | `CancelShapeshiftForm`, `Dismount`, `GetMirrorTimerInfo`, `GetMirrorTimerProgress`, `GetShapeshiftFormID`, `IsAssistingRitual`, `IsFalling`, `IsInGroup`, `IsInRaid`, `IsLoggedIn`, `IsMounted`, `IsStealthed`, `IsSwimming` |
 | [Talent](docs/API.md#talent) | `GetTalentIDByIndex`, `GetTalentSpellID` |
-| [TaxiMap](docs/API.md#taximap) | `C_TaxiMap.GetTaxiNodesForMap`, `C_TaxiMap.GetAllTaxiNodes` |
+| [Targeting](docs/API.md#targeting) | `GetPlayerFacing`, `TargetDirectionEnemy`, `TargetDirectionFriend`, `TargetNearest`, `TargetNearestEnemyPlayer`, `TargetNearestFriendPlayer` |
+| [TaxiMap](docs/API.md#taximap) | `C_TaxiMap.GetTaxiNodesForMap`, `C_TaxiMap.GetAllTaxiNodes`, `C_TaxiMap.GetTaxiPaths`, `C_TaxiMap.GetTaxiPathWaypoints`, `C_TaxiMap.GetTaxiRoute` |
 | [Time](docs/API.md#time) | `C_DateAndTime.AdjustTimeByDays`, `C_DateAndTime.AdjustTimeByMinutes`, `C_DateAndTime.CompareCalendarTime`, `C_DateAndTime.GetCalendarTimeFromEpoch`, `C_DateAndTime.GetCurrentCalendarTime`, `C_DateAndTime.GetSecondsUntilDailyReset`, `C_DateAndTime.GetServerTimeLocal`, `C_Timer.After`, `C_Timer.NewTicker`, `C_Timer.NewTimer`, `GetServerTime` |
 | [Totem](docs/API.md#totem) | `GetTotemInfo`, `GetTotemTimeLeft`, `GetTotemDuration`, `TargetTotem` |
 | [TradeSkillUI](docs/API.md#tradeskillui) | `C_TradeSkillUI.GetTradeSkillListLink`, `C_TradeSkillUI.GetCraftListLink`, `C_TradeSkillUI.GetTradeSkillListRecipes` |
 | [UIColor](docs/API.md#uicolor) | `C_UIColor.GetColors` |
-| [Unit](docs/API.md#unit) | `ClosestUnitPosition`, `GetUnitSpeed`, `UnitClassBase`, `UnitCreatureFamilyID`, `UnitCreatureTypeID`, `UnitDistanceSquared`, `UnitGUID`, `UnitInLineOfSight`, `UnitInRange`, `UnitIsAFK`, `UnitIsDND`, `UnitIsFeignDeath`, `UnitIsInMyGuild`, `UnitIsMinion`, `UnitIsOtherPlayersPet`, `UnitIsPet`, `UnitIsPossessed`, `UnitOwnerGUID`, `UnitPower`, `UnitPowerMax`, `UnitPowerType`, `UnitRaceBase`, `UnitStandState`, `UnitSubName`, `UnitTokenFromGUID` |
+| [Unit](docs/API.md#unit) | `ClosestUnitPosition`, `GetUnitSpeed`, `UnitClassBase`, `UnitCreatureFamilyID`, `UnitCreatureTypeID`, `UnitDistanceSquared`, `UnitGUID`, `UnitHealthMissing`, `UnitInLineOfSight`, `UnitInRange`, `UnitIsAFK`, `UnitIsDND`, `UnitIsFeignDeath`, `UnitIsInMyGuild`, `UnitIsMinion`, `UnitIsOtherPlayersPet`, `UnitIsPet`, `UnitIsPossessed`, `UnitOwnerGUID`, `UnitPower`, `UnitPowerMax`, `UnitPowerMissing`, `UnitPowerType`, `UnitRaceBase`, `UnitSpellHaste`, `UnitStandState`, `UnitSubName`, `UnitTokenFromGUID` |
 | [UnitAuras](docs/API.md#unitauras) | `C_UnitAuras.GetAuraDataByIndex`, `C_UnitAuras.GetAuraDataBySpellName`, `C_UnitAuras.GetAuraDispelTypeColor`, `C_UnitAuras.GetBuffDataByIndex`, `C_UnitAuras.GetDebuffDataByIndex`, `C_UnitAuras.GetPlayerAuraBySpellID`, `C_UnitAuras.GetUnitAuraBySpellID`, `C_UnitAuras.GetUnitAuras`, `C_UnitAuras.RegisterComboDuration` |
 | [VoiceChat](docs/API.md#voicechat) | `C_VoiceChat.GetTtsVoices`, `C_VoiceChat.GetRemoteTtsVoices`, `C_VoiceChat.SpeakText`, `C_VoiceChat.StopSpeakingText`, `C_TTSSettings.GetSpeechRate`, `C_TTSSettings.GetSpeechVolume`, `C_TTSSettings.GetSpeechVoiceID`, `C_TTSSettings.GetVoiceOptionName`, `C_TTSSettings.SetSpeechRate`, `C_TTSSettings.SetSpeechVolume`, `C_TTSSettings.SetVoiceOption`, `C_TTSSettings.SetVoiceOptionByName`, `C_TTSSettings.SetDefaultSettings`, `C_TTSSettings.RefreshVoices` |
 | [XMLUtil](docs/API.md#xmlutil) | `C_XMLUtil.DoesTemplateExist`, `C_XMLUtil.GetTemplateInfo`, `C_XMLUtil.GetTemplates` |
@@ -95,6 +95,7 @@ build instructions.

 - [Events](#events)
  - [`C_EventUtils.IsEventValid(eventName)`](#c_eventutilsiseventvalideventname)
+  - [`GetFramesRegisteredForEvent(event)`](#getframesregisteredforeventevent)
  - [`PLAYER_ENTERING_WORLD` payload (`isInitialLogin`, `isReloadingUi`)](#player_entering_world-payload-isinitiallogin-isreloadingui)
  - [`PLAYER_TOTEM_UPDATE` event](#player_totem_update-event)
  - [`BAG_UPDATE_DELAYED` event](#bag_update_delayed-event)
@@ -160,6 +161,7 @@ build instructions.

 - [GameTooltip](#gametooltip)
  - [`GameTooltip:SetSpellByID(spellID)`](#gametooltipsetspellbyidspellid)
+  - [`GameTooltip:AddSpellByID(spellID)`](#gametooltipaddspellbyidspellid)
  - [`GameTooltip:SetTalentByID(talentID)`](#gametooltipsettalentbyidtalentid)
  - [`GameTooltip:SetInventoryItemByID(itemID)`](#gametooltipsetinventoryitembyiditemid)
  - [`GameTooltip:SetHyperlinkCompareItem("itemLink" [, offset, shiftButton, comparisonTooltip])`](#gametooltipsethyperlinkcompareitemitemlink--offset-shiftbutton-comparisontooltip)
@@ -167,6 +169,7 @@ build instructions.
  - [`OnTooltipSetItem` script](#ontooltipsetitem-script)
  - [`GameTooltip:SetItemByGUID(itemGUID)`](#gametooltipsetitembyguiditemguid)
  - [`GameTooltip:SetEquipmentSet(name)`](#gametooltipsetequipmentsetname)
+  - [`GameTooltip:SetTotem(slot)`](#gametooltipsettotemslot)
  - [`GameTooltip:GetItem()`](#gametooltipgetitem)
  - [`GameTooltip:GetSpell()`](#gametooltipgetspell)
  - [`GameTooltip:HasItem()` / `GameTooltip:HasSpell()`](#gametooltiphasitem--gametooltiphasspell)
@@ -334,6 +337,9 @@ build instructions.
  - [`C_MerchantFrame.IsMerchantItemRefundable(slot)`](#c_merchantframeismerchantitemrefundableslot)
  - [`C_MerchantFrame.IsSellAllJunkEnabled()`](#c_merchantframeissellalljunkenabled)

+- [ChatBubbles](#chatbubbles)
+  - [`C_ChatBubbles.GetAllChatBubbles([includeForbidden])`](#c_chatbubblesgetallchatbubblesincludeforbidden)
+
 - [NamePlate](#nameplate)
  - [`C_NamePlate.GetNamePlates()`](#c_nameplategetnameplates)
  - [`C_NamePlate.GetNamePlateGUIDs()`](#c_nameplategetnameplateguids)
@@ -445,9 +451,20 @@ build instructions.
  - [`GetTalentSpellID(tabIndex, talentIndex, [rank])`](#gettalentspellidtabindex-talentindex-rank)
  - [`GetTalentIDByIndex(tabIndex, talentIndex)`](#gettalentidbyindextabindex-talentindex)

+- [Targeting](#targeting)
+  - [`GetPlayerFacing()`](#getplayerfacing)
+  - [`TargetDirectionEnemy(facing [, coneAngle])`](#targetdirectionenemyfacing--coneangle)
+  - [`TargetDirectionFriend(facing [, coneAngle])`](#targetdirectionfriendfacing--coneangle)
+  - [`TargetNearest([reverse])`](#targetnearestreverse)
+  - [`TargetNearestEnemyPlayer([reverse])`](#targetnearestenemyplayerreverse)
+  - [`TargetNearestFriendPlayer([reverse])`](#targetnearestfriendplayerreverse)
+
 - [TaxiMap](#taximap)
  - [`C_TaxiMap.GetTaxiNodesForMap([mapID])`](#c_taximapgettaxinodesformapmapid)
  - [`C_TaxiMap.GetAllTaxiNodes([uiMapID])`](#c_taximapgetalltaxinodesuimapid)
+  - [`C_TaxiMap.GetTaxiPaths()`](#c_taximapgettaxipaths)
+  - [`C_TaxiMap.GetTaxiPathWaypoints(pathID)`](#c_taximapgettaxipathwaypointspathid)
+  - [`C_TaxiMap.GetTaxiRoute(slotIndex)`](#c_taximapgettaxiroutepslotindex)

 - [Time](#time)
  - [`GetServerTime()`](#getservertime)
@@ -499,8 +516,11 @@ build instructions.
  - [`UnitDistanceSquared(unit)`](#unitdistancesquaredunit)
  - [`UnitInLineOfSight(unit)`](#unitinlineofsightunit)
  - [`ClosestUnitPosition(creatureID)`](#closestunitpositioncreatureid)
-  - [`UnitPower(unit [, powerType])` / `UnitPowerMax(unit [, powerType])`](#unitpowerunit--powertype--unitpowermaxunit--powertype)
+  - [`UnitHealthMissing(unit)`](#unithealthmissingunit)
+  - [`UnitPower(unit [, powerType [, unmodified]])` / `UnitPowerMax(unit [, powerType [, unmodified]])`](#unitpowerunit--powertype--unmodified--unitpowermaxunit--powertype--unmodified)
+  - [`UnitPowerMissing(unit [, powerType [, unmodified]])`](#unitpowermissingunit--powertype--unmodified)
  - [`UnitPowerType(unit)`](#unitpowertypeunit)
+  - [`UnitSpellHaste(unit)`](#unitspellhasteunit)

 - [UnitAuras](#unitauras)
  - [`C_UnitAuras.GetAuraDataByIndex(unit, index [, filter])`](#c_unitaurasgetauradatabyindexunit-index--filter)
@@ -2235,6 +2255,27 @@ SuperWoWhook patches the binary's event names with its own. This matches
 what `frame:RegisterEvent` will actually accept, which is what addon code
 needs to know.

+### `GetFramesRegisteredForEvent(event)`
+
+Returns the frames currently registered for `event`, as multiple return
+values (matching the modern signature — not a table). Returns nothing when
+no frame is registered or the event name is unknown.
+
+```lua
+local f1, f2 = GetFramesRegisteredForEvent("PLAYER_LOGIN")
+for i = 1, select("#", GetFramesRegisteredForEvent("BAG_UPDATE")) do
+    local frame = select(i, GetFramesRegisteredForEvent("BAG_UPDATE"))
+    print(frame:GetName())
+end
+```
+
+Reads the engine's own subscriber chain — the exact list
+`frame:RegisterEvent` appends to — so it stays in sync with real
+registrations, including our `AutoReserve`-backed custom events. Frames
+created purely in C++ (nameplates, etc.) come back as their canonical
+wrapper, so `:GetName()` and other methods work; an anonymous frame's
+`:GetName()` is `nil`, same as on retail.
+
 ### `PLAYER_ENTERING_WORLD` payload (`isInitialLogin`, `isReloadingUi`)

 Backports the 8.0.1 payload onto vanilla's (natively arg-less)
@@ -3394,6 +3435,17 @@ so addons get the engine semantics they expect.
 Returns `nil` cleanly when no focus is set; doesn't raise the
 "Unknown unit name" error.

+**Unit events fire for `"focus"`.** `UNIT_HEALTH`, `UNIT_MANA`,
+`UNIT_AURA`, `UNIT_LEVEL`, `UNIT_MODEL_CHANGED`, … fire with
+`arg1 == "focus"` whenever the focused unit's corresponding descriptor
+field changes — even when it isn't your target, so a focus frame keeps
+updating while you fight something else. Backed by `Unit::TokenObserver`,
+which registers the engine's own unit-event descriptor-field observers
+for the focus unit (the exact watch the engine gives target/party/raid).
+A unit that is simultaneously your target and focus fires both
+`"target"` and `"focus"`. (Vanilla `OnEvent` handlers read the `arg1`
+global, not a function parameter.)
+
 [`UnitTokenFromGUID`](#unittokenfromguidguid) scans `"focus"` right
 after `"target"` (matching retail order), so a focused unit's GUID
 reverse-resolves to `"focus"` only if it isn't already addressable
@@ -3751,6 +3803,32 @@ GameTooltip:SetSpellByID(133)  -- Fireball
 GameTooltip:Show()
 ```

+### `GameTooltip:AddSpellByID(spellID)`
+
+The append counterpart to [`SetSpellByID`](#gametooltipsetspellbyidspellid):
+adds a spell's full tooltip (name, cast time, cost, range, description) to
+the *current* tooltip **without clearing** the existing lines. Works for any
+`spellID`, learned or not. Lets you compose tooltips — e.g. a header line
+plus a spell block.
+
+```lua
+GameTooltip:SetOwner(UIParent, "ANCHOR_CURSOR")
+GameTooltip:AddLine("Rank 3 grants:")
+GameTooltip:AddSpellByID(133)  -- Fireball, appended below the header
+GameTooltip:Show()
+```
+
+Unlike `SetSpellByID`, this does **not** update what
+[`GetSpell`](#gametooltipgetspell) reports — the appended spell isn't the
+tooltip's "primary" spell, so `GetSpell` keeps reflecting whatever `SetX`
+call (if any) built the base tooltip. Silent no-op for `spellID <= 0` or an
+unknown spell.
+
+> Vanilla's tooltip builder only exposes "append" via its internal talent
+> "next rank" preview, which emits a `Next rank:` header instead of the
+> spell name; we overwrite that header line with the real name so the
+> appended block reads normally.
+
 ### `GameTooltip:GetItem()`

 Returns `(name, link, itemID)` for whichever item the tooltip is
@@ -4187,6 +4265,41 @@ before the itemID field was added load fine but render their
 missing slots with the count summary `%d missing` instead of named
 lines; re-saving a set repopulates itemIDs.

+### `GameTooltip:SetTotem(slot)`
+
+Fills the tooltip with the shaman totem currently active in `slot`
+(`1` Fire, `2` Earth, `3` Water, `4` Air). A TBC (2.4.0) tooltip method
+backported to 1.12; mirrors retail's `Script_GameTooltip_SetTotem`.
+
+```lua
+GameTooltip:SetOwner(TotemButton, "ANCHOR_BOTTOMRIGHT")
+GameTooltip:SetTotem(1)   -- Fire slot; shows itself, no :Show() needed
+```
+
+```
+Searing Totem              (name, yellow)
+45 Sec                     (time remaining, white)
+```
+
+Two lines, matching retail exactly: the totem name (`NORMAL_FONT_COLOR`)
+and the time remaining (white). Built natively with the engine's own
+per-tooltip clear and raw add-line — the same path `SetSpellByID` and
+`SetHyperlinkCompareItem` use — and **shows itself** at the end, so no
+trailing `:Show()` is required (retail's `TotemFrame.xml` OnEnter calls
+`SetOwner` then `SetTotem` with no show, and the C method shows). Set the
+owner/anchor before the call.
+
+Silent no-op when the slot has no active totem, so a totem-button
+`OnEnter` can call it unconditionally.
+
+**Localization.** The time line mirrors retail's `SecondsToTimeAbbrev`
+(raw seconds under a minute, minutes rounded up above) and formats
+through the FrameXML GlobalStrings `SPELL_TIME_REMAINING_SEC` /
+`SPELL_TIME_REMAINING_MIN` (English `%d Sec` / `%d Min` fallbacks for
+servers stripped of those keys). The totem name comes from the summon
+spell's localized `Spell.dbc` name. Slot data is the same tracker behind
+[`GetTotemInfo`](#gettoteminfoslot).
+
 ## Globals

 ### `CLASSIC_API_VERSION`
@@ -8012,6 +8125,42 @@ No retail equivalent (retail ships only the explored getter; its inverse,
 `C_Map.GetMapOverlays`, returns *everything*). Same table shape and
 `areaID` semantics as the explored getter.

+## ChatBubbles
+
+### `C_ChatBubbles.GetAllChatBubbles([includeForbidden])`
+
+Returns a 1-based table of the currently-active chat-bubble `Frame`
+objects (the speech bubbles above characters who `/say` or `/yell`).
+Modern WoW added this in 7.2.5 to replace the old "iterate over
+`WorldFrame` children and guess which are bubbles" idiom — we hand you
+the exact set instead.
+
+```lua
+for _, bubble in ipairs(C_ChatBubbles.GetAllChatBubbles()) do
+    -- The spoken text lives in the bubble's FontString region.
+    for _, region in ipairs({bubble:GetRegions()}) do
+        if region.GetText and region:GetText() then
+            print(region:GetText())
+        end
+    end
+end
+```
+
+Vanilla 1.12 chat bubbles are `CGChatBubbleFrame`s — full frames the
+engine creates in C++ without ever calling `CreateFrame` (same as
+default nameplates). The returned frames are the engine's **canonical
+wrappers**: real, method-capable (`:GetRegions()`, `:IsShown()`,
+`:GetPoint()`, …), and identical to the object any other addon that
+touches the bubble sees, so decorations survive. The spoken-text
+FontString is parented to the bubble, so it shows up in
+`:GetRegions()`.
+
+`includeForbidden` is accepted for signature parity and ignored —
+vanilla has no forbidden frames, so every active bubble is returned
+regardless. Returns an empty table when no bubbles are showing. A
+bubble whose owner just despawned can linger for one frame before the
+engine prunes it; filter on `bubble:IsShown()` if that matters.
+
 ## NamePlate

 Modern `C_NamePlate.*` returns nameplate `Frame` objects keyed off
@@ -8156,11 +8305,14 @@ for i = 1, 40 do
 end
 ```

-Ordering is **creation-order** — each new plate appends to the end of
-the list and stays at its index until the unit goes out of range or
-the plate is removed, at which point later indices shift down.
-Stable for the lifetime of a single plate; no mid-frame reordering.
-Same semantics as modern WoW.
+Indices are **assigned slots**, matching modern WoW exactly: a plate keeps
+its slot for its entire lifetime, so surviving plates are **never
+renumbered** when another plate is removed. A removed plate frees its slot,
+and the next new plate reuses the lowest free slot. So a middle plate
+vanishing leaves the others' `nameplateN` tokens unchanged (that slot simply
+becomes vacant until a new plate reuses it) — `UnitExists("nameplateN")`
+returns `false` for a currently-free slot. Stable for the lifetime of a
+single plate; no reordering, ever.

 Token chains work too — `"nameplate1target"`, `"nameplate1targettarget"`,
 etc. — by mirroring the engine's own `targettarget`-style suffix
@@ -8171,6 +8323,15 @@ own walker either, so they don't compose.
 Out-of-range indices return `nil` cleanly without raising "Unknown
 unit name" — `UnitExists("nameplate99")` just returns `false`.

+**Unit events fire for `"nameplateN"`.** Like party/raid tokens,
+`UNIT_HEALTH` / `UNIT_AURA` / `UNIT_LEVEL` / … fire with
+`arg1 == "nameplateN"` when a nameplated unit's descriptor field changes
+(vanilla only watched its own target/party/raid units). Backed by
+`Unit::TokenObserver` — observers are registered per plate on
+`NAME_PLATE_UNIT_ADDED` and torn down on `_REMOVED`; the changed GUID is
+resolved to its *current* index at fire time, since indices shift as
+plates vanish. Note the per-plate observer cost in very large scenes.
+
 **Implementation note.** We hook `FUN_TOKEN_TO_GUID` (the central
 token→GUID resolver) so the entire `Script_Unit*` surface gains the
 new token form transparently. The hook is gated by an `SStrCmpI`
@@ -10935,6 +11096,74 @@ a different field.
 Equivalent to the talentID return slot of `GetTalentInfo` in modern
 WoW (5.0+; not exposed at all in 1.12).

+## Targeting
+
+Backports of the post-vanilla `TargetScript` selection functions. Vanilla
+already ships `TargetNearestEnemy/Friend/PartyMember/RaidMember`,
+`TargetLastEnemy/Target`, `AssistUnit`, `TargetUnit`, `ClearTarget`; these
+fill in the ones added in later patches. They're built on the engine's own
+tab-targeting core — the same visible-unit enumeration, per-mode validity
+predicate (reaction/attackability/alive), and selection commit the native
+`TargetNearestEnemy` uses — so hostility semantics match the client exactly.
+
+Not backported (no vanilla equivalent — soft-target / action-camera era):
+`TargetPriorityHighlightStart/End`, `IsTargetLoose`, `TargetToggle`.
+
+### `GetPlayerFacing()`
+
+Returns the player's facing as an angle in radians (`0` … `2*pi`,
+increasing counter-clockwise), or nothing off-world (glue / loading).
+Vanilla never shipped this (only character-create/select facing exist), but
+it's the companion the direction-target functions below need — pass it to
+aim "in front of me."
+
+```lua
+local facing = GetPlayerFacing()   -- e.g. 1.65
+```
+
+Read from the player unit's movement-block orientation field
+(`player + 0x9C4`).
+
+### `TargetDirectionEnemy(facing [, coneAngle])`
+
+Targets the nearest **attackable** unit within a cone centered on `facing`
+(an absolute world angle in radians, as returned by `GetPlayerFacing()`).
+`coneAngle` is the full cone width in radians; omitted, it defaults to
+`pi/2` (90° — 45° to either side).
+
+```lua
+-- Target whatever enemy you're looking at:
+TargetDirectionEnemy(GetPlayerFacing())
+
+-- Wider 180° sweep in front:
+TargetDirectionEnemy(GetPlayerFacing(), math.pi)
+```
+
+Does nothing if no enemy falls inside the cone. "Attackable" uses the
+engine's own reaction check, so it matches what `TargetNearestEnemy` would
+consider a valid enemy (hostile, alive, not a critter).
+
+### `TargetDirectionFriend(facing [, coneAngle])`
+
+Same as `TargetDirectionEnemy`, but selects the nearest **friendly**
+(assistable) unit in the cone.
+
+### `TargetNearest([reverse])`
+
+Cycles the nearest unit you can attack or assist. Repeated calls within ~1s
+step through candidates nearest→farthest (a frozen snapshot, so the order
+is stable mid-cycle); a longer gap or an externally-changed target rebuilds
+and re-targets the nearest. `reverse` (truthy) steps the other way.
+
+### `TargetNearestEnemyPlayer([reverse])`
+
+Like `TargetNearest`, but restricted to hostile **players** (PvP targeting).
+Same cycle behavior and `reverse` flag.
+
+### `TargetNearestFriendPlayer([reverse])`
+
+Like `TargetNearestEnemyPlayer`, but restricted to friendly **players**.
+
 ## TaxiMap

 Backports of the retail taxi-map node enumerators, reading
@@ -11049,6 +11278,74 @@ and player-relative (its whole point is the open master's reachable set),
 which is why a static database like pfQuest uses `GetTaxiNodesForMap`
 instead.

+### `C_TaxiMap.GetTaxiPaths()`
+
+Returns every flight path (directed edge) in `TaxiPath.dbc` as an array of
+tables — the taxi routing graph. No flight master needed; reads the DBC
+directly.
+
+```lua
+local paths = C_TaxiMap.GetTaxiPaths()
+-- paths[i] = { pathID = 94, fromNodeID = 8, toNodeID = 16, cost = 110 }
+```
+
+| Field | Type | Meaning |
+|-------|------|---------|
+| `pathID` | number | `TaxiPath.dbc` id — pass to `GetTaxiPathWaypoints` |
+| `fromNodeID` | number | source `TaxiNodes.dbc` id |
+| `toNodeID` | number | destination `TaxiNodes.dbc` id |
+| `cost` | number | flight cost in copper (the routing weight) |
+
+Directed — `A→B` and `B→A` are two separate entries with their own path IDs
+and geometry. Combine with `GetTaxiNodesForMap` (the node table) to build a
+weighted graph, and with `GetTaxiPathWaypoints` to measure real distances.
+
+### `C_TaxiMap.GetTaxiPathWaypoints(pathID)`
+
+Returns the waypoint polyline of one flight path as an array of world
+coordinates, ordered by node index (flight order).
+
+```lua
+local wp = C_TaxiMap.GetTaxiPathWaypoints(94)
+-- wp[i] = { x = -8851.66, y = 498.55, z = 111.26, mapID = 0 }
+```
+
+| Field | Type | Meaning |
+|-------|------|---------|
+| `x`, `y`, `z` | number | world position (yards) |
+| `mapID` | number | continent (`Map.dbc` id) |
+
+Returns nothing for an unknown `pathID` or an empty path. Sum the 3D distances
+between consecutive waypoints for the path's length; vanilla taxi flight
+speed is 32 yd/s, so `length / 32 ≈ flight seconds` for a single hop.
+(Multi-hop trips are shorter than the sum of their segments — the server cuts
+the corner at each intermediate flight master via data not present in any
+client file, so a client-side estimate of a chained route is an upper bound.)
+
+### `C_TaxiMap.GetTaxiRoute(slotIndex)`
+
+Returns the node chain the client would actually fly to a taxi-map slot, as an
+array of `TaxiNodes.dbc` IDs in flight order (`{ currentNodeID, …, destNodeID }`).
+`slotIndex` is the legacy `1..NumTaxiNodes()` index (the same one
+`TaxiNodeName`/`TakeTaxiNode` take). **Only meaningful while the taxi map is
+open.**
+
+```lua
+local route = C_TaxiMap.GetTaxiRoute(slotIndex)
+-- route = { 8, 16, 43, 66 }  (Thelsamar -> Refuge Pointe -> Aerie Peak -> Chillwind)
+```
+
+This is the exact chain `TakeTaxiNode(slotIndex)` would send to the server —
+mirrors the client's own routing decision: a single direct hop when a `TaxiPath`
+edge exists (`{ current, dest }`), otherwise the client's precomputed multi-hop
+route (which, per character, may detour around flight points you haven't
+discovered). Returns nothing when the map is closed, the slot is out of range,
+it's the current node, or no route exists.
+
+Pairs with `GetTaxiPaths` (each consecutive `(from, to)` names a `pathID`) and
+`GetTaxiPathWaypoints` (that path's geometry) to measure a chained trip without
+matching flight-map pixel coordinates back to nodes.
+
 ## Time

 ### `GetServerTime()`
@@ -12055,7 +12352,28 @@ encodes `creatureID` (bits 24–47), and returns the closest one's position
 > zone the way retail's database can — but for "where's the nearest `<mob>`
 > I can see" it's more general than retail.

-### `UnitPower(unit [, powerType])` / `UnitPowerMax(unit [, powerType])`
+### `UnitHealthMissing(unit)`
+
+The health deficit — `UnitHealthMax(unit) - UnitHealth(unit)` — in one call.
+A convenience for healing addons (overheal math, "missing health" bars) that
+would otherwise call both engine functions and subtract in Lua every frame.
+
+```lua
+local missing = UnitHealthMissing("player")   -- 0 at full health
+```
+
+Returns `0` at full health and for a valid-but-absent unit (e.g. `"target"`
+with nothing targeted), matching `UnitHealth`'s 0-for-missing convention;
+clamped so a transient `current > max` never returns negative.
+
+Tracks the engine's own `UnitHealth` / `UnitHealthMax` exactly, including
+vanilla's percentage form for non-grouped units (where `UnitHealthMax` is
+`100`): a target at `85/100` reports `15`.
+
+Direct descriptor reads — `desc[+0x40]` (HEALTH), `desc[+0x58]` (MAXHEALTH).
+No engine call, no Lua-stack roundtrip.
+
+### `UnitPower(unit [, powerType [, unmodified]])` / `UnitPowerMax(unit [, powerType [, unmodified]])`

 Modern multi-power-type getters. Vanilla 1.12 only ships
 `UnitMana(unit)` / `UnitManaMax(unit)` which return whichever
@@ -12112,10 +12430,35 @@ the divisor table at `0x0086F978`:
 So a fresh warrior reads `UnitPower("player", 1)` = `0..100`, not
 `0..1000`. Matches retail Classic.

+Pass a truthy `unmodified` (third arg) to bypass the divisor and get the raw
+internal value — `UnitPower("player", 1, true)` returns rage as `0..1000`.
+Same third argument retail's `UnitPower` / `UnitPowerMax` take.
+
 Direct descriptor reads — `desc[+0x44 + type*4]` for current power,
 `desc[+0x5C + type*4]` for max, divided by the table entry for the
 type. No engine call, no Lua-stack roundtrip.

+### `UnitPowerMissing(unit [, powerType [, unmodified]])`
+
+The power deficit — `UnitPowerMax(...) - UnitPower(...)` for the given type —
+in one call. The power analogue of [`UnitHealthMissing`](#unithealthmissingunit),
+for energy/mana/rage "resource needed" checks. Same `unit` / `powerType`
+handling and invalid-unit-returns-`0` semantics as `UnitPower`.
+
+```lua
+local energyNeeded = UnitPowerMissing("player", Enum.PowerType.Energy)
+local rageMissing  = UnitPowerMissing("player")   -- primary power
+```
+
+`unmodified` (arg 3, any truthy value) skips the display divisor and returns
+the raw internal deficit — the same third argument retail's `UnitPower` takes.
+
+Computed as the difference of the two **display** values (each integer-divided
+by the per-type divisor), not by dividing the raw difference, so it equals
+`UnitPowerMax(...) - UnitPower(...)` exactly. Those diverge for rage: raw
+`1000/55` displays as `100/5`, a deficit of `95`, whereas `(1000-55)/10`
+truncates to `94`. Clamped at 0.
+
 ### `UnitPowerType(unit)`

 Vanilla 1.12 ships this returning just the integer power type;
@@ -12149,6 +12492,27 @@ Chains to the engine's original `Script_UnitPowerType` at
 manager lookup with pet / totem / vehicle fallbacks), then reads
 the just-pushed integer and appends the token string.

+### `UnitSpellHaste(unit)`
+
+Backport of the TBC+ spell-haste getter — vanilla 1.12 has no haste API.
+Returns the spell haste **percentage**: `0` for an unhasted unit, positive
+when casting is sped up, negative when slowed (Curse of Tongues).
+
+```lua
+local haste = UnitSpellHaste("player")   -- 0 for most vanilla casters
+```
+
+Reads `UNIT_MOD_CAST_SPEED` — the cast-time multiplier at descriptor `+0x22c`
+that the server folds into `SpellEntry::GetCastTime`
+(`castTime *= modCastSpeed`) — and converts it to a percentage:
+`haste% = (1 / modCastSpeed - 1) * 100`. So `modCastSpeed` `1.0` → `0`,
+`0.5` (half cast time) → `100`, `>1.0` → negative.
+
+This is the Blizzard-shaped surface over the field nampower exposes raw as
+`GetUnitField(unit, "modCastSpeed")`, so addons can drop that dependency.
+Consumers that need the raw multiplier back can recover it as
+`1 / (1 + UnitSpellHaste(unit) / 100)`. Returns `0` for invalid units.
+
 ## UnitAuras

 Backport of the modern `C_UnitAuras` namespace. Returns
@@ -463,6 +463,30 @@ enum Offsets {
    // (lo) and `guid[1]` (hi) through the pointer.
    FUN_TARGET_BY_GUID = 0x00489A40,

+    // Tab-targeting internals, shared with our backported TargetNearest* /
+    // TargetDirection* family (`target/Nearest.cpp`).
+    //
+    // `FUN_TARGET_CANDIDATE_VALID` (0x00493E40) — the engine's per-mode
+    // candidate validity predicate used by the native `TargetNearestEnemy`
+    // / `TargetNearestFriend` cycle. `__fastcall(CGUnit *player /*ecx*/,
+    // CGUnit *candidate /*edx*/, int mode) → int` (nonzero = valid). Modes:
+    // 1 = enemy (attackable + alive + not-critter), 2 = friend (assistable +
+    // alive), 3 = party, 4 = raid. Wraps the reaction cores
+    // `FUN_00606980` (can-attack) / `FUN_006066f0` (can-assist), so calling
+    // it gives us the engine's exact hostility semantics for free.
+    FUN_TARGET_CANDIDATE_VALID = 0x00493E40,
+    // `FUN_SET_SELECTION_BY_GUID` (0x00493540) — canonical target setter the
+    // native tab-cycle commits through. `__cdecl(uint32_t guidLo, uint32_t
+    // guidHi)`. Validates + fires CMSG_SET_SELECTION + client target +
+    // event 0xC3, and maintains the current-selection globals below.
+    // Passing {0,0} clears the target.
+    FUN_SET_SELECTION_BY_GUID = 0x00493540,
+    // Current target-selection GUID (lo/hi), written by
+    // `FUN_SET_SELECTION_BY_GUID`. We read it to detect whether the player's
+    // target changed out from under an in-progress tab-cycle.
+    VAR_CURRENT_SELECTION_GUID_LO = 0x00B4E2D8,
+    VAR_CURRENT_SELECTION_GUID_HI = 0x00B4E2DC,
+
    // Local-player CGObject-like global. Not the same pointer as
    // ResolveUnitToken("player") returns — that one's the canonical
    // CGPlayer_C used by inventory etc. This pointer's +0xC0 field
@@ -640,6 +664,25 @@ enum Offsets {
    // The live (new) value is NOT passed — read it from the object (the
    // engine's bag callback reads the invMgr GUID array).

+    // ---- Unit-event token observers (Unit::TokenObserver) ---------------
+    // The engine makes target/party/raid/pet/mouseover units fire per-token
+    // unit events (UNIT_HEALTH, UNIT_MANA, UNIT_AURA, …) by watching bank-UNIT
+    // descriptor fields: FUN_0051bbb0 loops event index i in
+    // [0, EVENT_NAME_UNIT_MAX); for each whose static name slot is non-null it
+    // registers a bank-3 observer on field i*4 (per-index size below) with
+    // callback FUN_0051bd50 → the broadcast FUN_00515e50(guid, i), which fires
+    // event i once per token referencing the guid. The FIELD INDEX IS THE EVENT
+    // ID (health field +0x40 → event 16 = UNIT_HEALTH). Unit::TokenObserver
+    // replicates that exact loop with a caller's own callback to make synthetic
+    // tokens (focus, nameplateN) first-class; the registrar always appends a
+    // fresh node (FUN_00467f00, no dedup), so ours coexists with the engine's —
+    // a unit that is also the target fires both "target" and our token. The
+    // broadcast always fires with format "%s" + the token (DAT_0082e280).
+    //   Per-index watched size (FUN_0051bbb0's switch): i∈{0,2,4,10}=8,
+    //   0x29=0xD8 (UNIT_FIELD_AURA), 0x6B=0x30, 0xA7/0xAE=0x1C, else 4.
+    VAR_EVENT_NAME_TABLE_STATIC = 0x00BE1198, // char*[] boot name array; slot i (base+i*4) non-null ⇒ real event i
+    EVENT_NAME_UNIT_MAX = 0xB6,               // FUN_0051bbb0's loop bound
+
    // The engine's inventory observer setup — registers the bag-slot
    // GUID-field observers above, once per enter-world (sole caller is the
    // enter-world initializer FUN_004908C0, latched by DAT_00B4B424).
@@ -655,6 +698,7 @@ enum Offsets {
    OFF_DESC_PLAYER_EQUIP_FIRST = 0x4A8,
    DESC_PLAYER_EQUIP_SLOTS = 19,
    DESC_OBSERVER_BANK_PLAYER = 4,
+    DESC_OBSERVER_BANK_UNIT = 3, // CGUnit descriptor bank (FUN_0051bbb0's watch loop)

    // ITEM_FIELD_DURABILITY, ITEM-bank-relative: descriptor-absolute
    // +0xA0 (field index 0x28, which counts the 6 OBJECT fields) minus
@@ -782,6 +826,15 @@ enum Offsets {
    // mana/rage/focus/energy/happiness order as POWER1..5). Vanilla
    // 1.12 has 5 power types; the WotLK additions (Runes / Runic Power)
    // don't exist in this descriptor layout.
+
+    // UNIT_MOD_CAST_SPEED — the cast-time multiplier float (1.0 = normal,
+    // <1.0 = faster). The server folds it into `SpellEntry::GetCastTime`
+    // (`castTime *= GetFloatValue(UNIT_MOD_CAST_SPEED)`); the client reads it
+    // in `FUN_006e3340` at descriptor `+0x22c`. Backs `UnitSpellHaste`
+    // (`haste% = (1/mult - 1) * 100`). nampower surfaces the raw float as its
+    // `modCastSpeed` unit field.
+    OFF_UNIT_MOD_CAST_SPEED = 0x22C,
+
    UNIT_POWER_MIN_TYPE = 0,
    UNIT_POWER_MAX_TYPE = 4, // happiness; types 5/6 only valid post-WotLK

@@ -1476,6 +1529,15 @@ enum Offsets {
    // `0x0048BACF` / `0x0048BADC`.
    OFF_CGOBJECT_VTBL_GET_POSITION = 0x14,

+    // CGUnit movement-block orientation (facing) in radians, 0..2*pi. Lives
+    // right after the {x,y,z} position block (at +0x9B8), i.e. pos+0xC. The
+    // `GetPosition` virtual copies only x/y/z into the caller's buffer, so
+    // read facing off the object directly. Backs `GetPlayerFacing`. Empirically
+    // located by probing the player object across a known 180-degree turn
+    // (value flipped by ~pi, stayed in range); mirrored at +0x9F8 / +0xC98
+    // (last-sent / render copies) — +0x9C4 is the authoritative one.
+    OFF_UNIT_FACING = 0x9C4,
+
    // CGObject `m_objectType` field — 0 = (base) object, 1 = item,
    // 2 = container, 3 = unit, 4 = player, 5 = gameobject, … Read as
    // `*(int *)(obj + 0x14)`. (Distinct from GET_POSITION above, which
@@ -2405,6 +2467,29 @@ enum Offsets {
    // "DISTANT" / other) — the node's reachability for the open session.
    FUN_TAXI_NODE_TYPE = 0x004DC4E0,

+    // Per-slot computed route (the chain that TakeTaxiNode sends to the
+    // server). Derived from FUN_004dc8d0 (the TakeTaxiNode worker) and the
+    // route builder FUN_004dbce0:
+    //   +0x0C (byte)  nonzero when the multi-hop route array below is built
+    //   +0x14 (int*)  array of TaxiNodes.dbc IDs, current->dest in flight
+    //                 order, length at +0x18
+    //   +0x18 (int)   route length (node count; hops = count - 1)
+    // A direct hop (a TaxiPath edge exists current->dest) is flown as just
+    // {current, dest} and does NOT populate +0x14 — see VAR_TAXI_ADJACENCY.
+    OFF_TAXI_SLOT_MULTIHOP = 0x0C,
+    OFF_TAXI_SLOT_ROUTE = 0x14,
+    OFF_TAXI_SLOT_ROUTE_COUNT = 0x18,
+
+    // Pointer to the CURRENT flight master's TaxiNodes.dbc record (id @ +0);
+    // the origin of every route. Used by FUN_004dc8d0 / FUN_004dbce0.
+    VAR_TAXI_CURRENT_REC = 0x00BB4A80,
+
+    // Node x node -> pathID adjacency matrix (256-wide rows, int cells; cell
+    // [from*0x100 + to] is the direct TaxiPath id, or 0 if none). Backs the
+    // direct-hop test FUN_004dbad0. IDs are 1..256.
+    VAR_TAXI_ADJACENCY = 0x00B7365C,
+    TAXI_ADJACENCY_DIM = 0x100,
+
    // TaxiPath.dbc (4 fields, 0x10 bytes): {id, fromNode@+0x04, toNode@+0x08,
    // cost}. A real flight master is a node some flight path connects to;
    // Northshire Abbey / spurious duplicate rows / standalone markers are not
@@ -2413,6 +2498,23 @@ enum Offsets {
    VAR_TAXIPATH_COUNT = 0x00C0D69C,
    OFF_TAXIPATH_FROM = 0x04,
    OFF_TAXIPATH_TO = 0x08,
+    OFF_TAXIPATH_COST = 0x0C,
+
+    // TaxiPathNode.dbc — the per-path flight waypoints. 1-based
+    // record-pointer array (records/count slots per docs/DBCs.md). Record
+    // (verified against the extracted DBC + the loading-screen spline
+    // reader FUN_004075A0, which reads mapID@+0xC, X@+0x10, Y@+0x14):
+    //   {ID@+0, pathID@+4, nodeIndex@+8, mapID@+0xC,
+    //    X@+0x10, Y@+0x14, Z@+0x18 (float), flags@+0x1C, delay@+0x20}
+    // Waypoints of a path share pathID and order by nodeIndex.
+    VAR_TAXIPATHNODE_RECORDS = 0x00C0D6AC,
+    VAR_TAXIPATHNODE_COUNT = 0x00C0D6B0,
+    OFF_TAXIPATHNODE_PATH_ID = 0x04,
+    OFF_TAXIPATHNODE_INDEX = 0x08,
+    OFF_TAXIPATHNODE_MAP = 0x0C,
+    OFF_TAXIPATHNODE_X = 0x10,
+    OFF_TAXIPATHNODE_Y = 0x14,
+    OFF_TAXIPATHNODE_Z = 0x18,

    // Engine player-info cache — populated by the
    // SMSG_NAME_QUERY_RESPONSE handler (opcode 0x51) at 0x005551A0,
@@ -3914,6 +4016,10 @@ enum Offsets {
    // the frame into the matching entry's chain.
    VAR_EVENT_TABLE_BASE_PTR = 0x00CEEF68,
    VAR_EVENT_TABLE_COUNT = 0x00CEEF64,
+    // The FrameScript_EventObject is a `{cap@+0, count@+4, data@+8}` at
+    // 0x00CEEF60, so COUNT/BASE above are its +4/+8. `Event::Custom::Grow`
+    // writes all three (base, cap, count) when it enlarges the table.
+    VAR_EVENT_TABLE_CAP = 0x00CEEF60,
    EVENT_ENTRY_STRIDE = 0x10,
    OFF_EVENT_ENTRY_NAME = 0x00,
    OFF_EVENT_ENTRY_HEAD = 0x0C,
@@ -3954,6 +4060,17 @@ enum Offsets {
    // table after the rebuild settles. Kept for reference.
    FUN_REBUILD_EVENT_TABLE = 0x00703D90,

+    // Event-table allocator — `__thiscall(EventObject *this, uint32 count)`.
+    // Called by `RebuildEventTable` to (re)size the entry array. SuperWoW and
+    // nampower co-hook it to destructively clamp the FrameXML count (`> 200`;
+    // glue is smaller) to 700. We deliberately DON'T hook it: our default is
+    // claim-NULL into the engine's ~200 low gaps (which always suffices), and
+    // when a grow IS needed `Event::Custom::Grow` reallocates the buffer +
+    // swaps the globals directly (bypassing this clamp) rather than routing a
+    // size through here. Also documents the empty-entry init the grow mirrors
+    // ({name=0, +4=0, +8=&self, +0xC=(&self)|1}). Kept for reference.
+    FUN_FRAMESCRIPT_SET_EVENT_COUNT = 0x007053B0,
+
    // `FireEvent` — the engine's event dispatcher. 149 callers in the
    // binary. `__cdecl void(int eventID, const char *format, ...)`.
    // Indexes into `[VAR_EVENT_TABLE_BASE_PTR] + eventID * 0x10` and walks
@@ -4167,6 +4284,16 @@ enum Offsets {
    // from `SMemAlloc` (which it requires).
    FUN_STORM_SSTRDUP = 0x0064A620,

+    // Storm allocator/free — the pair the engine uses for the event-table
+    // buffer, so its reload teardown `SMemFree`s our grown buffer as its own.
+    // Both `__stdcall`, 4 args (`ret 0x10`); SMemAlloc flag bit 8 (`& 8`)
+    // zero-fills. `Event::Custom::Grow` uses them to reallocate the event
+    // buffer. (Same addresses as FUN_STORM_SMEM_ALLOC / _FREE above.)
+    //   void*  __stdcall SMemAlloc(uint size, const char *file, int line, int flags)
+    //   char   __stdcall SMemFree (void *ptr, const char *file, int line, int flags)
+    FUN_STORM_SMEMALLOC = 0x006462E0,
+    FUN_STORM_SMEMFREE = 0x00646430,
+
    // Talent system — per-player talent state populated at login from
    // (class, race) + Talent.dbc / TalentTab.dbc. The engine maintains
    // one `TabInfo *` per talent tab in the array at
@@ -0,0 +1,82 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_ChatBubbles.GetAllChatBubbles([includeForbidden])` — returns an
+// array of the currently-active chat-bubble Frame objects, matching
+// modern WoW's 7.2.5 signature. Addons use it to recolor / translate /
+// reposition speech bubbles by reading the bubble's FontString region.
+//
+// Vanilla 1.12 chat bubbles are `CGChatBubbleFrame`s — full
+// `CSimpleFrame`s created purely in C++ (never via `CreateFrame`), so
+// they have no name and no Lua wrapper until something pushes them. This
+// is exactly the default-nameplate case: we push each via the shared
+// `UI::FrameObject::Push`, which delegates to the engine's own
+// `FrameScript_Object::ScriptRegister` to lazily build the canonical
+// wrapper. The returned frames respond to real frame methods — the
+// FontString holding the spoken text (bubble + 0x31c, created with the
+// bubble as its parent) shows up in `bubble:GetRegions()`, so the modern
+// "iterate GetRegions, find the FontString, read GetText()" idiom works
+// unchanged. This is the pre-7.2.5 "walk WorldFrame children" pattern the
+// wiki describes, but handed the exact set instead of the whole world.
+//
+// The engine keeps active bubbles on an intrusive Storm `TSList` whose
+// head is `VAR_CHAT_BUBBLE_LIST_HEAD` (`0x00B6F038`); each node's forward
+// link sits at `+0x318` and the list terminator carries the low-bit
+// sentinel. We mirror the engine's own walk in the per-frame update
+// `FUN_004b1060` / teardown `FUN_004b0f80` verbatim. Bubbles whose owner
+// unit has despawned are pruned on the engine's next update tick, so a
+// just-orphaned bubble can linger one frame — harmless, and addons that
+// care filter on `bubble:IsShown()` (a real method here) anyway.
+//
+// `includeForbidden` is accepted and ignored: vanilla has no forbidden
+// frames, so every bubble is returned regardless.
+
+#include "Game.h"
+#include "ui/FrameObject.h"
+
+#include <cstdint>
+
+namespace ChatBubble::Info {
+
+namespace {
+
+// Storm TSList of live CGChatBubbleFrames. Head pointer, per-node
+// forward link, and the end-of-list low-bit sentinel — see the engine
+// walks at 0x004b1060 / 0x004b0f80.
+constexpr uintptr_t kListHead = 0x00B6F038;
+constexpr int kOffNextLink = 0x318;
+
+} // namespace
+
+static int __fastcall Script_GetAllChatBubbles(void *L) {
+    Game::Lua::NewTable(L);
+
+    uintptr_t node = *reinterpret_cast<const uintptr_t *>(kListHead);
+    int nextIndex = 1;
+    while (node != 0 && (node & 1) == 0) {
+        Game::Lua::PushNumber(L, static_cast<double>(nextIndex++));
+        UI::FrameObject::Push(L, reinterpret_cast<void *>(node));
+        Game::Lua::SetTable(L, -3);
+        node = *reinterpret_cast<const uintptr_t *>(node + kOffNextLink);
+    }
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_ChatBubbles", "GetAllChatBubbles",
+                                     &Script_GetAllChatBubbles);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace ChatBubble::Info
@@ -88,12 +88,27 @@ void Persist() {
 } // namespace

 void EnsureLoaded() {
-    if (g_loaded)
-        return;
-    g_path = Storage::ResolveFilePath();
-    if (g_path.empty())
-        return; // session globals not yet populated; retry on next call
+    // Re-resolve the per-character path on every call rather than latching
+    // once. The injected DLL persists across a logout→character-select→login
+    // (no process restart), so a permanent `g_loaded` latch would leave the
+    // previous character's file path and cached sets in place — the next
+    // character would then read, and save into, character A's data. Detecting
+    // a path change here makes the cache self-heal on any character/account
+    // switch. Every mutation Persist()s immediately, so dropping the old
+    // in-memory sets never loses unsaved work.
+    std::string path = Storage::ResolveFilePath();
+    if (path.empty())
+        return; // session globals not yet populated; keep current, retry later
+    if (g_loaded && path == g_path)
+        return; // already loaded for this character
+
+    g_path = std::move(path);
+    g_sets.clear();
    Storage::Load(g_path, &g_sets);
+    // Per-session "ignore this slot on next save" state belongs to the
+    // character it was set on — clear it when switching characters.
+    for (int i = 0; i < SLOT_COUNT; ++i)
+        g_ignoredForSave[i] = false;
    g_loaded = true;
 }

@@ -22,9 +22,11 @@ namespace EquipmentSet::Storage {
 // Resolves the per-character file path. Returns an empty string until
 // the engine has populated all three session globals (account, realm,
 // character). Path format: `WTF\Account\<acct>\<realm>\<char>\
-// ClassicAPI_EquipmentSets.txt`. Once the engine has the player in
-// world the values are stable for the rest of the session, so callers
-// can cache after the first non-empty return.
+// ClassicAPI_EquipmentSets.txt`. The values are stable only while the
+// current character is in world — they change on a logout→login to a
+// different character (the DLL is NOT reloaded across that transition),
+// so callers must re-resolve and compare rather than caching the first
+// non-empty return permanently. See `Data::EnsureLoaded`.
 std::string ResolveFilePath();

 // Reads the file at `path` and overwrites `outSets` with the parsed
@@ -40,11 +40,12 @@
 // `C_EquipmentSet.GetItemIDs` + `C_EquipmentSet.GetItemLocations`
 // themselves.
 //
-// Tooltip filling is done by calling back through Lua (`self:AddLine`
-// etc.) rather than hitting the engine's tooltip-line internals
-// directly. The Lua dispatch goes through the engine's own frame-
-// method registry, so any addon-installed hook on AddLine (DBM,
-// pfUI's tooltip skin, etc.) still runs.
+// Tooltip lines are built with the engine's own primitives — the
+// per-tooltip clear (FUN_GAMETOOLTIP_CLEAR) and the raw add-line
+// (FUN_GAMETOOLTIP_ADD_LINE), the same native path SetTotem and
+// SetHyperlinkCompareItem use; no Lua method dispatch. It shows itself
+// at the end (Script_Show), matching retail: PaperDollFrame.lua sets the
+// anchor then calls SetEquipmentSet with no trailing :Show().

 #include "Game.h"
 #include "Offsets.h"
@@ -58,57 +59,41 @@ namespace EquipmentSet::Tooltip {

 namespace {

-// Calls `self:Method()` with no Lua args. Stack at entry must have
-// the tooltip at index 1 (the standard `frame:method()` self slot).
-// Leaves the stack unchanged.
-void CallSelfNoArgs(void *L, const char *methodName) {
-    Game::Lua::PushValue(L, 1);
-    Game::Lua::PushString(L, methodName);
-    Game::Lua::GetTable(L, -2); // method = self[methodName]
-    Game::Lua::Insert(L, -2);   // [method, self]
-    Game::Lua::Call(L, 1, 0);
+using AddLine_t = void(__thiscall *)(void *self, const char *left, const char *right,
+                                     const void *leftColor, const void *rightColor, int wrap);
+using ClearTooltip_t = void(__fastcall *)(void *self);
+using ShowScript_t = int(__fastcall *)(void *L); // engine's Script_Show
+
+// Packs r,g,b (0..1) into the 0xAARRGGBB value FUN_GAMETOOLTIP_ADD_LINE's
+// color arg wants — its little-endian bytes are the {b,g,r,a} the engine's
+// line-color setter reads. Alpha is always opaque.
+uint32_t Pack(double r, double g, double b) {
+    auto ch = [](double v) {
+        const int i = static_cast<int>(v * 255.0 + 0.5);
+        return static_cast<uint32_t>(i < 0 ? 0 : (i > 255 ? 255 : i));
+    };
+    return 0xFF000000u | (ch(r) << 16) | (ch(g) << 8) | ch(b);
 }

-// Calls `self:AddLine(text, r, g, b)`. Same self-on-stack precondition.
-void AddLine(void *L, const char *text, double r, double g, double b) {
-    Game::Lua::PushValue(L, 1);
-    Game::Lua::PushString(L, "AddLine");
-    Game::Lua::GetTable(L, -2);
-    Game::Lua::Insert(L, -2);
-    Game::Lua::PushString(L, text);
-    Game::Lua::PushNumber(L, r);
-    Game::Lua::PushNumber(L, g);
-    Game::Lua::PushNumber(L, b);
-    Game::Lua::Call(L, 5, 0);
+// Left-aligned colored line via the engine's raw add-line. The packed
+// color is a local so its address stays valid across the call.
+void AddColoredLine(void *self, const char *text, double r, double g, double b) {
+    const uint32_t color = Pack(r, g, b);
+    reinterpret_cast<AddLine_t>(Offsets::FUN_GAMETOOLTIP_ADD_LINE)(
+        self, text, nullptr, &color, nullptr, 0);
 }

-// Calls `self:SetText(text, r, g, b)`. Same precondition. Used for
-// the header line — `SetText` is the standard vanilla entry for
-// "first line of a fresh tooltip" and handles internal redraw state
-// `AddLine` skips when it's the first content after a clear.
-void SetText(void *L, const char *text, double r, double g, double b) {
-    Game::Lua::PushValue(L, 1);
-    Game::Lua::PushString(L, "SetText");
-    Game::Lua::GetTable(L, -2);
-    Game::Lua::Insert(L, -2);
-    Game::Lua::PushString(L, text);
-    Game::Lua::PushNumber(L, r);
-    Game::Lua::PushNumber(L, g);
-    Game::Lua::PushNumber(L, b);
-    Game::Lua::Call(L, 5, 0); // self + text + r + g + b
-}
-
-// Format-and-add one localized count line. Calls
-// `Game::Lua::PushLocalizedFormatInt` to resolve the format string
-// (Blizzard's FrameXML globals like `ITEMS_EQUIPPED` first, with the
-// C `fallback` for stripped-down servers), then dispatches `AddLine`.
-void AddLocalizedLineInt(void *L, const char *globalName, const char *fallback, int n,
-                         double r, double g, double b) {
+// Adds one localized "N unit" line: `string.format(_G[globalName] or
+// fallback, n)` (the project's GlobalString localize-or-fallback helper,
+// with the C `fallback` for servers stripped of the standard strings),
+// then the native colored add-line.
+void AddLocalizedLineInt(void *L, void *self, const char *globalName,
+                         const char *fallback, int n, double r, double g, double b) {
    const int savedTop = Game::Lua::GetTop(L);
    Game::Lua::PushLocalizedFormatInt(L, globalName, fallback, n);
    const char *text = Game::Lua::ToString(L, -1);
    if (text != nullptr)
-        AddLine(L, text, r, g, b);
+        AddColoredLine(self, text, r, g, b);
    Game::Lua::SetTop(L, savedTop);
 }

@@ -185,39 +170,36 @@ int __fastcall Script_GameTooltipSetEquipmentSet(void *L) {
    if (s == nullptr)
        return 0;

+    void *self = Game::Lua::ResolveObject(L, 1);
+    if (self == nullptr)
+        return 0;
+
    const Tally t = TallySet(*s);
    const int totalSlots = t.equipped + t.inInventory + t.missing;

-    // Trim the Lua stack to just the tooltip self-arg so our internal
-    // method-call sequences don't accumulate the original args past
-    // their useful lifetime. `setName` was a `const char *` lifted out
-    // by ToString — Lua's strings are pinned by reference count, so
-    // dropping the string from the stack doesn't invalidate the
-    // pointer for the lifetime of this call.
-    Game::Lua::SetTop(L, 1);
-
-    // Header — set name, white. Doubles as the "ClearLines" boundary;
-    // SetText replaces line 1 and clears subsequent lines in vanilla.
-    SetText(L, s->name.c_str(), 1.0, 1.0, 1.0);
+    // Header — set name, white. Clear first so it lands as line 0
+    // (the clear resets the line count the add-line body indexes from).
+    reinterpret_cast<ClearTooltip_t>(Offsets::FUN_GAMETOOLTIP_CLEAR)(self);
+    AddColoredLine(self, s->name.c_str(), 1.0, 1.0, 1.0);

    // Body lines — try Blizzard's localized FORMAT_* globals first.
    // Same key names retail FrameXML uses (`ITEMS_VARIABLE_QUANTITY`,
    // `ITEMS_EQUIPPED`, ...); addons that need their own wording can
    // override by reassigning `_G[name]` at runtime. The fallbacks
    // only fire on servers stripped of the standard GlobalStrings.
-    AddLocalizedLineInt(L, "ITEMS_VARIABLE_QUANTITY", "%d items",
+    AddLocalizedLineInt(L, self, "ITEMS_VARIABLE_QUANTITY", "%d items",
                        totalSlots, 1.0, 1.0, 1.0);

    if (t.equipped > 0) {
-        AddLocalizedLineInt(L, "ITEMS_EQUIPPED", "%d equipped",
+        AddLocalizedLineInt(L, self, "ITEMS_EQUIPPED", "%d equipped",
                            t.equipped, 0.0, 1.0, 0.0); // green
    }
    if (t.inInventory > 0) {
-        AddLocalizedLineInt(L, "ITEMS_IN_INVENTORY", "%d in inventory",
+        AddLocalizedLineInt(L, self, "ITEMS_IN_INVENTORY", "%d in inventory",
                            t.inInventory, 1.0, 1.0, 1.0);
    }
    if (t.ignored > 0) {
-        AddLocalizedLineInt(L, "ITEM_SLOTS_IGNORED", "%d slots ignored",
+        AddLocalizedLineInt(L, self, "ITEM_SLOTS_IGNORED", "%d slots ignored",
                            t.ignored, 0.5, 0.5, 0.5); // gray
    }
    // Missing slots: list each by name using the itemID we stored at
@@ -255,18 +237,20 @@ int __fastcall Script_GameTooltipSetEquipmentSet(void *L) {
        Game::Lua::Call(L, 2, 1);
        const char *line = Game::Lua::ToString(L, -1);
        if (line != nullptr)
-            AddLine(L, line, 1.0, 0.0, 0.0); // red
+            AddColoredLine(self, line, 1.0, 0.0, 0.0); // red
        Game::Lua::SetTop(L, savedTop);
    }
    if (unnamedMissing > 0) {
        // Pre-itemID-format files or items the cache has no record of.
        // No Blizzard format global maps cleanly here; addons can
        // override with `_G.CLASSICAPI_EQUIPMENTSET_MISSING`.
-        AddLocalizedLineInt(L, "CLASSICAPI_EQUIPMENTSET_MISSING",
+        AddLocalizedLineInt(L, self, "CLASSICAPI_EQUIPMENTSET_MISSING",
                            "%d missing", unnamedMissing, 1.0, 0.0, 0.0);
    }

-    CallSelfNoArgs(L, "Show");
+    // Show ourselves — self is still at Lua stack index 1 (Script_Show
+    // reads it there). Retail's SetEquipmentSet shows internally too.
+    reinterpret_cast<ShowScript_t>(Offsets::FUN_SCRIPT_FRAME_SHOW)(L);
    return 0;
 }

@@ -46,6 +46,22 @@ struct ReservedName {
 ReservedName g_reserved[MAX_RESERVED];
 int g_reservedCount = 0;
 bool g_writesEnabled = false;
+// One-shot latch so a genuinely full event table (no NULL slot left to
+// claim) is logged once per session instead of silently dropping the
+// event — the failure mode that would otherwise rot unnoticed. Re-armed on
+// `/reload` (the table is rebuilt fresh). In practice this never triggers:
+// SuperWoW/nampower clamp the FrameXML table to 700 and the engine leaves
+// ~200 NULL gaps in the low range, dwarfing our ~46 reservations. The log is
+// purely a backstop if some future install somehow drains the gap pool.
+bool g_warnedTableFull = false;
+
+// One grow attempt per in-game table build. Reset in `PrepareForReload`
+// (the table is rebuilt fresh on every /reload + logout). See `Grow`.
+bool g_growLatched = false;
+// Debug: force a grow on the next table build regardless of headroom, so
+// the (otherwise dormant) grow path can actually be exercised in-game.
+// Armed by `_classicapi_ForceEventGrow`, consumed by the next `Grow`.
+bool g_forceGrowNext = false;

 // Engine's SStrDup at `FUN_STORM_SSTRDUP` — uses `SMemAlloc` internally
 // and is exactly what the engine itself does when filling event table
@@ -61,14 +77,38 @@ char *SStrDup(const char *s) {
    return fn(s, __FILE__, __LINE__);
 }

-// Walk the engine's event table from the END looking for a NULL-name
+// Storm allocator/free — the same pair the engine uses for the event-table
+// buffer (see RebuildEventTable), so its reload teardown `SMemFree`s our
+// grown buffer exactly as its own. Both `__stdcall`, 4 args (`ret 0x10`).
+// SMemAlloc flag bit 8 zero-fills (matching SetEventCount's fresh entries).
+void *SMemAlloc(unsigned size) {
+    using SMemAlloc_t = void *(__stdcall *)(unsigned size, const char *file,
+                                            int line, int flags);
+    auto fn = reinterpret_cast<SMemAlloc_t>(Offsets::FUN_STORM_SMEMALLOC);
+    return fn(size, __FILE__, __LINE__, 8 /* zero-fill */);
+}
+void SMemFree(void *ptr) {
+    using SMemFree_t = int(__stdcall *)(void *ptr, const char *file, int line,
+                                        int flags);
+    auto fn = reinterpret_cast<SMemFree_t>(Offsets::FUN_STORM_SMEMFREE);
+    fn(ptr, __FILE__, __LINE__, 0);
+}
+
+// Walk the engine's event table from the LOW end looking for a NULL-name
 // slot. The bulk-init at `0x0051AB30` leaves ~200 NULL gaps scattered
 // through the 548-slot input names array (it only writes ~350 of the
-// slots explicitly; the rest stay zero-initialized from .data). UP
-// and DOWN walks both find these gaps — we go DOWN for convention with
-// VanillaMinimapTracking and so the dump in `_classicapi_DumpAllEvents`
-// shows our events grouped at the tail, visually distinct from engine
-// events.
+// slots explicitly; the rest stay zero-initialized from .data) — a big
+// contiguous hole around 42..106 alone dwarfs our reservation count.
+//
+// We go LOW (ascending) deliberately: SuperWoW and nampower own the HIGH
+// range (fixed event IDs 549..655, and they destructively clamp the table
+// to 700), and other claim-based DLLs (VanillaMinimapTracking) also walk
+// from the tail — so the top is the contested end. Claiming from the low
+// engine gaps keeps us entirely out of their way and independent of their
+// clamp / hook order. The engine's ~200 low NULL gaps dwarf our ~46
+// reservations, so a free slot is essentially always available; the
+// skip-occupied invariant keeps this safe against future engine additions
+// regardless of direction.
 int TryClaim(const char *eventName) {
    if (!g_writesEnabled)
        return -1;
@@ -76,7 +116,7 @@ int TryClaim(const char *eventName) {
    const int count = *reinterpret_cast<int *>(Offsets::VAR_EVENT_TABLE_COUNT);
    if (base == nullptr || count <= 0)
        return -1;
-    for (int i = count - 1; i >= 0; --i) {
+    for (int i = 0; i < count; ++i) {
        auto **namePtr = reinterpret_cast<const char **>(
            base + i * Offsets::EVENT_ENTRY_STRIDE +
            Offsets::OFF_EVENT_ENTRY_NAME);
@@ -88,9 +128,119 @@ int TryClaim(const char *eventName) {
            return i;
        }
    }
+    // Writes are enabled and the table is valid, but every slot is taken —
+    // real capacity exhaustion despite `Grow`. Warn once so it's diagnosable.
+    if (!g_warnedTableFull) {
+        g_warnedTableFull = true;
+        Debug::Log::Printf(
+            "[event] table full (%d slots, no NULL left) — cannot claim '%s'"
+            " and any further custom events; even Grow couldn't make room.",
+            count, eventName ? eventName : "?");
+    }
    return -1;
 }

+// On-demand event-table grow. Correctly TIMED: called once per in-game
+// table build from `RetryClaims` (the `frame:RegisterEvent` hook), on the
+// FIRST such call — which is AFTER `RebuildEventTable` has built the fresh
+// table (frames can only register once it exists) but BEFORE any frame has
+// joined a chain (it's the first registration, and we run before the
+// original registers it). So every chain is still an empty self-sentinel,
+// and the buffer can be moved safely.
+//
+// (This is what the removed `EnsureCapacity` got wrong: it ran from
+// `LoadScriptFunctions_h`, BEFORE `RebuildEventTable`, so it saw the stale
+// previous/glue table and always aborted — it never actually grew. The
+// realloc logic itself was fine; only the timing was broken.)
+//
+// Grows only when the engine's low NULL gaps are fewer than our
+// reservations — which never happens in practice (~200 gaps vs ~46
+// reservations), so this is a dormant durability valve. `g_forceGrowNext`
+// (debug) forces it so the path can be exercised. It grows by reallocating
+// the entry buffer with the engine's own Storm allocator and swapping the
+// `{cap@0, count@4, base@8}` globals at `0x00CEEF60` — bypassing
+// SetEventCount's destructive `= 700` clamp. All consumers (RegisterEvent,
+// the dispatcher, SuperWoW, nampower) read the base pointer fresh, so the
+// swap is picked up everywhere; the engine's reload teardown `SMemFree`s
+// our buffer and frees the (shared) name strings via its per-entry helper,
+// exactly as its own.
+void Grow() {
+    if (g_growLatched || !g_writesEnabled)
+        return;
+    g_growLatched = true; // one attempt per build, whether or not it grows
+
+    const int count = *reinterpret_cast<int *>(Offsets::VAR_EVENT_TABLE_COUNT);
+    auto *base = *reinterpret_cast<uint8_t **>(Offsets::VAR_EVENT_TABLE_BASE_PTR);
+    if (base == nullptr || count <= 0 || g_reservedCount <= 0)
+        return;
+
+    int nulls = 0;
+    for (int i = 0; i < count; ++i)
+        if (*reinterpret_cast<const char *const *>(
+                base + i * Offsets::EVENT_ENTRY_STRIDE +
+                Offsets::OFF_EVENT_ENTRY_NAME) == nullptr)
+            ++nulls;
+
+    const bool force = g_forceGrowNext;
+    g_forceGrowNext = false;
+    if (nulls >= g_reservedCount && !force)
+        return; // plenty of room — the common (only) real case
+
+    // Growing moves the buffer, invalidating every entry's self-referential
+    // list anchor, so it's safe ONLY while all chains are empty. We run
+    // before the first registration, so that holds — but VERIFY it (a live
+    // chain means someone registered earlier via a path we didn't intercept;
+    // moving the buffer would corrupt their subscription). Abort if so and
+    // fall back to claim-NULL.
+    for (int i = 0; i < count; ++i) {
+        const uint32_t head = *reinterpret_cast<const uint32_t *>(
+            base + i * Offsets::EVENT_ENTRY_STRIDE + Offsets::OFF_EVENT_ENTRY_HEAD);
+        if (head != 0 && (head & 1) == 0) { // populated chain (not 0 / sentinel)
+            Debug::Log::Printf(
+                "[event] grow aborted — chain live at slot %d (not first-reg)", i);
+            return;
+        }
+    }
+
+    constexpr int kMargin = 16;
+    const int deficit = (nulls < g_reservedCount) ? (g_reservedCount - nulls) : 0;
+    const int newCount = count + deficit + kMargin;
+    auto *newBuf = static_cast<uint8_t *>(
+        SMemAlloc(static_cast<unsigned>(newCount) * Offsets::EVENT_ENTRY_STRIDE));
+    if (newBuf == nullptr)
+        return; // alloc failed — keep the old table; claiming still works
+
+    // Rebuild each entry at its NEW address, mirroring SetEventCount's own
+    // per-entry init: copy the name pointer (shared string, not duplicated);
+    // the `+0x04` field stays 0 (zero-filled, matching the engine); re-init
+    // the anchor as an empty self-sentinel at the new location. Old entries
+    // past the copy and all new entries are already zero-filled + get fresh
+    // anchors. Safe because every chain is empty.
+    for (int i = 0; i < newCount; ++i) {
+        auto *e = reinterpret_cast<uint32_t *>(
+            newBuf + i * Offsets::EVENT_ENTRY_STRIDE);
+        if (i < count) // copy name; new slots stay null
+            e[0] = *reinterpret_cast<const uint32_t *>(
+                base + i * Offsets::EVENT_ENTRY_STRIDE);
+        const uint32_t anchor = static_cast<uint32_t>(
+            reinterpret_cast<uintptr_t>(&e[2])); // entry+0x08
+        e[2] = anchor;      // self-referential list anchor
+        e[3] = anchor | 1;  // empty-chain sentinel head (+0x0C)
+    }
+
+    // Publish base BEFORE count so the globals never advertise more entries
+    // than the buffer holds. Then free the OLD buffer only — the name
+    // strings live on in newBuf and are freed by the reload teardown.
+    *reinterpret_cast<uint8_t **>(Offsets::VAR_EVENT_TABLE_BASE_PTR) = newBuf;
+    *reinterpret_cast<int *>(Offsets::VAR_EVENT_TABLE_CAP) = newCount;
+    *reinterpret_cast<int *>(Offsets::VAR_EVENT_TABLE_COUNT) = newCount;
+    SMemFree(base);
+
+    Debug::Log::Printf("[event] grew table %d -> %d (%d NULL, %d reserved%s)",
+                       count, newCount, nulls, g_reservedCount,
+                       force ? ", FORCED" : "");
+}
+
 } // namespace

 AutoReserve::AutoReserve(const char *name) {
@@ -133,6 +283,11 @@ int LookupByName(const char *name) {
 }

 void RetryClaims() {
+    // Grow the table first if the low gap pool is short (dormant valve).
+    // Runs at most once per table build; on the first call every chain is
+    // still empty (this is the first registration), which is the only safe
+    // time to move the buffer.
+    Grow();
    for (int i = 0; i < g_reservedCount; ++i) {
        if (g_reserved[i].slot < 0)
            g_reserved[i].slot = TryClaim(g_reserved[i].name);
@@ -145,6 +300,8 @@ void PrepareForReload() {
    for (int i = 0; i < g_reservedCount; ++i)
        g_reserved[i].slot = -1;
    g_writesEnabled = false;
+    g_warnedTableFull = false;  // fresh table after the rebuild — re-arm
+    g_growLatched = false;      // re-arm the one-shot grow for the new table
 }

 // Diagnostic Lua functions — registered via the auto-register pattern
@@ -190,10 +347,24 @@ int __fastcall Script_DumpAllEvents(void *) {
    return 0;
 }

+// `_classicapi_ForceEventGrow()` — arms a one-shot forced table grow for
+// the NEXT in-game table build, so the (otherwise dormant) grow path can be
+// exercised: call it, then `/reload`. The grow fires at the first
+// `RegisterEvent` after the rebuild (chains still empty) and logs
+// `[event] grew table N -> M (..., FORCED)`. Diagnostic only.
+int __fastcall Script_ForceEventGrow(void *) {
+    g_forceGrowNext = true;
+    Debug::Log::Printf(
+        "[event] force-grow armed — /reload to trigger it on the next build");
+    return 0;
+}
+
 void RegisterDiagnostics() {
    Game::Lua::RegisterGlobalFunction("_classicapi_DumpSlot", &Script_DumpSlot);
    Game::Lua::RegisterGlobalFunction("_classicapi_DumpAllEvents",
                                      &Script_DumpAllEvents);
+    Game::Lua::RegisterGlobalFunction("_classicapi_ForceEventGrow",
+                                      &Script_ForceEventGrow);
 }

 const Game::ModuleAutoRegister _autoreg{&RegisterDiagnostics};
@@ -0,0 +1,98 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `GetFramesRegisteredForEvent(event)` → the Frame objects currently
+// subscribed to `event`, returned as multiple return values (matching
+// modern WoW's vararg signature — not a table). Empty result set returns
+// nothing.
+//
+// The engine already keeps exactly this list: every `frame:RegisterEvent`
+// appends the frame to a subscriber chain hanging off the matching event
+// table entry. We find the entry by name (same table `Event::Custom`
+// walks), then walk the chain the same way `Frame::RegisterEvent`
+// (`FUN_00702140`) does — node next at `+0x04`, subscriber frame at
+// `+0x08`, with a low-bit-set / null value marking the end sentinel — and
+// push each frame via the shared `UI::FrameObject::Push` so callers get
+// the canonical wrapper table (real frame methods, `:GetName()`, etc.).
+//
+// Event names resolve through `Event::Custom::LookupByName`, so this also
+// works for our `AutoReserve`-claimed custom events, not just engine ones.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "event/Custom.h"
+#include "ui/FrameObject.h"
+
+#include <cstdint>
+
+namespace Event::Registered {
+
+namespace {
+
+int __fastcall Script_GetFramesRegisteredForEvent(void *L) {
+    if (!Game::Lua::IsString(L, 1))
+        return 0;
+    const char *event = Game::Lua::ToString(L, 1);
+    if (event == nullptr)
+        return 0;
+
+    const int slot = Event::Custom::LookupByName(event);
+    if (slot < 0)
+        return 0;
+
+    auto *base = *reinterpret_cast<uint8_t **>(Offsets::VAR_EVENT_TABLE_BASE_PTR);
+    if (base == nullptr)
+        return 0;
+
+    const uint8_t *entry = base + slot * Offsets::EVENT_ENTRY_STRIDE;
+    const uintptr_t head = *reinterpret_cast<const uintptr_t *>(
+        entry + Offsets::OFF_EVENT_ENTRY_HEAD);
+
+    // First pass: count subscribers so we can reserve stack up front — an
+    // event with many registered frames would otherwise risk overflowing
+    // the default Lua stack slack as we push.
+    int count = 0;
+    for (uintptr_t node = head; (node & 1) == 0 && node != 0;
+         node = *reinterpret_cast<const uintptr_t *>(
+             node + Offsets::OFF_EVENT_NODE_NEXT)) {
+        if (*reinterpret_cast<void *const *>(node + Offsets::OFF_EVENT_NODE_FRAME))
+            ++count;
+    }
+    if (count == 0)
+        return 0;
+    Game::Lua::CheckStack(L, count);
+
+    int pushed = 0;
+    for (uintptr_t node = head; (node & 1) == 0 && node != 0;
+         node = *reinterpret_cast<const uintptr_t *>(
+             node + Offsets::OFF_EVENT_NODE_NEXT)) {
+        void *frame = *reinterpret_cast<void *const *>(
+            node + Offsets::OFF_EVENT_NODE_FRAME);
+        if (frame != nullptr) {
+            UI::FrameObject::Push(L, frame);
+            ++pushed;
+        }
+    }
+    return pushed;
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("GetFramesRegisteredForEvent",
+                                      &Script_GetFramesRegisteredForEvent);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Event::Registered
@@ -282,7 +282,25 @@ void RegisterLuaFunctions() {
                                     &Script_C_FriendList_IsWhoQueryPending);
 }

+// Clear transient /who state on every in-game Lua (re)build — login OR
+// /reload. The DLL survives a logout→character-select→login, so a query
+// whose SMSG_WHO response never crossed that boundary would otherwise leave
+// g_inFlight stuck (IsWhoQueryPending() wrongly true for the next character)
+// and our VAR_WHO_TO_UI_FLAG override forced on (routing the next
+// character's unrelated /who to the WhoList). ResetIfStuck only heals this
+// lazily on a *subsequent* send; a fresh-init reset makes every character
+// start clean. RestoreFlagIfOwned puts the engine flag back to the value we
+// snapshotted before overriding. ModuleAutoRegister fires per login and per
+// /reload, before any addon runs, so this always precedes a new burst.
+void ResetState() {
+    g_inFlight = 0;
+    RestoreFlagIfOwned();
+    g_haveSent = false;
+    g_lastSendTick = 0;
+}
+
 const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+const Game::ModuleAutoRegister _resetOnInit{&ResetState};

 } // namespace

@@ -30,17 +30,23 @@
 //   (dispatcher leaves `_G.arg<N>` alone when no codes are parsed),
 //   restore.
 // - `NAME_PLATE_UNIT_ADDED` / `_REMOVED` — `arg1` is the
-//   `"nameplateN"` unit token (formatted from the plate's index in
-//   `g_orderedGUIDs` at fire time). The token resolves to the unit
-//   via the `nameplateN`-aware token resolver in `unit/TokenExtensions.cpp`
-//   — addons can pass it straight to `UnitName`, `UnitGUID`, etc.,
-//   or to `GetNamePlateForUnit` for the frame.
+//   `"nameplateN"` unit token (`N` = the plate's assigned slot). The token
+//   resolves to the unit via the `nameplateN`-aware token resolver in
+//   `unit/TokenExtensions.cpp` — addons can pass it straight to `UnitName`,
+//   `UnitGUID`, etc., or to `GetNamePlateForUnit` for the frame.
+//
+// Slot assignment (retail-exact): a plate keeps its slot for its whole
+// lifetime, so surviving plates are NEVER renumbered when another is removed
+// — a removal frees the slot and the next new plate reuses the lowest free
+// one. `g_slots` is therefore a sparse array (freed middle slots read back as
+// the empty GUID 0 until reused), not a compacting list.

 #include "Game.h"
 #include "Offsets.h"
 #include "event/Custom.h"
 #include "nameplate/Walk.h"
 #include "tick/WorldTick.h"
+#include "unit/TokenObserver.h"

 #include <algorithm>
 #include <cstdint>
@@ -84,13 +90,27 @@ std::unordered_map<uint64_t, const void *> g_currentTickPlates;
 // then tops out as pool reuse covers all subsequent shows.
 std::unordered_set<const void *> g_seenPlates;

-// Ordered list of currently-visible nameplate GUIDs, in
-// creation-order. Append on UNIT_ADDED, erase on UNIT_REMOVED. Backs
-// the `nameplateN` unit-token resolver in `unit/TokenExtensions.cpp`. Order
-// matches modern WoW semantics: stable for the lifetime of each
-// plate, gaps when middle plates vanish (until the next REMOVED
-// shifts later entries down).
-std::vector<uint64_t> g_orderedGUIDs;
+// Nameplate token slots: slot `i` (0-based) holds the GUID assigned to
+// `nameplate(i+1)`, or 0 when free. Retail-exact slot assignment — a plate
+// keeps its slot for its whole lifetime (survivors are never renumbered),
+// UNIT_REMOVED frees the slot (sets 0), and a new plate reuses the lowest
+// free slot. Sparse: freed middle slots stay as gaps until reused. Backs the
+// `nameplateN` unit-token resolver in `unit/TokenExtensions.cpp`.
+std::vector<uint64_t> g_slots;
+
+// Assign `guid` the lowest free slot, reusing a vacated one when present and
+// growing the array only when every slot is occupied. Returns the 0-based
+// slot. Never shifts an existing entry.
+int AssignSlot(uint64_t guid) {
+    for (size_t i = 0; i < g_slots.size(); ++i) {
+        if (g_slots[i] == 0) {
+            g_slots[i] = guid;
+            return static_cast<int>(i);
+        }
+    }
+    g_slots.push_back(guid);
+    return static_cast<int>(g_slots.size() - 1);
+}

 // Fire `eventName` with a pre-formatted string as `arg1`. The engine
 // dispatcher's `%s` format code pushes the C string into `_G.arg1`
@@ -114,6 +134,32 @@ const char *FormatNamePlateToken(char *buf, size_t bufSize, int oneBasedIndex) {
    return buf;
 }

+// Descriptor-field observer callback — makes unit events (UNIT_HEALTH,
+// UNIT_AURA, …) fire with the `"nameplateN"` token, so a nameplated unit is a
+// first-class unit-event source exactly like a party member. Registered per
+// nameplate GUID via `Unit::TokenObserver` on UNIT_ADDED, unregistered on
+// UNIT_REMOVED. We reverse-look-up the changed GUID's slot at fire time
+// (cheap; the array is small) so the token reflects its current assignment.
+// The event id is the field index (`fieldOffset >> 2`); the engine fires every
+// unit event as "%s" + token, so we match. A GUID no longer in any slot
+// (removal raced this field change) simply drops the fire.
+int __fastcall NamePlateFieldCb(uint32_t fieldOffset, uint32_t /*size*/,
+                                uint32_t guidLo, uint32_t guidHi,
+                                const uint32_t * /*oldValue*/, void * /*userArg*/) {
+    const uint64_t guid =
+        (static_cast<uint64_t>(guidHi) << 32) | static_cast<uint64_t>(guidLo);
+    auto it = std::find(g_slots.begin(), g_slots.end(), guid);
+    if (it == g_slots.end())
+        return 1;
+    const int oneBased = static_cast<int>(it - g_slots.begin()) + 1;
+    char tokenBuf[24];
+    FormatNamePlateToken(tokenBuf, sizeof tokenBuf, oneBased);
+    using Fire_t = void(__cdecl *)(int eventId, const char *fmt, ...);
+    reinterpret_cast<Fire_t>(static_cast<uintptr_t>(Offsets::FUN_FIRE_EVENT))(
+        static_cast<int>(fieldOffset >> 2), "%s", tokenBuf);
+    return 1;
+}
+
 // Fire `eventName` with the nameplate `Frame` set as `_G.arg1`.
 // `FUN_FIRE_EVENT`'s format-string parser only handles primitive
 // types, but it only mutates `_G.arg<N>` for codes it actually
@@ -178,38 +224,42 @@ void OnWorldTick() {

    // Fire CREATED (with the Frame as arg1) for never-before-seen
    // frame pointers; ADDED (with `"nameplateN"` token as arg1) for
-    // GUIDs not in last tick's snapshot. New entries are appended to
-    // the ordered list *before* firing so the token resolves to the
-    // newly-added plate during the event handler.
+    // GUIDs not in last tick's snapshot. The slot is assigned *before*
+    // firing so the token resolves to the newly-added plate during the
+    // event handler.
    for (const auto &kv : g_currentTickPlates) {
        if (g_seenPlates.insert(kv.second).second)
            FireWithFrame(kEventCreated, const_cast<void *>(kv.second));
        if (g_lastTickPlates.find(kv.first) == g_lastTickPlates.end()) {
-            g_orderedGUIDs.push_back(kv.first);
+            const int slot = AssignSlot(kv.first);
+            // Watch this unit's fields so UNIT_HEALTH/UNIT_AURA/… fire with
+            // its "nameplateN" token (the engine only watches its own
+            // target/party/raid tokens, not nameplates).
+            Unit::TokenObserver::Register(kv.first, &NamePlateFieldCb);
            char tokenBuf[24];
            FireWithString(kEventUnitAdded,
-                FormatNamePlateToken(tokenBuf, sizeof tokenBuf,
-                                     static_cast<int>(g_orderedGUIDs.size())));
+                FormatNamePlateToken(tokenBuf, sizeof tokenBuf, slot + 1));
        }
    }

-    // Fire REMOVED for GUIDs in last tick's snapshot but not current.
-    // We compute the token from the position *before* erasing so the
-    // event payload reflects the slot the unit just vacated; the
-    // handler can still resolve the token to the unit via
-    // `g_orderedGUIDs[slot]` during dispatch. Later plates shift down
-    // when we erase — matches modern semantics.
+    // Fire REMOVED for GUIDs in last tick's snapshot but not current. The
+    // slot is *freed* (set 0), not erased, so surviving plates keep their
+    // index (retail-exact — no shift); the next ADD reuses it. Token is
+    // computed before freeing so the payload names the slot just vacated.
+    // Trailing empties are trimmed so the array tracks the high-water mark.
    for (const auto &kv : g_lastTickPlates) {
        if (g_currentTickPlates.find(kv.first) == g_currentTickPlates.end()) {
-            auto it = std::find(g_orderedGUIDs.begin(), g_orderedGUIDs.end(),
-                                kv.first);
-            if (it == g_orderedGUIDs.end())
+            auto it = std::find(g_slots.begin(), g_slots.end(), kv.first);
+            if (it == g_slots.end())
                continue;
-            const int oneBased = static_cast<int>(it - g_orderedGUIDs.begin()) + 1;
+            const int oneBased = static_cast<int>(it - g_slots.begin()) + 1;
            char tokenBuf[24];
            FireWithString(kEventUnitRemoved,
                FormatNamePlateToken(tokenBuf, sizeof tokenBuf, oneBased));
-            g_orderedGUIDs.erase(it);
+            Unit::TokenObserver::Unregister(kv.first, &NamePlateFieldCb);
+            *it = 0; // free the slot (no shift of survivors)
+            while (!g_slots.empty() && g_slots.back() == 0)
+                g_slots.pop_back();
        }
    }

@@ -230,24 +280,35 @@ static const Tick::WorldTick::AutoSubscribe _tickSub{&OnWorldTick};
 // suppress every refire, and the freshly-built wrapper would lack
 // the addon's `.nameplate` field.
 //
-// `g_orderedGUIDs` is also cleared so the post-reload token indices
-// start at `nameplate1` again, matching the order plates re-fire in.
+// `g_slots` is also cleared so post-reload token slots start fresh.
 void PrepareForReload() {
    g_seenPlates.clear();
    g_lastTickPlates.clear();
-    g_orderedGUIDs.clear();
+    // Objects survive a /reload, so their observer nodes do too. The first
+    // post-reload tick re-fires ADDED and re-registers, which would stack a
+    // second observer per field (the registrar never dedups) → double events.
+    // Tear ours down here so re-registration starts clean (skip free slots).
+    for (uint64_t guid : g_slots)
+        if (guid != 0)
+            Unit::TokenObserver::Unregister(guid, &NamePlateFieldCb);
+    g_slots.clear();
 }

 // Exposed via `nameplate/Walk.h` so the `nameplateN` token resolver
 // in `unit/TokenExtensions.cpp` can map an index to a GUID without seeing
-// the internal vector.
+// the internal array. Returns 0 for an out-of-range OR currently-free slot.
 uint64_t GetGUIDByIndex(int oneBased) {
    if (oneBased <= 0)
        return 0;
    const size_t idx = static_cast<size_t>(oneBased - 1);
-    if (idx >= g_orderedGUIDs.size())
+    if (idx >= g_slots.size())
        return 0;
-    return g_orderedGUIDs[idx];
+    return g_slots[idx]; // 0 when the slot is free
 }

+// Number of slots (1-based max index). Because the slot array is SPARSE,
+// callers that iterate all plates must scan `1..GetSlotCount()` and skip the
+// slots where `GetGUIDByIndex` returns 0 — they can't stop at the first gap.
+int GetSlotCount() { return static_cast<int>(g_slots.size()); }
+
 } // namespace NamePlate::Events
@@ -56,6 +56,7 @@
 #include "Offsets.h"
 #include "guid/Guid.h"
 #include "nameplate/Walk.h"
+#include "ui/FrameObject.h"

 #include <cstdint>

@@ -66,9 +67,6 @@ namespace {
 using NamePlate::Walk::ForEachNamePlatedUnit;
 using NamePlate::Walk::kOffUnitNamePlate;

-using LuaRawGetI_t = void(__fastcall *)(void *L, int idx, int n);
-using ScriptRegister_t = void(__fastcall *)(void *this_, void *edx_unused,
-                                              const char *name);
 using TokenToGUID_t = uint64_t(__fastcall *)(const char *token);
 using ResolveByGUID_t = void *(__fastcall *)(int type, const char *debugName,
                                              uint32_t guidLo, uint32_t guidHi,
@@ -115,70 +113,13 @@ static int __fastcall Script_GetNamePlateGUIDs(void *L) {
 // frame-push path. Internal callers (Script_GetNamePlates etc.) call
 // it through the unqualified name (they live in the same namespace).
 //
-// Delegate wrapper construction to the engine's own
-// `FrameScript_Object::ScriptRegister`. First call for a never-seen
-// nameplate builds a `{[0] = lightuserdata}` table with the
-// framescript metatable, `luaL_ref`s it into the registry, and
-// writes the refkey to `nameplate + 0x08` (`OFF_COBJECT_LUA_REGISTRY_REF`).
-// Subsequent calls find a populated refkey and just rawgeti.
-//
-// Why delegate instead of building our own wrapper:
-//
-// - **Single source of truth.** Every code path that pushes this
-//   frame — ours via this function, addons' `CreateFrame("Type",
-//   "name", plate)` extracting the parent, the engine's own internal
-//   pushers — funnels through `rawgeti(REGISTRY, plate+0x08)` and
-//   gets the same Lua table. Earlier "build our own wrapper +
-//   `luaL_ref` it" approach kept a side cache, but pfUI's
-//   `CreateFrame("Button", "name", parent)` inside `NAME_PLATE_CREATED`
-//   ends up causing the engine to register the parent itself —
-//   the engine's wrapper diverges from ours, and later
-//   `GetNamePlateForUnit` calls return the engine's bare wrapper
-//   instead of our decorated one. Addon fields on the wrapper
-//   (`plate.nameplate = styledButton`) disappear from the API's
-//   perspective even though they still exist on the orphaned
-//   table.
-//
-// - **Refcount-pinning is benign here.** `ScriptRegister`
-//   unconditionally increments `nameplate + 0x04`, which normally
-//   keeps the engine from GC-ing the CObject. Nameplates are
-//   pool-managed and never destroyed during a session, so pinning
-//   doesn't actually leak anything. We call `ScriptRegister` at
-//   most once per nameplate pointer (gated by `refKey <= 0`), so
-//   the refcount tops out at one increment per pool slot.
-//
-// Defensive fallback: if the registry slot exists but isn't a table
-// any more (some other code freed it), we re-register. This shouldn't
-// happen in practice — engines only unref on frame destruction —
-// but a stale type check keeps callers from ever seeing a non-table.
+// Thin wrapper over the shared `UI::FrameObject::Push` — nameplates and
+// chat bubbles are both engine-created-in-C++ `CSimpleFrame`s that need
+// the same lazy `ScriptRegister` → `rawgeti` push so addons get the
+// engine's canonical wrapper (see that helper for the pfUI-divergence
+// rationale that motivated delegating to the engine).
 void PushNamePlateFrame(void *L, void *nameplate) {
-    auto rawgeti = reinterpret_cast<LuaRawGetI_t>(
-        Offsets::FUN_FRAMESCRIPT_PUSH_OBJECT);
-    auto scriptRegister = reinterpret_cast<ScriptRegister_t>(
-        static_cast<uintptr_t>(Offsets::FUN_FRAMESCRIPT_OBJECT_SCRIPT_REGISTER));
-
-    int refKey = *reinterpret_cast<const int *>(
-        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
-    if (refKey <= 0) {
-        scriptRegister(nameplate, nullptr, nullptr);
-        refKey = *reinterpret_cast<const int *>(
-            static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
-    }
-
-    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
-    if (Game::Lua::Type(L, -1) == Game::Lua::TYPE_TABLE)
-        return;
-    Game::Lua::SetTop(L, -2);
-
-    // Slot got freed somewhere — re-register to rebuild a fresh
-    // wrapper and slot. Zero the refcount so `ScriptRegister`
-    // re-enters its build branch.
-    *reinterpret_cast<int *>(
-        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REFCOUNT) = 0;
-    scriptRegister(nameplate, nullptr, nullptr);
-    refKey = *reinterpret_cast<const int *>(
-        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
-    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
+    UI::FrameObject::Push(L, nameplate);
 }

 // GUID → nameplate Frame pushed on stack. Pushes nil if the GUID
@@ -37,12 +37,18 @@ void PushNamePlateFrame(void *L, void *nameplate);
 namespace NamePlate::Events {

 // Returns the GUID currently bound to `nameplateN` (1-based, matching
-// the modern Lua token form). `0` means no nameplate at that index.
-// Backed by the per-tick UNIT_ADDED / UNIT_REMOVED diff in
-// `Events.cpp` — order is creation-order (append on ADDED, erase on
-// REMOVED), stable within a frame.
+// the modern Lua token form). `0` means the slot is out of range OR
+// currently free. Backed by the retail-exact slot assignment in
+// `Events.cpp`: a plate keeps its slot for its lifetime and freed slots
+// are reused, so the slot array is SPARSE (gaps read back as 0).
 uint64_t GetGUIDByIndex(int oneBased);

+// Highest slot index in use (1-based). Callers that iterate every plate
+// must loop `1..GetSlotCount()` and skip indices where `GetGUIDByIndex`
+// returns 0 — they must NOT stop at the first gap, since the array is
+// sparse.
+int GetSlotCount();
+
 // Clears the per-tick diff state (seen pointers, last tick's
 // snapshot, ordered GUID list) so the post-`/reload` tick refires
 // CREATED + UNIT_ADDED for every currently-visible plate. Called
@@ -0,0 +1,55 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `GetPlayerFacing()` → facing angle of the player in radians (0 =
+// north/+Y in WoW's world convention, increasing counter-clockwise), or
+// nothing when there's no player (glue / loading). Vanilla 1.12 doesn't
+// ship it (only character-create/select facing exist), but it's the
+// missing half that makes our backported `TargetDirectionEnemy/Friend`
+// usable — a caller passes `GetPlayerFacing()` to target what's in front.
+//
+// The orientation is a field in the player's CGUnit movement block
+// (`OFF_UNIT_FACING` = +0x9C4), sitting just past the {x,y,z} position at
+// +0x9B8. The `GetPosition` virtual only copies x/y/z into a caller buffer,
+// so the facing is read off the object directly.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "unit/Position.h"
+
+#include <cstdint>
+
+namespace Player::Facing {
+
+namespace {
+
+int __fastcall Script_GetPlayerFacing(void *L) {
+    void *player = Unit::Position::ResolveToken("player");
+    if (player == nullptr)
+        return 0;
+
+    const float facing = *reinterpret_cast<const float *>(
+        static_cast<const uint8_t *>(player) + Offsets::OFF_UNIT_FACING);
+    Game::Lua::PushNumber(L, static_cast<double>(facing));
+    return 1;
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("GetPlayerFacing", &Script_GetPlayerFacing);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Player::Facing
@@ -91,6 +91,7 @@ using GetDuration_t = int(__fastcall *)(const uint8_t *spellRecord, int unit, in
 constexpr int OFF_NAME = 0x1E0;            // localized name[9]
 constexpr int OFF_ICON_ID = 0x1D4;         // -> SpellIcon.dbc
 constexpr int OFF_ATTRIBUTES = 0x18;       // u32 Attributes flags
+constexpr int OFF_ATTRIBUTES_EX2 = 0x24;   // u32 AttributesEx2 flags
 constexpr int OFF_SUBRECORD_VALUE = 0x04;  // SpellIcon path field

 // SPELL_ATTR_TRADESPELL — set on profession recipe casts (enchant,
@@ -99,6 +100,12 @@ constexpr int OFF_SUBRECORD_VALUE = 0x04;  // SpellIcon path field
 // there, +0x18 here — the bit value is the same across builds).
 constexpr uint32_t SPELL_ATTR_TRADESPELL = 0x20;

+// SPELL_ATTR_RANGED — every ranged ability carries it; the server adds a
+// flat +500ms "aim time" to these (SpellEntry::GetCastTime). Auto-repeat
+// shots (Auto Shot / Shoot, AttributesEx2 bit 0x20) are the one exclusion.
+constexpr uint32_t SPELL_ATTR_RANGED = 0x2;
+constexpr uint32_t SPELL_ATTR_EX2_AUTOREPEAT = 0x20;
+
 struct TrackedSpell {
    int spellID; // 0 = not casting / channeling
    int startMs;
@@ -163,8 +170,30 @@ void *Resolve(const char *token) {
 // matches the engine's cast bar exactly — including talents like a Mage's
 // faster casts. Unit arg 0 = local player; flag 0 clamps negatives to 0.
 int CastTimeMs(int spellID) {
-    return static_cast<int>(
+    int ms = static_cast<int>(
        reinterpret_cast<GetCastTime_t>(Offsets::FUN_GET_CAST_TIME)(spellID, 0, 0));
+    // FUN_006e3340 (also the spell tooltip's cast-time source) does NOT add the
+    // flat +500ms "aim time" the server applies to ranged, non-autorepeat
+    // spells — SpellEntry::GetCastTime does `castTime += 500` for
+    // SPELL_ATTR_RANGED. So our zero-latency prediction runs ~500ms short of
+    // the server for Volley / Aimed Shot / Multi-Shot; the confirming
+    // SMSG_SPELL_START then snaps the bar out ~1 RTT later. Mirror the server
+    // here so the prediction is right from frame 1 (only for spells that
+    // already have a cast time — instant ranged abilities that the server
+    // gives a 500ms aim time still surface through the packet path). The
+    // cast-time reconcile in HandleSpellStart remains the backstop.
+    if (ms > 0) {
+        const uint8_t *rec = Spell::Lookup::RecordForID(spellID);
+        if (rec != nullptr) {
+            const uint32_t attr =
+                *reinterpret_cast<const uint32_t *>(rec + OFF_ATTRIBUTES);
+            const uint32_t attrEx2 =
+                *reinterpret_cast<const uint32_t *>(rec + OFF_ATTRIBUTES_EX2);
+            if ((attr & SPELL_ATTR_RANGED) && !(attrEx2 & SPELL_ATTR_EX2_AUTOREPEAT))
+                ms += 500;
+        }
+    }
+    return ms;
 }

 // Effective channel duration (ms) for the local player, 0 if none. Uses
@@ -407,13 +436,26 @@ void HandleSpellStart(uint64_t caster, int spellID, uint32_t castTime) {
        // Spell_C_CastSpell at `spellID == VAR_CURRENT_CAST_SPELL`, so the
        // client path (FUN_CAST_START_SET hook) never fires for them — this
        // server packet is the only signal. Dedup against a fresh client stamp
-        // (same spell, started within ~latency) so a normal cast's confirming
-        // packet doesn't restart its bar; otherwise it's a chained recast the
+        // (same spell, started within ~latency): a normal cast's confirming
+        // packet mustn't RESTART its bar; otherwise it's a chained recast the
        // client bailed on — take it, and flag it so the VAR==0 poll (which
        // never saw it) won't clear it.
        if (g_cast.spellID == spellID && now < g_cast.endMs &&
-            now - g_cast.startMs < kCastStartDedupMs)
+            now - g_cast.startMs < kCastStartDedupMs) {
+            // Confirming packet. Keep startMs (no visual restart), but SNAP the
+            // end time to the server's authoritative castTime. The client stamp
+            // came from FUN_006e3340, which folds in the caster's cast-speed /
+            // ranged-haste multiplier (descriptor +0x22c) — right for spells the
+            // server also hastes (Aimed/Multi-Shot), WRONG for ones it doesn't.
+            // Volley is the case that surfaced this: not channeled, not sped by
+            // Quick Shots server-side, so the hasted prediction ended the bar
+            // early and the player was "still casting after the bar finished."
+            // The server's castTime is reality; reconcile to it (preserving any
+            // pushback already accumulated). A no-op when client and server agree.
+            g_cast.endMs =
+                g_cast.startMs + static_cast<int>(castTime) + g_cast.delayMs;
            return;
+        }
        g_cast = TrackedSpell{spellID, now, now + static_cast<int>(castTime), 0};
        g_castFromServer = true;
        g_channel.spellID = 0; // a cast supersedes any channel
@@ -55,6 +55,71 @@ static int __fastcall Script_GameTooltipSetSpellByID(void *L) {
    return 0;
 }

+// `GameTooltip:AddSpellByID(spellID)` — APPENDS a spell's tooltip to the
+// current one instead of clearing+rebuilding (the `SetSpellByID` behavior).
+// The natural pair to `SetSpellByID`; lets callers compose tooltips like
+// `AddLine(talentName) + AddSpellByID(rankSpellID)`.
+//
+// `BuildSpellTooltip`'s last arg (`param_7`) gates the clear: `0` calls the
+// per-tooltip Clear (`FUN_00530050`) first — that's `SetSpellByID`; non-zero
+// SKIPS the clear and appends. The append path is the engine's talent
+// "next rank" preview, so it (a) emits a `"\nNext rank:"` header line
+// instead of the spell name, and (b) does NOT stash the displayed spellID at
+// `+0x39C` (so `GetSpell` keeps reflecting the base tooltip — correct for an
+// append). We fix (a) by overwriting that header line — which lands at index
+// `numLines`-before-the-build (0-based) — with the real spell name via the
+// line pool's left-text FontString. Verified against `FUN_0052E610`.
+void AppendByID(void *L, int spellID) {
+    if (spellID <= 0)
+        return;
+    void *tooltipObj = Game::Lua::ResolveObject(L, 1);
+    if (tooltipObj == nullptr)
+        return;
+    auto *tt = static_cast<uint8_t *>(tooltipObj);
+
+    const int before = *reinterpret_cast<const int *>(
+        tt + Offsets::OFF_GAMETOOLTIP_NUM_LINES);
+
+    auto BuildSpellTooltip =
+        reinterpret_cast<BuildSpellTooltip_t>(Offsets::FUN_GAMETOOLTIP_BUILD_SPELL_TOOLTIP);
+    BuildSpellTooltip(tooltipObj, spellID, 0, 0, 0, 0, 0, /*param_7 (append)=*/1);
+
+    const int after = *reinterpret_cast<const int *>(
+        tt + Offsets::OFF_GAMETOOLTIP_NUM_LINES);
+    if (after <= before)
+        return; // nothing appended (bad spellID / missing Spell.dbc record)
+
+    const uint8_t *record = Spell::Lookup::RecordForID(spellID);
+    if (record == nullptr)
+        return;
+    const int locale = *reinterpret_cast<const int *>(Offsets::VAR_LOCALE_INDEX);
+    const char *name = *reinterpret_cast<const char *const *>(
+        record + OFF_SPELL_NAME + locale * 4);
+    if (name == nullptr || name[0] == '\0')
+        return;
+
+    // Left-text FontString array: descriptor at +0x324, data ptr at +0x8.
+    auto **textLeft = *reinterpret_cast<void ***>(
+        tt + Offsets::OFF_GAMETOOLTIP_TEXTLEFT_DESC + 8);
+    if (textLeft == nullptr)
+        return;
+    void *fs = textLeft[before];
+    if (fs == nullptr)
+        return;
+    using SetText_t = void(__thiscall *)(void *fs, const char *text, int flag);
+    reinterpret_cast<SetText_t>(Offsets::FUN_FONTSTRING_SET_TEXT)(fs, name, 0);
+}
+
+static int __fastcall Script_GameTooltipAddSpellByID(void *L) {
+    if (Game::Lua::Type(L, 1) != Game::Lua::TYPE_TABLE ||
+        !Game::Lua::IsNumber(L, 2)) {
+        Game::Lua::Error(L, "Usage: GameTooltip:AddSpellByID(spellID)");
+        return 0;
+    }
+    AppendByID(L, static_cast<int>(Game::Lua::ToNumber(L, 2)));
+    return 0;
+}
+
 // `GameTooltip:GetSpell()` → (name, rank, spellID) for whichever spell
 // the tooltip is currently displaying, or nothing if it isn't showing
 // a spell. BuildSpellTooltip writes the spellID to `tooltip+0x39C`;
@@ -126,6 +191,7 @@ static int __fastcall Script_GameTooltipHasSpell(void *L) {

 static const Game::Lua::FrameMethodEntry g_methods[] = {
    {"SetSpellByID", &Script_GameTooltipSetSpellByID},
+    {"AddSpellByID", &Script_GameTooltipAddSpellByID},
    {"GetSpell", &Script_GameTooltipGetSpell},
    {"HasSpell", &Script_GameTooltipHasSpell},
 };
@@ -26,4 +26,13 @@ namespace Spell::Tooltip {
 // so we render the rank-1 spell tooltip instead).
 void ShowByID(void *L, int spellID);

+// Like `ShowByID` but APPENDS the spell's tooltip to the current one
+// (no clear), and overwrites the engine's talent "next rank" header with
+// the real spell name. Backs `GameTooltip:AddSpellByID`. Silent no-op if
+// `spellID <= 0`, stack[1] isn't a frame object, or the build added no
+// lines. Does not stash the displayed spellID (so `GetSpell` still
+// reflects the base tooltip). Useful for cross-class talent tooltips
+// (`AddLine(talentName) + AppendByID(rankSpellID)`).
+void AppendByID(void *L, int spellID);
+
 } // namespace Spell::Tooltip
@@ -0,0 +1,328 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// Backports the post-vanilla TargetScript selection functions that 1.12.1
+// doesn't ship, built on the engine's own tab-targeting internals:
+//
+//   TargetNearest()                  — cycle nearest attackable/assistable unit
+//   TargetNearestEnemyPlayer([rev])  — cycle nearest hostile player (PvP)
+//   TargetNearestFriendPlayer([rev]) — cycle nearest friendly player
+//   TargetDirectionEnemy(facing[,cone])  — nearest hostile in a facing cone
+//   TargetDirectionFriend(facing[,cone]) — nearest friendly in a facing cone
+//
+// Vanilla already ships `TargetNearestEnemy/Friend/PartyMember/RaidMember`;
+// they run through `FUN_00493f60(reverse, mode)` — enumerate visible units,
+// keep those `FUN_00493e40(player, cand, mode)` accepts, sort by distance,
+// cycle, and commit via `FUN_00493540(guidLo, guidHi)`. We reuse the two
+// load-bearing pieces of that machinery directly:
+//
+//   * `FUN_00493e40` (Offsets::FUN_TARGET_CANDIDATE_VALID) — the exact
+//     per-mode validity predicate (mode 1 = enemy: attackable + alive +
+//     not-critter; mode 2 = friend: assistable + alive). Calling it gives
+//     us the engine's real reaction/hostility semantics with zero
+//     reimplementation.
+//   * `FUN_00493540` (Offsets::FUN_SET_SELECTION_BY_GUID) — the canonical
+//     setter the native cycle commits through (CMSG_SET_SELECTION + client
+//     target + event 0xC3), which also maintains the current-selection
+//     globals we read back for cycle continuity.
+//
+// So the only genuinely new logic here is (a) an extra player-GUID filter
+// for the `*Player` variants and (b) the cone geometry for the direction
+// variants — everything reaction-related defers to the engine.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "guid/Guid.h"
+#include "unit/Position.h"
+
+#include <cmath>
+#include <cstdint>
+
+namespace Target::Nearest {
+
+namespace {
+
+// Candidate class each function selects from.
+enum class Filter { Enemy, Friend, EnemyPlayer, FriendPlayer, Any };
+constexpr int kFilterCount = 5;
+
+// Default cone (full width, radians) when `coneAngle` is omitted — 90°, so
+// 45° to either side of the facing. The engine's own default constant
+// wasn't cleanly recoverable from the 3.3.5 reference binary; this is a
+// deliberate, documented choice that matches the "roughly in front of me"
+// intent of a direction-target keybind.
+constexpr float kDefaultConeAngle = 1.5707963f; // pi/2
+
+// Re-cycle window: repeated presses within this many ms advance through the
+// frozen candidate snapshot (no ping-pong as distances shift); a longer gap
+// rebuilds and re-targets the nearest. Mirrors the ~1s reset the native
+// cycle uses.
+constexpr uint32_t kCycleWindowMs = 1000;
+
+constexpr int kMaxCandidates = 64;
+
+// Engine entry points ─────────────────────────────────────────────────
+using Predicate_t = int(__fastcall *)(void *player, void *cand, int mode);
+using SetTargetByGuid_t = void(__fastcall *)(const uint64_t *guid);
+using EnumCallback_t = int(__fastcall *)(void *ctx, void *unusedEdx, uint64_t guid);
+using EnumVisibleObjects_t = int(__fastcall *)(EnumCallback_t cb, void *ctx);
+using ObjectPtr_t = void *(__fastcall *)(uint32_t typeMask, const char *dbg,
+                                         uint32_t guidLo, uint32_t guidHi,
+                                         int dbgCode);
+using TickMs_t = uint32_t(__fastcall *)();
+
+bool PassesFilter(void *player, void *cand, uint64_t guid, Filter f) {
+    auto valid = reinterpret_cast<Predicate_t>(Offsets::FUN_TARGET_CANDIDATE_VALID);
+    switch (f) {
+    case Filter::Enemy:        return valid(player, cand, 1) != 0;
+    case Filter::Friend:       return valid(player, cand, 2) != 0;
+    case Filter::EnemyPlayer:  return Guid::IsPlayer(guid) && valid(player, cand, 1) != 0;
+    case Filter::FriendPlayer: return Guid::IsPlayer(guid) && valid(player, cand, 2) != 0;
+    case Filter::Any:          return valid(player, cand, 1) != 0 ||
+                                      valid(player, cand, 2) != 0;
+    }
+    return false;
+}
+
+struct Candidate {
+    uint64_t guid;
+    float x, y;   // world XY (for the direction cone)
+    float distSq; // 3D squared distance from the player (for nearest)
+};
+
+struct CollectCtx {
+    void *player;
+    Filter filter;
+    float px, py, pz;
+    Candidate list[kMaxCandidates];
+    int count;
+};
+
+int __fastcall CollectCb(CollectCtx *ctx, void * /*edx*/, uint64_t guid) {
+    if (ctx->count >= kMaxCandidates)
+        return 1;
+    // Players and creatures both resolve under TYPEMASK_UNIT (CGPlayer
+    // derives from CGUnit); non-unit objects resolve to null and drop out.
+    auto ObjectPtr =
+        reinterpret_cast<ObjectPtr_t>(Offsets::FUN_CLNT_OBJ_MGR_OBJECT_PTR);
+    void *cand = ObjectPtr(Offsets::TYPEMASK_UNIT, nullptr,
+                           static_cast<uint32_t>(guid),
+                           static_cast<uint32_t>(guid >> 32), 0);
+    if (cand == nullptr || cand == ctx->player)
+        return 1;
+    if (!PassesFilter(ctx->player, cand, guid, ctx->filter))
+        return 1;
+
+    float pos[3];
+    if (!Unit::Position::Read(cand, pos))
+        return 1;
+    const float dx = pos[0] - ctx->px;
+    const float dy = pos[1] - ctx->py;
+    const float dz = pos[2] - ctx->pz;
+    Candidate &c = ctx->list[ctx->count++];
+    c.guid = guid;
+    c.x = pos[0];
+    c.y = pos[1];
+    c.distSq = dx * dx + dy * dy + dz * dz;
+    return 1;
+}
+
+// Enumerate visible units matching `f` into `out`. Returns false (empty)
+// pre-world or on a player-position miss.
+bool Collect(Filter f, CollectCtx *out) {
+    out->count = 0;
+    // The enumerator derefs the object manager unconditionally; null on the
+    // glue / character-select screen.
+    if (*reinterpret_cast<void *volatile *>(Offsets::VAR_LOCAL_PLAYER_PTR) ==
+        nullptr)
+        return false;
+    void *player = Unit::Position::ResolveToken("player");
+    float ppos[3];
+    if (!Unit::Position::Read(player, ppos))
+        return false;
+
+    out->player = player;
+    out->filter = f;
+    out->px = ppos[0];
+    out->py = ppos[1];
+    out->pz = ppos[2];
+    auto Enum = reinterpret_cast<EnumVisibleObjects_t>(
+        Offsets::FUN_CLNT_OBJ_MGR_ENUM_VISIBLE_OBJECTS);
+    Enum(reinterpret_cast<EnumCallback_t>(&CollectCb), out);
+    return true;
+}
+
+// Commit the selection through the engine's `Script_TargetUnit` helper
+// rather than the tab-cycle's raw `FUN_00493540`: this one first checks the
+// GUID resolves to a live unit and bails otherwise, so a stale GUID left in
+// a cycle snapshot (unit despawned / went out of range between presses)
+// gets rejected instead of committed. Committing a dead GUID would leave
+// `"target"` pointing at freed unit data and crash the next handler that
+// reads it. `FUN_TARGET_BY_GUID` still routes through `FUN_00493540`
+// internally, so the current-selection globals we read back are maintained.
+void SetTarget(uint64_t guid) {
+    reinterpret_cast<SetTargetByGuid_t>(Offsets::FUN_TARGET_BY_GUID)(&guid);
+}
+
+uint64_t CurrentSelection() {
+    const uint32_t lo = *reinterpret_cast<volatile uint32_t *>(
+        Offsets::VAR_CURRENT_SELECTION_GUID_LO);
+    const uint32_t hi = *reinterpret_cast<volatile uint32_t *>(
+        Offsets::VAR_CURRENT_SELECTION_GUID_HI);
+    return (static_cast<uint64_t>(hi) << 32) | lo;
+}
+
+uint32_t NowMs() {
+    return reinterpret_cast<TickMs_t>(Offsets::FUN_OS_TICKCOUNT_MS)();
+}
+
+// Ascending insertion sort by 3D distance (candidate counts are tiny).
+void SortByDistance(Candidate *a, int n) {
+    for (int i = 1; i < n; ++i) {
+        Candidate key = a[i];
+        int j = i - 1;
+        while (j >= 0 && a[j].distSq > key.distSq) {
+            a[j + 1] = a[j];
+            --j;
+        }
+        a[j + 1] = key;
+    }
+}
+
+// Per-filter tab-cycle state. A frozen snapshot of GUIDs (sorted nearest→
+// farthest) plus a cursor; presses within `kCycleWindowMs` that haven't had
+// the target changed out from under them advance the cursor over the frozen
+// list, so the order stays stable through a cycle burst.
+struct CycleState {
+    bool valid = false;
+    uint64_t snapshot[kMaxCandidates];
+    int count = 0;
+    int index = 0;
+    uint32_t lastPressMs = 0;
+    uint64_t lastSetGuid = 0;
+};
+CycleState g_cycle[kFilterCount];
+
+void DoCycle(void *L, Filter f) {
+    const bool reverse = Game::Lua::ToBoolean(L, 1) != 0;
+    CycleState &st = g_cycle[static_cast<int>(f)];
+    const uint32_t now = NowMs();
+
+    const bool cont = st.valid && st.count > 0 &&
+                      (now - st.lastPressMs) <= kCycleWindowMs &&
+                      CurrentSelection() == st.lastSetGuid;
+
+    if (cont) {
+        st.index = reverse ? (st.index + st.count - 1) % st.count
+                           : (st.index + 1) % st.count;
+    } else {
+        CollectCtx c;
+        if (!Collect(f, &c) || c.count == 0) {
+            st.valid = false;
+            return;
+        }
+        SortByDistance(c.list, c.count);
+        st.count = c.count;
+        for (int i = 0; i < c.count; ++i)
+            st.snapshot[i] = c.list[i].guid;
+        st.index = 0;
+        st.valid = true;
+    }
+
+    const uint64_t guid = st.snapshot[st.index];
+    SetTarget(guid);
+    st.lastSetGuid = guid;
+    st.lastPressMs = now;
+}
+
+void DoDirection(void *L, bool hostile, const char *usage) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::Error(L, usage);
+        return;
+    }
+    const float facing = static_cast<float>(Game::Lua::ToNumber(L, 1));
+    float cone = Game::Lua::IsNumber(L, 2)
+                     ? static_cast<float>(Game::Lua::ToNumber(L, 2))
+                     : kDefaultConeAngle;
+    if (cone <= 0.0f)
+        cone = kDefaultConeAngle;
+    const float cosHalf = std::cos(cone * 0.5f);
+    const float dirX = std::cos(facing);
+    const float dirY = std::sin(facing);
+
+    CollectCtx c;
+    if (!Collect(hostile ? Filter::Enemy : Filter::Friend, &c) || c.count == 0)
+        return;
+
+    int best = -1;
+    float bestDistSq = 0.0f;
+    for (int i = 0; i < c.count; ++i) {
+        const float vx = c.list[i].x - c.px;
+        const float vy = c.list[i].y - c.py;
+        const float horizSq = vx * vx + vy * vy;
+        if (horizSq <= 0.0001f)
+            continue;
+        // cos(angle between facing and the horizontal vector to the unit).
+        const float cosAngle = (dirX * vx + dirY * vy) / std::sqrt(horizSq);
+        if (cosAngle < cosHalf)
+            continue; // outside the cone
+        if (best < 0 || c.list[i].distSq < bestDistSq) {
+            best = i;
+            bestDistSq = c.list[i].distSq;
+        }
+    }
+    if (best >= 0)
+        SetTarget(c.list[best].guid);
+}
+
+// Lua entry points ─────────────────────────────────────────────────────
+int __fastcall Script_TargetNearest(void *L) {
+    DoCycle(L, Filter::Any);
+    return 0;
+}
+int __fastcall Script_TargetNearestEnemyPlayer(void *L) {
+    DoCycle(L, Filter::EnemyPlayer);
+    return 0;
+}
+int __fastcall Script_TargetNearestFriendPlayer(void *L) {
+    DoCycle(L, Filter::FriendPlayer);
+    return 0;
+}
+int __fastcall Script_TargetDirectionEnemy(void *L) {
+    DoDirection(L, /*hostile*/ true,
+                "Usage: TargetDirectionEnemy(facing [, coneAngle])");
+    return 0;
+}
+int __fastcall Script_TargetDirectionFriend(void *L) {
+    DoDirection(L, /*hostile*/ false,
+                "Usage: TargetDirectionFriend(facing [, coneAngle])");
+    return 0;
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("TargetNearest", &Script_TargetNearest);
+    Game::Lua::RegisterGlobalFunction("TargetNearestEnemyPlayer",
+                                      &Script_TargetNearestEnemyPlayer);
+    Game::Lua::RegisterGlobalFunction("TargetNearestFriendPlayer",
+                                      &Script_TargetNearestFriendPlayer);
+    Game::Lua::RegisterGlobalFunction("TargetDirectionEnemy",
+                                      &Script_TargetDirectionEnemy);
+    Game::Lua::RegisterGlobalFunction("TargetDirectionFriend",
+                                      &Script_TargetDirectionFriend);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Target::Nearest
@@ -366,6 +366,80 @@ int __fastcall Script_GetAllTaxiNodes(void *L) {
    return 1;
 }

+// Direct-edge test — mirrors FUN_004dbad0: a 256x256 [from][to] matrix of
+// TaxiPath IDs (0 = no direct flight path). IDs outside 1..256 are never direct.
+bool DirectEdge(int from, int to) {
+    if (from <= 0 || from > Offsets::TAXI_ADJACENCY_DIM ||
+        to <= 0 || to > Offsets::TAXI_ADJACENCY_DIM)
+        return false;
+    const int *adj = reinterpret_cast<const int *>(Offsets::VAR_TAXI_ADJACENCY);
+    return adj[from * Offsets::TAXI_ADJACENCY_DIM + to] != 0;
+}
+
+// `C_TaxiMap.GetTaxiRoute(slotIndex)` — the TaxiNodes.dbc ID chain the client
+// would fly to the taxi-map slot `slotIndex` (1..NumTaxiNodes), in flight
+// order { currentNodeID, ..., destNodeID }. This mirrors TakeTaxiNode's own
+// decision (FUN_004dc8d0): a direct hop when a TaxiPath edge exists, otherwise
+// the client's precomputed multi-hop route array. It is the exact node list
+// TakeTaxiNode would hand the server, so an addon can identify every hop
+// without matching flight-map coordinates back to nodes. Returns nothing when
+// no taxi map is open, the slot is out of range, it is the current node, or no
+// route exists.
+int __fastcall Script_GetTaxiRoute(void *L) {
+    if (!Game::Lua::IsNumber(L, 1))
+        return 0;
+    const int slot1 = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    const int count =
+        *reinterpret_cast<const int *>(Offsets::VAR_TAXI_NODE_COUNT);
+    if (count <= 0 || slot1 < 1 || slot1 > count)
+        return 0;
+
+    const auto *arrayBase =
+        reinterpret_cast<const uint8_t *>(Offsets::VAR_TAXI_NODE_ARRAY);
+    const uint8_t *slotRec =
+        arrayBase + (slot1 - 1) * Offsets::TAXI_NODE_STRIDE;
+
+    const uint8_t *curRec = *reinterpret_cast<const uint8_t *const *>(
+        Offsets::VAR_TAXI_CURRENT_REC);
+    const uint8_t *dstRec = *reinterpret_cast<const uint8_t *const *>(
+        slotRec + Offsets::OFF_TAXI_SLOT_RECORD);
+    if (curRec == nullptr || dstRec == nullptr)
+        return 0;
+    const int currentID = IntField(curRec, 0);
+    const int destID = IntField(dstRec, 0);
+    if (currentID == 0 || destID == 0 || currentID == destID)
+        return 0;
+
+    // Collect the chain exactly as FUN_004dc8d0 (TakeTaxiNode) would send it.
+    int ids[64];
+    int n = 0;
+    if (DirectEdge(currentID, destID)) {
+        ids[n++] = currentID;
+        ids[n++] = destID;
+    } else if (*(slotRec + Offsets::OFF_TAXI_SLOT_MULTIHOP) != 0) {
+        const int *route = *reinterpret_cast<const int *const *>(
+            slotRec + Offsets::OFF_TAXI_SLOT_ROUTE);
+        const int rc = *reinterpret_cast<const int *>(
+            slotRec + Offsets::OFF_TAXI_SLOT_ROUTE_COUNT);
+        if (route == nullptr || rc < 2)
+            return 0;
+        const int cap = rc < 64 ? rc : 64;
+        for (int i = 0; i < cap; ++i)
+            ids[n++] = route[i];
+    } else {
+        return 0; // reachable node with no computed route (shouldn't happen)
+    }
+
+    Game::Lua::SetTop(L, 0);
+    Game::Lua::NewTable(L);
+    for (int i = 0; i < n; ++i) {
+        Game::Lua::PushNumber(L, static_cast<double>(i + 1));
+        Game::Lua::PushNumber(L, static_cast<double>(ids[i]));
+        Game::Lua::SetTable(L, -3);
+    }
+    return 1;
+}
+
 void RegisterLuaFunctions() {
    static const Game::Lua::EnumIntegerEntry kFaction[] = {
        {"Neutral", FACTION_NEUTRAL},
@@ -385,6 +459,8 @@ void RegisterLuaFunctions() {
                                     &Script_GetTaxiNodesForMap);
    Game::Lua::RegisterTableFunction("C_TaxiMap", "GetAllTaxiNodes",
                                     &Script_GetAllTaxiNodes);
+    Game::Lua::RegisterTableFunction("C_TaxiMap", "GetTaxiRoute",
+                                     &Script_GetTaxiRoute);
 }

 const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
@@ -0,0 +1,139 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_TaxiMap.GetTaxiPaths()` and `C_TaxiMap.GetTaxiPathWaypoints(pathID)` —
+// direct readers for `TaxiPath.dbc` (the directed flight-path edge list with
+// costs) and `TaxiPathNode.dbc` (each path's world-coordinate waypoint
+// polyline). Vanilla exposes neither; addons can't read DBCs at all, so this
+// hands them the raw taxi graph + geometry.
+//
+// Together they let an addon build the taxi routing graph (nodes + weighted
+// directed edges) and measure real flight distances (sum the 3D chords of a
+// path's waypoints). Uses for a flight-path database, a map overlay, or a
+// travel-time estimator — see the sibling `C_TaxiMap.GetTaxiNodesForMap` for
+// the node table these edges connect.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <algorithm>
+#include <cstdint>
+#include <vector>
+
+namespace Taxi::Paths {
+
+namespace {
+
+int IntField(const uint8_t *rec, int off) {
+    return *reinterpret_cast<const int *>(rec + off);
+}
+float FloatField(const uint8_t *rec, int off) {
+    return *reinterpret_cast<const float *>(rec + off);
+}
+
+// `C_TaxiMap.GetTaxiPaths()` — every row of TaxiPath.dbc as
+// { pathID, fromNodeID, toNodeID, cost }. Directed: A->B and B->A are two
+// separate entries.
+int __fastcall Script_GetTaxiPaths(void *L) {
+    Game::Lua::SetTop(L, 0);
+    Game::Lua::NewTable(L);
+
+    const int count = *reinterpret_cast<const int *>(Offsets::VAR_TAXIPATH_COUNT);
+    int outIdx = 0;
+    for (int id = 1; id <= count; ++id) {
+        const uint8_t *rec = DBC::Record(Offsets::VAR_TAXIPATH_RECORDS,
+                                         Offsets::VAR_TAXIPATH_COUNT,
+                                         static_cast<uint32_t>(id));
+        if (rec == nullptr)
+            continue;
+
+        outIdx += 1;
+        Game::Lua::PushNumber(L, static_cast<double>(outIdx));
+        Game::Lua::NewTable(L);
+        Game::Lua::SetFieldNumber(L, "pathID", id);
+        Game::Lua::SetFieldNumber(L, "fromNodeID", IntField(rec, Offsets::OFF_TAXIPATH_FROM));
+        Game::Lua::SetFieldNumber(L, "toNodeID", IntField(rec, Offsets::OFF_TAXIPATH_TO));
+        Game::Lua::SetFieldNumber(L, "cost", IntField(rec, Offsets::OFF_TAXIPATH_COST));
+        Game::Lua::SetTable(L, -3);
+    }
+    return 1;
+}
+
+// `C_TaxiMap.GetTaxiPathWaypoints(pathID)` — the path's waypoints as
+// { x, y, z, mapID }, ordered by node index (flight order). Returns nothing
+// for a missing / unknown pathID or an empty path.
+int __fastcall Script_GetTaxiPathWaypoints(void *L) {
+    if (!Game::Lua::IsNumber(L, 1))
+        return 0;
+    const int wantPath = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    if (wantPath <= 0)
+        return 0;
+
+    struct Waypoint {
+        int index;
+        float x, y, z;
+        int mapID;
+    };
+    std::vector<Waypoint> pts;
+    const int count = *reinterpret_cast<const int *>(Offsets::VAR_TAXIPATHNODE_COUNT);
+    for (int id = 1; id <= count; ++id) {
+        const uint8_t *rec = DBC::Record(Offsets::VAR_TAXIPATHNODE_RECORDS,
+                                         Offsets::VAR_TAXIPATHNODE_COUNT,
+                                         static_cast<uint32_t>(id));
+        if (rec == nullptr)
+            continue;
+        if (IntField(rec, Offsets::OFF_TAXIPATHNODE_PATH_ID) != wantPath)
+            continue;
+        pts.push_back({IntField(rec, Offsets::OFF_TAXIPATHNODE_INDEX),
+                       FloatField(rec, Offsets::OFF_TAXIPATHNODE_X),
+                       FloatField(rec, Offsets::OFF_TAXIPATHNODE_Y),
+                       FloatField(rec, Offsets::OFF_TAXIPATHNODE_Z),
+                       IntField(rec, Offsets::OFF_TAXIPATHNODE_MAP)});
+    }
+    if (pts.empty())
+        return 0;
+
+    // DBC rows for a path are stored in index order, but sort to guarantee a
+    // dense 1-based (ipairs-safe) array in flight order regardless.
+    std::sort(pts.begin(), pts.end(),
+              [](const Waypoint &a, const Waypoint &b) { return a.index < b.index; });
+
+    Game::Lua::SetTop(L, 0);
+    Game::Lua::NewTable(L);
+    int outIdx = 0;
+    for (const Waypoint &p : pts) {
+        outIdx += 1;
+        Game::Lua::PushNumber(L, static_cast<double>(outIdx));
+        Game::Lua::NewTable(L);
+        Game::Lua::SetFieldNumber(L, "x", p.x);
+        Game::Lua::SetFieldNumber(L, "y", p.y);
+        Game::Lua::SetFieldNumber(L, "z", p.z);
+        Game::Lua::SetFieldNumber(L, "mapID", p.mapID);
+        Game::Lua::SetTable(L, -3);
+    }
+    return 1;
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_TaxiMap", "GetTaxiPaths",
+                                     &Script_GetTaxiPaths);
+    Game::Lua::RegisterTableFunction("C_TaxiMap", "GetTaxiPathWaypoints",
+                                     &Script_GetTaxiPathWaypoints);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Taxi::Paths
@@ -47,6 +47,7 @@
 #include "item/Count.h"
 #include "spell/Lookup.h"
 #include "tick/WorldTick.h"
+#include "ui/ColorData.h"
 #include "unit/Identity.h"

 #include <cstdint>
@@ -499,6 +500,108 @@ int __fastcall Script_TargetTotem(void *L) {
    return 0;
 }

+// ---- GameTooltip:SetTotem(slot) -------------------------------------------
+//
+// Built with the engine's own tooltip primitives — the per-tooltip clear
+// and the raw add-line — exactly as retail's `Script_GameTooltip_SetTotem`
+// does (no Lua method dispatch). Colors are the packed `{b,g,r,a}` values
+// `FUN_GAMETOOLTIP_ADD_LINE` wants, pulled straight from `UI::ColorData`.
+
+using AddLine_t = void(__thiscall *)(void *self, const char *left, const char *right,
+                                     const void *leftColor, const void *rightColor, int wrap);
+using ClearTooltip_t = void(__fastcall *)(void *self);
+using ShowScript_t = int(__fastcall *)(void *L); // engine's Script_Show
+
+// Retail's two line colors, read verbatim from the 3.3.5 binary's SetTotem
+// color data: name = NORMAL_FONT_COLOR (0xFFFFD200), time = white. Both are
+// already in the 0xAARRGGBB packing the line-color setter consumes.
+constexpr uint32_t kNameColor = UI::ColorData::ByTag("NORMAL_FONT_COLOR");
+constexpr uint32_t kTimeColor = UI::ColorData::ByTag("HIGHLIGHT_FONT_COLOR");
+
+// Left-aligned colored line via the engine's raw add-line. `color` must
+// outlive the call (its address is passed through).
+void AddColoredLine(void *self, const char *text, const uint32_t &color) {
+    reinterpret_cast<AddLine_t>(Offsets::FUN_GAMETOOLTIP_ADD_LINE)(
+        self, text, nullptr, &color, nullptr, 0);
+}
+
+// `GameTooltip:SetTotem(slot)` — a TBC (2.4.0) tooltip method backported to
+// 1.12. Fills the tooltip with the slot's active totem, mirroring retail's
+// two-line shape (3.3.5 `Script_GameTooltip_SetTotem` at 0x006205c0):
+//
+//   <Totem Name>          NORMAL_FONT_COLOR (yellow, 0xFFFFD200)
+//   <Time Left>           white — SecondsToTimeAbbrev(SPELL_TIME_REMAINING)
+//
+// The time line mirrors retail's `SecondsToTimeAbbrev` with its round-up
+// flag: raw seconds under a minute, minutes rounded up above. The unit
+// wording is localized through the project's GlobalString helper (retail's
+// `SPELL_TIME_REMAINING_SEC`/`_MIN` keys, English fallback). No-op (tooltip
+// left untouched) when the slot has no active totem — same as retail's
+// `+8/+0xc` timing guard. Shows itself at the end (via the engine's
+// Script_Show) — retail's TotemFrame.xml OnEnter calls SetTotem with no
+// trailing :Show(), so the method is expected to show.
+int __fastcall Script_GameTooltipSetTotem(void *L) {
+    if (Game::Lua::Type(L, 1) != Game::Lua::TYPE_TABLE ||
+        !Game::Lua::IsNumber(L, 2)) {
+        Game::Lua::Error(L, "Usage: GameTooltip:SetTotem(slot)");
+        return 0;
+    }
+    const int slot = static_cast<int>(Game::Lua::ToNumber(L, 2));
+    if (slot < 1 || slot > kSlots)
+        return 0;
+    const Slot &t = g_slots[slot - 1];
+    if (!t.active || t.spellID == 0)
+        return 0;
+
+    void *self = Game::Lua::ResolveObject(L, 1);
+    if (self == nullptr)
+        return 0;
+
+    const uint8_t *rec = Spell::Lookup::RecordForID(static_cast<int>(t.spellID));
+    if (rec == nullptr)
+        return 0;
+    const int locale =
+        *reinterpret_cast<const int *>(static_cast<uintptr_t>(Offsets::VAR_LOCALE_INDEX));
+    const char *name =
+        *reinterpret_cast<const char *const *>(rec + OFF_NAME + locale * 4);
+    if (name == nullptr || name[0] == '\0')
+        return 0;
+
+    // Milliseconds remaining (0 = unknown / expired duration).
+    uint32_t msLeft = 0;
+    if (t.durationMs != 0) {
+        const uint32_t now = NowMs();
+        const uint32_t end = t.startMs + t.durationMs;
+        if (now < end)
+            msLeft = end - now;
+    }
+
+    reinterpret_cast<ClearTooltip_t>(Offsets::FUN_GAMETOOLTIP_CLEAR)(self);
+    AddColoredLine(self, name, kNameColor);
+
+    if (msLeft > 0) {
+        const int savedTop = Game::Lua::GetTop(L);
+        if (msLeft < 60000) {
+            Game::Lua::PushLocalizedFormatInt(L, "SPELL_TIME_REMAINING_SEC",
+                                              "%d Sec",
+                                              static_cast<int>(msLeft / 1000));
+        } else {
+            const int minutes = static_cast<int>((msLeft + 59999) / 60000); // ceil
+            Game::Lua::PushLocalizedFormatInt(L, "SPELL_TIME_REMAINING_MIN",
+                                              "%d Min", minutes);
+        }
+        const char *timeText = Game::Lua::ToString(L, -1);
+        if (timeText != nullptr)
+            AddColoredLine(self, timeText, kTimeColor);
+        Game::Lua::SetTop(L, savedTop);
+    }
+
+    // Show ourselves — self is still at Lua stack index 1, which is what
+    // Script_Show reads.
+    reinterpret_cast<ShowScript_t>(Offsets::FUN_SCRIPT_FRAME_SHOW)(L);
+    return 0;
+}
+
 void RegisterLuaFunctions() {
    Game::Lua::RegisterGlobalFunction("GetTotemInfo", &Script_GetTotemInfo);
    Game::Lua::RegisterGlobalFunction("GetTotemTimeLeft",
@@ -506,6 +609,14 @@ void RegisterLuaFunctions() {
    Game::Lua::RegisterGlobalFunction("GetTotemDuration",
                                      &Script_GetTotemDuration);
    Game::Lua::RegisterGlobalFunction("TargetTotem", &Script_TargetTotem);
+
+    static const Game::Lua::FrameMethodEntry kTooltipMethods[] = {
+        {"SetTotem", &Script_GameTooltipSetTotem},
+    };
+    Game::Lua::RegisterFrameMethods(
+        reinterpret_cast<void *>(Offsets::VAR_GAMETOOLTIP_METHOD_REGISTRY),
+        kTooltipMethods,
+        static_cast<int>(sizeof(kTooltipMethods) / sizeof(kTooltipMethods[0])));
 }

 const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
@@ -0,0 +1,86 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#include "ui/FrameObject.h"
+
+#include "Game.h"
+#include "Offsets.h"
+
+#include <cstdint>
+
+namespace UI::FrameObject {
+
+namespace {
+
+using LuaRawGetI_t = void(__fastcall *)(void *L, int idx, int n);
+using ScriptRegister_t = void(__fastcall *)(void *this_, void *edx_unused,
+                                            const char *name);
+
+} // namespace
+
+// Delegate wrapper construction to the engine's own
+// `FrameScript_Object::ScriptRegister`. First call for a never-seen frame
+// builds a `{[0] = lightuserdata}` table with the framescript metatable,
+// `luaL_ref`s it into the registry, and writes the refkey to `frame +
+// 0x08` (`OFF_COBJECT_LUA_REGISTRY_REF`). Subsequent calls find a
+// populated refkey and just rawgeti.
+//
+// Why delegate instead of building our own wrapper: single source of
+// truth. Every code path that pushes this frame — ours, addons'
+// `CreateFrame(..., parent)` extracting the frame, the engine's own
+// pushers — funnels through `rawgeti(REGISTRY, frame + 0x08)` and gets the
+// same Lua table, so addon fields set on the wrapper don't get orphaned
+// onto a divergent copy. See the long note in `nameplate/Info.cpp`'s
+// original implementation for the pfUI-divergence story that motivated
+// this.
+//
+// `ScriptRegister` unconditionally bumps the CObject refcount at `+0x04`,
+// which pins the frame against GC. That's benign for the pooled/permanent
+// frames we push here (nameplates, chat bubbles) — we call it at most
+// once per frame pointer (gated by `refKey <= 0`), so the refcount tops
+// out at one increment per pool slot.
+//
+// Defensive fallback: if the registry slot exists but isn't a table any
+// more (freed elsewhere), re-register to rebuild a fresh wrapper. This
+// shouldn't happen in practice — engines only unref on frame destruction.
+void Push(void *L, void *frame) {
+    auto rawgeti = reinterpret_cast<LuaRawGetI_t>(
+        Offsets::FUN_FRAMESCRIPT_PUSH_OBJECT);
+    auto scriptRegister = reinterpret_cast<ScriptRegister_t>(
+        static_cast<uintptr_t>(Offsets::FUN_FRAMESCRIPT_OBJECT_SCRIPT_REGISTER));
+
+    auto *cobj = static_cast<uint8_t *>(frame);
+    int refKey = *reinterpret_cast<const int *>(
+        cobj + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    if (refKey <= 0) {
+        scriptRegister(frame, nullptr, nullptr);
+        refKey = *reinterpret_cast<const int *>(
+            cobj + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    }
+
+    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
+    if (Game::Lua::Type(L, -1) == Game::Lua::TYPE_TABLE)
+        return;
+    Game::Lua::SetTop(L, -2);
+
+    // Slot got freed somewhere — re-register to rebuild a fresh wrapper
+    // and slot. Zero the refcount so `ScriptRegister` re-enters its build
+    // branch.
+    *reinterpret_cast<int *>(cobj + Offsets::OFF_COBJECT_LUA_REFCOUNT) = 0;
+    scriptRegister(frame, nullptr, nullptr);
+    refKey = *reinterpret_cast<const int *>(
+        cobj + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
+}
+
+} // namespace UI::FrameObject
@@ -0,0 +1,34 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+namespace UI::FrameObject {
+
+// Pushes a C++ `CFrameScriptObject`-derived frame onto the Lua stack as
+// its canonical wrapper table — the same object every other engine path
+// resolves via `rawgeti(REGISTRY, frame + 0x08)`, so addon-set fields on
+// the wrapper survive roundtrips through our API and method dispatch
+// (`:GetRegions()`, `:GetName()`, …) works normally.
+//
+// For frames the engine created purely in C++ without ever going through
+// `CreateFrame` (default nameplates, chat bubbles), the registry ref at
+// `+0x08` starts at 0; the first push delegates to the engine's own
+// `FrameScript_Object::ScriptRegister` to lazily build the wrapper +
+// registry slot. Subsequent pushes just `rawgeti` the cached slot.
+//
+// Leaves exactly one value (the wrapper table, or the re-registered
+// fallback) on the stack. `frame` must be non-null.
+void Push(void *L, void *frame);
+
+} // namespace UI::FrameObject
@@ -33,6 +33,17 @@
 // every world tick — when it returns null, we `Set(0)` which fires
 // the event. Cost is one hash-table lookup per tick while focus is
 // set; zero when no focus is active.
+//
+// Unit events for `focus` / `focustarget`: `Unit::TokenObserver` watches
+// the focus unit's descriptor fields so `UNIT_HEALTH` / `UNIT_AURA` / …
+// fire with `arg1 == "focus"` (see FocusFieldCb). `focustarget` gets the
+// same treatment via a second observer — but its GUID is the focus unit's
+// *current target*, which changes with no event to signal it (vanilla's
+// `UNIT_FIELD_TARGET`, field 10, has no event-table slot). So the WorldTick
+// watcher re-reads the focus's target each tick and re-points the
+// focustarget observer only when that identity changes; the focustarget
+// *events* still fire event-driven through the observer — only the
+// re-pointing is tick-gated (≤1 tick lag after the focus swaps targets).

 #include "Focus.h"

@@ -40,6 +51,7 @@
 #include "Offsets.h"
 #include "event/Custom.h"
 #include "tick/WorldTick.h"
+#include "unit/TokenObserver.h"

 #include <cstdint>

@@ -52,6 +64,43 @@ const Event::Custom::AutoReserve _reserve{kEventName};

 uint64_t g_focusGUID = 0;

+// Descriptor-field observer callback — fires the changed field's unit event
+// with the `"focus"` token, making `arg1 == "focus"` work for `UNIT_HEALTH`,
+// `UNIT_MANA`, `UNIT_AURA`, … exactly like a native token. Registered per
+// focus unit via `Unit::TokenObserver` (mirrors the engine's own watch of
+// target/party/raid units). The event id is the field index (`fieldOffset >>
+// 2`); the engine fires every unit event with format "%s" + the token, so we
+// match that. Guarded on the live focus GUID so an in-flight field change that
+// races an unregister can't fire a stale token.
+int __fastcall FocusFieldCb(uint32_t fieldOffset, uint32_t /*size*/,
+                            uint32_t guidLo, uint32_t guidHi,
+                            const uint32_t * /*oldValue*/, void * /*userArg*/) {
+    if (guidLo != static_cast<uint32_t>(g_focusGUID) ||
+        guidHi != static_cast<uint32_t>(g_focusGUID >> 32))
+        return 1;
+    using Fire_t = void(__cdecl *)(int eventId, const char *fmt, ...);
+    reinterpret_cast<Fire_t>(static_cast<uintptr_t>(Offsets::FUN_FIRE_EVENT))(
+        static_cast<int>(fieldOffset >> 2), "%s", "focus");
+    return 1;
+}
+
+// GUID currently watched as `focustarget` (the focus unit's target), or 0.
+// Re-pointed by `OnWorldTick`; distinct from `g_focusGUID`.
+uint64_t g_focusTargetGUID = 0;
+
+// Same as `FocusFieldCb` but fires the `"focustarget"` token.
+int __fastcall FocusTargetFieldCb(uint32_t fieldOffset, uint32_t /*size*/,
+                                  uint32_t guidLo, uint32_t guidHi,
+                                  const uint32_t * /*oldValue*/, void * /*userArg*/) {
+    if (guidLo != static_cast<uint32_t>(g_focusTargetGUID) ||
+        guidHi != static_cast<uint32_t>(g_focusTargetGUID >> 32))
+        return 1;
+    using Fire_t = void(__cdecl *)(int eventId, const char *fmt, ...);
+    reinterpret_cast<Fire_t>(static_cast<uintptr_t>(Offsets::FUN_FIRE_EVENT))(
+        static_cast<int>(fieldOffset >> 2), "%s", "focustarget");
+    return 1;
+}
+
 using TokenToGUID_t = uint64_t(__fastcall *)(const char *token);
 using ResolveByGUID_t = void *(__fastcall *)(int type, const char *debugName,
                                              uint32_t guidLo, uint32_t guidHi,
@@ -71,15 +120,39 @@ uint64_t ResolveTokenGUID(const char *token) {
 // "leaves render distance → focus drops" behavior. Won't refocus
 // when the unit comes back, also matching modern.
 void OnWorldTick() {
-    if (g_focusGUID == 0)
-        return;
-    auto resolve = reinterpret_cast<ResolveByGUID_t>(
-        static_cast<uintptr_t>(Offsets::FUN_OBJECT_RESOLVE_BY_GUID));
-    if (resolve(Offsets::OBJ_TYPE_UNIT, "Focus",
-                static_cast<uint32_t>(g_focusGUID),
-                static_cast<uint32_t>(g_focusGUID >> 32),
-                0x172) == nullptr)
-        Set(0);
+    // Resolve the focus object (this is also the despawn check) and, if it's
+    // alive, read its current target — that GUID is `focustarget`. Vanilla
+    // fires no event when a unit re-targets, so this once-per-tick identity
+    // read is the only way to notice the focus switching targets; the
+    // focustarget *events* still fire event-driven via the observer below.
+    uint64_t desiredFocusTarget = 0;
+    if (g_focusGUID != 0) {
+        auto resolve = reinterpret_cast<ResolveByGUID_t>(
+            static_cast<uintptr_t>(Offsets::FUN_OBJECT_RESOLVE_BY_GUID));
+        auto *focusObj = static_cast<const uint8_t *>(
+            resolve(Offsets::OBJ_TYPE_UNIT, "Focus",
+                    static_cast<uint32_t>(g_focusGUID),
+                    static_cast<uint32_t>(g_focusGUID >> 32), 0x172));
+        if (focusObj == nullptr) {
+            Set(0); // focus left the object table → drop focus
+        } else {
+            auto *fields = *reinterpret_cast<const uint8_t *const *>(
+                focusObj + Offsets::OFF_CGUNIT_OBJECT_FIELDS);
+            if (fields != nullptr)
+                desiredFocusTarget = *reinterpret_cast<const uint64_t *>(
+                    fields + Offsets::OFF_UNIT_FIELD_TARGET);
+        }
+    }
+
+    // Re-point the focustarget observer only when the target identity
+    // changes (focus swapped targets, focus cleared, or focus has no target).
+    if (desiredFocusTarget != g_focusTargetGUID) {
+        if (g_focusTargetGUID != 0)
+            TokenObserver::Unregister(g_focusTargetGUID, &FocusTargetFieldCb);
+        g_focusTargetGUID = desiredFocusTarget;
+        if (g_focusTargetGUID != 0)
+            TokenObserver::Register(g_focusTargetGUID, &FocusTargetFieldCb);
+    }
 }

 // `FocusUnit(unit)` — sets focus to whatever GUID `unit` currently
@@ -111,6 +184,24 @@ void RegisterLuaFunctions() {
 const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
 const Tick::WorldTick::AutoSubscribe _tickSub{&OnWorldTick};

+// Drop focus when the player logs out to the glue screen. The DLL isn't
+// reloaded on a logout→character-select→login, so g_focusGUID would
+// otherwise carry a dead GUID from character A into character B. The
+// WorldTick despawn probe self-heals it within a tick (ObjectByGUID miss
+// → Set(0)), but that fires a spurious PLAYER_FOCUS_CHANGED on B's first
+// tick and can't cover the (astronomically rare) GUID-collision case, so
+// clearing here is both cleaner and exact retail parity. We use the glue
+// hook, NOT FrameScript_Initialize, because it fires on the world→glue
+// return a logout triggers but NOT on /reload — so focus correctly
+// survives /reload (retail behavior) and drops only on logout. No event /
+// observer work: char A's focus observers already died with the object
+// during world teardown, and B starts with focus nil (no event expected).
+void ClearOnLogout() {
+    g_focusGUID = 0;
+    g_focusTargetGUID = 0;
+}
+const Game::GlueModuleAutoRegister _clearOnLogout{&ClearOnLogout};
+
 } // namespace

 uint64_t Get() { return g_focusGUID; }
@@ -118,7 +209,21 @@ uint64_t Get() { return g_focusGUID; }
 void Set(uint64_t guid) {
    if (guid == g_focusGUID)
        return; // no-op: same target → no event fire (matches 3.3.5)
+    // Stop watching the old focus, start watching the new one, so unit events
+    // (UNIT_HEALTH, …) fire with "focus" for whatever is focused — even a unit
+    // the engine isn't otherwise watching. Unregister is a safe no-op if the
+    // old unit already despawned (nodes died with it).
+    if (g_focusGUID != 0)
+        TokenObserver::Unregister(g_focusGUID, &FocusFieldCb);
+    // Focus changed → the old focustarget is stale; drop its observer now.
+    // WorldTick re-resolves and re-points to the new focus's target next tick.
+    if (g_focusTargetGUID != 0) {
+        TokenObserver::Unregister(g_focusTargetGUID, &FocusTargetFieldCb);
+        g_focusTargetGUID = 0;
+    }
    g_focusGUID = guid;
+    if (guid != 0)
+        TokenObserver::Register(guid, &FocusFieldCb);
    const int slot = Event::Custom::Lookup(kEventName);
    if (slot >= 0)
        Event::Custom::Fire(slot, "");
@@ -0,0 +1,79 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `UnitHealthMissing(unit)` — the health deficit, i.e. the equivalent of
+// `UnitHealthMax(unit) - UnitHealth(unit)`. A convenience for healing addons
+// (overheal checks, "missing health" bars) that otherwise call both engine
+// functions and subtract in Lua every frame. Reads the two health fields off
+// the unit's descriptor directly (same path `Unit::Power` uses for POWER),
+// so it's a single resolve + two field reads.
+//
+// Health carries no display divisor — unlike rage/happiness, HEALTH and
+// MAXHEALTH are stored at face value — so the deficit is a plain subtraction,
+// clamped at 0 (a transient current > max should never surface as negative).
+
+#include "Game.h"
+#include "Offsets.h"
+
+#include <cstdint>
+
+namespace Unit::Health {
+
+namespace {
+
+using ResolveUnitToken_t = void *(__fastcall *)(const char *token);
+
+const uint8_t *Descriptor(const uint8_t *unit) {
+    if (unit == nullptr)
+        return nullptr;
+    return *reinterpret_cast<const uint8_t *const *>(
+        unit + Offsets::OFF_CGUNIT_OBJECT_FIELDS);
+}
+
+const uint8_t *ResolveUnit(const char *token) {
+    if (token == nullptr)
+        return nullptr;
+    auto fn = reinterpret_cast<ResolveUnitToken_t>(Offsets::FUN_RESOLVE_UNIT_TOKEN);
+    return static_cast<const uint8_t *>(fn(token));
+}
+
+// `UnitHealthMissing("unit")` — returns `max - current` health (never
+// negative). Returns 0 for a valid-but-absent unit (e.g. `"target"` with no
+// target), matching `UnitHealth`'s 0-for-missing convention.
+static int __fastcall Script_UnitHealthMissing(void *L) {
+    if (!Game::Lua::IsString(L, 1)) {
+        Game::Lua::Error(L, "Usage: UnitHealthMissing(\"unit\")");
+        return 0;
+    }
+    const uint8_t *desc = Descriptor(ResolveUnit(Game::Lua::ToString(L, 1)));
+    if (desc == nullptr) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    const uint32_t cur = *reinterpret_cast<const uint32_t *>(
+        desc + Offsets::OFF_UNIT_FIELD_HEALTH);
+    const uint32_t max = *reinterpret_cast<const uint32_t *>(
+        desc + Offsets::OFF_UNIT_FIELD_MAXHEALTH);
+    Game::Lua::PushNumber(L, static_cast<double>(max > cur ? max - cur : 0u));
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("UnitHealthMissing", &Script_UnitHealthMissing);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Unit::Health
@@ -289,16 +289,14 @@ const char *TokenFromGUID(uint64_t target, char *buf, size_t bufSize) {
        if (GuidForToken(buf) == target) return buf;
    }

-    // Visible nameplates. The ordered list (see
-    // `NamePlate::Events::g_orderedGUIDs`) is dense — `GetGUIDByIndex`
-    // returns 0 once we step past the populated count, terminating
-    // the loop. Skips the token-resolver hook + SStrCmpI cost per
-    // index by comparing GUIDs directly.
-    for (int i = 1; ; ++i) {
-        const uint64_t plateGuid = NamePlate::Events::GetGUIDByIndex(i);
-        if (plateGuid == 0)
-            break;
-        if (plateGuid == target) {
+    // Visible nameplates. The slot array is SPARSE (retail-exact slot
+    // assignment — freed middle slots stay as gaps until reused), so we
+    // scan `1..GetSlotCount()` and skip empties rather than stopping at
+    // the first 0. Compares GUIDs directly, skipping the token-resolver
+    // hook + SStrCmpI cost per index.
+    const int plateCount = NamePlate::Events::GetSlotCount();
+    for (int i = 1; i <= plateCount; ++i) {
+        if (NamePlate::Events::GetGUIDByIndex(i) == target) {
            std::snprintf(buf, bufSize, "nameplate%d", i);
            return buf;
        }
@@ -8,9 +8,10 @@
 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 // PURPOSE. See the GNU General Public License for more details.

-// Modern power-API polyfill: `UnitPower(unit [, type])`,
-// `UnitPowerMax(unit [, type])`, and an extended `UnitPowerType(unit)`
-// that returns the modern 2-tuple `(powerType, powerToken)`.
+// Modern power-API polyfill: `UnitPower(unit [, type [, unmodified]])`,
+// `UnitPowerMax(unit [, type [, unmodified]])`, `UnitPowerMissing(unit
+// [, type [, unmodified]])`, and an extended `UnitPowerType(unit)` that
+// returns the modern 2-tuple `(powerType, powerToken)`.
 //
 // Shape modeled on 3.3.5's `Script_UnitPower` (`0x0060ED40` in the
 // Frostmourne client) and `Script_UnitPowerMax` (`0x0060EF40`). The
@@ -146,7 +147,7 @@ bool ResolveArgs(void *L, const uint8_t **outDesc, int *outType) {
 // vanilla).
 static int __fastcall Script_UnitPower(void *L) {
    if (!Game::Lua::IsString(L, 1)) {
-        Game::Lua::Error(L, "Usage: UnitPower(\"unit\" [, type])");
+        Game::Lua::Error(L, "Usage: UnitPower(\"unit\" [, type [, unmodified]])");
        return 0;
    }
    const uint8_t *desc;
@@ -157,7 +158,9 @@ static int __fastcall Script_UnitPower(void *L) {
    }
    const uint32_t raw = *reinterpret_cast<const uint32_t *>(
        desc + Offsets::OFF_UNIT_FIELD_POWER1 + type * 4);
-    const uint32_t divisor = PowerDivisor(type);
+    // `unmodified` (arg 3, truthy) returns the raw internal value; otherwise
+    // apply the per-type display divisor. Matches retail's third UnitPower arg.
+    const uint32_t divisor = Game::Lua::ToBoolean(L, 3) ? 1u : PowerDivisor(type);
    Game::Lua::PushNumber(L, static_cast<double>(raw / divisor));
    return 1;
 }
@@ -167,7 +170,7 @@ static int __fastcall Script_UnitPower(void *L) {
 // `UnitPower`.
 static int __fastcall Script_UnitPowerMax(void *L) {
    if (!Game::Lua::IsString(L, 1)) {
-        Game::Lua::Error(L, "Usage: UnitPowerMax(\"unit\" [, type])");
+        Game::Lua::Error(L, "Usage: UnitPowerMax(\"unit\" [, type [, unmodified]])");
        return 0;
    }
    const uint8_t *desc;
@@ -178,11 +181,46 @@ static int __fastcall Script_UnitPowerMax(void *L) {
    }
    const uint32_t raw = *reinterpret_cast<const uint32_t *>(
        desc + Offsets::OFF_UNIT_FIELD_MAXPOWER1 + type * 4);
-    const uint32_t divisor = PowerDivisor(type);
+    const uint32_t divisor = Game::Lua::ToBoolean(L, 3) ? 1u : PowerDivisor(type);
    Game::Lua::PushNumber(L, static_cast<double>(raw / divisor));
    return 1;
 }

+// `UnitPowerMissing("unit" [, powerType [, unmodified]])` — the power
+// deficit, i.e. `UnitPowerMax - UnitPower` for the given type. Same arg
+// shape and fallbacks as `UnitPower`; `unmodified` (arg 3, truthy) skips
+// the display divisor and returns the raw internal deficit, mirroring
+// retail's third `UnitPower` arg.
+//
+// Computed as the difference of the two DISPLAY values (each integer-divided
+// by the per-type divisor), NOT by dividing the raw difference — so it equals
+// `UnitPowerMax(...) - UnitPower(...)` exactly. For rage those diverge:
+// raw 1000/55 displays as 100/5, giving a deficit of 95, whereas
+// `(1000-55)/10` truncates to 94.
+static int __fastcall Script_UnitPowerMissing(void *L) {
+    if (!Game::Lua::IsString(L, 1)) {
+        Game::Lua::Error(
+            L, "Usage: UnitPowerMissing(\"unit\" [, powerType [, unmodified]])");
+        return 0;
+    }
+    const uint8_t *desc;
+    int type;
+    if (!ResolveArgs(L, &desc, &type)) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    const uint32_t cur = *reinterpret_cast<const uint32_t *>(
+        desc + Offsets::OFF_UNIT_FIELD_POWER1 + type * 4);
+    const uint32_t max = *reinterpret_cast<const uint32_t *>(
+        desc + Offsets::OFF_UNIT_FIELD_MAXPOWER1 + type * 4);
+    const uint32_t divisor = Game::Lua::ToBoolean(L, 3) ? 1u : PowerDivisor(type);
+    const uint32_t curDisp = cur / divisor;
+    const uint32_t maxDisp = max / divisor;
+    Game::Lua::PushNumber(
+        L, static_cast<double>(maxDisp > curDisp ? maxDisp - curDisp : 0u));
+    return 1;
+}
+
 // `UnitPowerType(unit)` — extended to return `(powerType, powerToken)`.
 // Vanilla 1.12's implementation pushes only the integer; we chain
 // to the engine's original (`0x00517940`) to preserve its full
@@ -210,6 +248,7 @@ static int __fastcall Script_UnitPowerType(void *L) {
 static void RegisterLuaFunctions() {
    Game::Lua::RegisterGlobalFunction("UnitPower", &Script_UnitPower);
    Game::Lua::RegisterGlobalFunction("UnitPowerMax", &Script_UnitPowerMax);
+    Game::Lua::RegisterGlobalFunction("UnitPowerMissing", &Script_UnitPowerMissing);
    Game::Lua::RegisterGlobalFunction("UnitPowerType", &Script_UnitPowerType);
    Game::Lua::RegisterIntegerEnum(
        "Enum", "PowerType",
@@ -0,0 +1,92 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `UnitSpellHaste(unit)` — backport of the TBC+ spell-haste getter to 1.12,
+// which has no native haste API. It reads UNIT_MOD_CAST_SPEED (the cast-time
+// multiplier at descriptor +0x22c that the server folds into
+// `SpellEntry::GetCastTime` — `castTime *= GetFloatValue(UNIT_MOD_CAST_SPEED)`)
+// and converts it to the modern haste PERCENTAGE:
+//
+//   haste% = (1 / modCastSpeed - 1) * 100
+//
+// so `1.0` (no modifier) -> `0`, `0.5` (half cast time) -> `100`, and a
+// slowing effect like Curse of Tongues (`modCastSpeed > 1.0`) -> a negative
+// value. This is the same field nampower surfaces raw as `modCastSpeed`;
+// `UnitSpellHaste` is the Blizzard-shaped percentage over it, so addons can
+// drop the `GetUnitField("player", "modCastSpeed")` nampower dependency.
+// (Consumers that need the raw multiplier can recover it as
+// `1 / (1 + UnitSpellHaste(unit) / 100)`.)
+//
+// Vanilla has very few caster-haste sources, so this reads `0` for most
+// casters most of the time — the value is meaningful for Curse of Tongues,
+// Nature's Grace, and the handful of other cast-speed effects (and, as the
+// cast-time work showed, whatever bleeds into the field for hunter shots).
+
+#include "Game.h"
+#include "Offsets.h"
+
+#include <cstdint>
+
+namespace Unit::SpellHaste {
+
+namespace {
+
+using ResolveUnitToken_t = void *(__fastcall *)(const char *token);
+
+const uint8_t *Descriptor(const uint8_t *unit) {
+    if (unit == nullptr)
+        return nullptr;
+    return *reinterpret_cast<const uint8_t *const *>(
+        unit + Offsets::OFF_CGUNIT_OBJECT_FIELDS);
+}
+
+const uint8_t *ResolveUnit(const char *token) {
+    if (token == nullptr)
+        return nullptr;
+    auto fn = reinterpret_cast<ResolveUnitToken_t>(Offsets::FUN_RESOLVE_UNIT_TOKEN);
+    return static_cast<const uint8_t *>(fn(token));
+}
+
+// `UnitSpellHaste("unit")` — spell haste percentage. `0` for an unhasted or
+// invalid unit; negative for a slowed one (Curse of Tongues).
+static int __fastcall Script_UnitSpellHaste(void *L) {
+    if (!Game::Lua::IsString(L, 1)) {
+        Game::Lua::Error(L, "Usage: UnitSpellHaste(\"unit\")");
+        return 0;
+    }
+    const uint8_t *desc = Descriptor(ResolveUnit(Game::Lua::ToString(L, 1)));
+    if (desc == nullptr) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    const float mult = *reinterpret_cast<const float *>(
+        desc + Offsets::OFF_UNIT_MOD_CAST_SPEED);
+    // `mult` is the cast-time multiplier; haste% is its inverse deviation from
+    // 1.0. Guard a non-positive / uninitialized field against div-by-zero
+    // (treat it as "no haste").
+    const double haste = (mult > 0.0f)
+                             ? (1.0 / static_cast<double>(mult) - 1.0) * 100.0
+                             : 0.0;
+    Game::Lua::PushNumber(L, haste);
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("UnitSpellHaste", &Script_UnitSpellHaste);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Unit::SpellHaste
@@ -0,0 +1,128 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// Replicates the engine's per-unit "watch descriptor fields → fire per-token
+// unit events" registration (`FUN_0051bbb0` / `FUN_0051bdb0`) so synthetic
+// tokens can be made first-class. The engine reaches this from
+// `FUN_0060c520`, which recomputes a unit's token-category mask
+// (target/party/raid/pet/mouseover) at `unit+0xc90` and, on a 0→nonzero
+// transition, registers a bank-UNIT observer on every named event field with
+// callback `FUN_0051bd50` → `FUN_00515e50(guid, eventId)` → the GUID→token
+// reverse map `FUN_00515c50` → fire the event once per token.
+//
+// We register the same field set with a caller-supplied callback instead, so
+// the caller fires its own token. The field set / sizes are read from the
+// static event-name table exactly as the engine does; see the
+// FUN_DESC_OBSERVER_REGISTER block in Offsets.h.
+//
+// Cross-checked against nampower's offsets.hpp: `SendUnitSignal` (the
+// broadcast) = `0x00515e50`, `StringParamFormat` ("%s") = `0x0082E280`,
+// `SignalEventParam` = `0x00703F50`, `UNIT_HEALTH` = 16 — all consistent with
+// the field-index-is-event-id derivation here. (nampower left its
+// `GetNamesFromGUID` reverse-map offset as an unfilled TODO; it is
+// `FUN_00515c50`.)
+
+#include "unit/TokenObserver.h"
+
+#include "Offsets.h"
+
+#include <cstdint>
+
+namespace Unit::TokenObserver {
+
+namespace {
+
+using Register_t = void(__fastcall *)(int bank, uint32_t fieldOffset,
+                                      uint32_t guidLo, uint32_t guidHi, int size,
+                                      const void *callback, void *userArg1,
+                                      void *userArg2);
+using Unregister_t = void(__fastcall *)(int bank, uint32_t fieldOffset,
+                                        uint32_t guidLo, uint32_t guidHi,
+                                        const void *callback, void *userArg1);
+
+const char *const *EventNames() {
+    return reinterpret_cast<const char *const *>(
+        static_cast<uintptr_t>(Offsets::VAR_EVENT_NAME_TABLE_STATIC));
+}
+
+// Both register and unregister funnel through `FUN_00464890`, which
+// dereferences the client/player-rooted observer registry at
+// `[VAR_LOCAL_PLAYER_PTR]` (reads its `+0x24` mask). That root is NULL out of
+// world — login screen, loading screens, logout teardown — where the engine
+// helper null-derefs (crash: `MOV EAX,[EDX+0x24]`, EDX=0). Bail when it isn't
+// up: there are no live objects or observer nodes to touch anyway (nodes die
+// with their objects during teardown), and in-world callers re-register/clean
+// up on the next tick. Unlike `Player::Equipment` (which only ever registers
+// from the enter-world hook), our consumers register from Lua / WorldTick,
+// which can run mid-transition — hence the guard here.
+bool RegistryReady() {
+    return *reinterpret_cast<void *const volatile *>(
+               static_cast<uintptr_t>(Offsets::VAR_LOCAL_PLAYER_PTR)) != nullptr;
+}
+
+// Bytes the engine watches for the observer on event index `i` — verbatim
+// from `FUN_0051bbb0`'s size switch. The 8-byte entries are the 64-bit GUID
+// fields; index 0x29 (`UNIT_FIELD_AURA`) spans the whole 0xD8 aura block.
+int SizeForIndex(int i) {
+    switch (i) {
+    case 0:
+    case 2:
+    case 4:
+    case 10:
+        return 8;
+    case 0x29:
+        return 0xD8;
+    case 0x6B:
+        return 0x30;
+    case 0xA7:
+    case 0xAE:
+        return 0x1C;
+    default:
+        return 4;
+    }
+}
+
+} // namespace
+
+void Register(uint64_t guid, FieldCallback cb) {
+    if (guid == 0 || cb == nullptr || !RegistryReady())
+        return;
+    auto reg = reinterpret_cast<Register_t>(Offsets::FUN_DESC_OBSERVER_REGISTER);
+    const char *const *names = EventNames();
+    const uint32_t lo = static_cast<uint32_t>(guid);
+    const uint32_t hi = static_cast<uint32_t>(guid >> 32);
+    for (int i = 0; i < Offsets::EVENT_NAME_UNIT_MAX; ++i) {
+        if (names[i] == nullptr)
+            continue; // unnamed slot → not a real unit event
+        reg(Offsets::DESC_OBSERVER_BANK_UNIT, static_cast<uint32_t>(i * 4), lo, hi,
+            SizeForIndex(i), reinterpret_cast<const void *>(cb), nullptr, nullptr);
+    }
+}
+
+void Unregister(uint64_t guid, FieldCallback cb) {
+    if (guid == 0 || cb == nullptr || !RegistryReady())
+        return;
+    auto unreg =
+        reinterpret_cast<Unregister_t>(Offsets::FUN_DESC_OBSERVER_UNREGISTER);
+    const char *const *names = EventNames();
+    const uint32_t lo = static_cast<uint32_t>(guid);
+    const uint32_t hi = static_cast<uint32_t>(guid >> 32);
+    for (int i = 0; i < Offsets::EVENT_NAME_UNIT_MAX; ++i) {
+        if (names[i] == nullptr)
+            continue;
+        unreg(Offsets::DESC_OBSERVER_BANK_UNIT, static_cast<uint32_t>(i * 4), lo, hi,
+              reinterpret_cast<const void *>(cb), nullptr);
+    }
+}
+
+} // namespace Unit::TokenObserver
@@ -0,0 +1,52 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <cstdint>
+
+namespace Unit::TokenObserver {
+
+// Descriptor-field observer callback — the engine's __AUCMirrorHandler__ node
+// ABI (see the FUN_DESC_OBSERVER_REGISTER block in Offsets.h): return 1,
+// callee cleans 0x10. `fieldOffset` is the bank-relative offset as registered;
+// the corresponding unit event id is `fieldOffset >> 2` (the descriptor field
+// index equals the unit event id — health field +0x40 → event 16 =
+// `UNIT_HEALTH`).
+using FieldCallback = int(__fastcall *)(uint32_t fieldOffset, uint32_t size,
+                                        uint32_t guidLo, uint32_t guidHi,
+                                        const uint32_t *oldValue, void *userArg);
+
+// Register / unregister the engine's *complete* unit-event descriptor-field
+// observer set for `guid`, dispatching to `cb` on each watched field change.
+// Mirrors the engine's own `FUN_0051bbb0` / `FUN_0051bdb0` (identical field
+// set + per-field watched sizes), so `cb` fires for exactly the fields the
+// engine treats as token-scoped unit events (`UNIT_HEALTH`, `UNIT_MANA`,
+// `UNIT_AURA`, `UNIT_LEVEL`, …).
+//
+// This makes a synthetic token (focus, nameplateN) a first-class unit-event
+// source: the engine only registers these observers for its own tokens
+// (target/party/raid/pet/mouseover via the `unit+0xc90` watch mask), so a
+// focused mob that isn't otherwise one of them fires no unit events until we
+// watch it ourselves. The registrar appends a fresh node per (guid, field)
+// with no dedup, so our observer coexists with the engine's — a unit that is
+// simultaneously the target keeps firing `"target"` while ours fires its own
+// token. Unregister is a safe no-op once the object is gone (the engine frees
+// observer nodes with the object).
+//
+// `cb` runs inside SMSG_UPDATE_OBJECT dispatch; firing engine events from it
+// is sanctioned (the engine's own callback `FUN_0051bd50` does exactly that).
+void Register(uint64_t guid, FieldCallback cb);
+void Unregister(uint64_t guid, FieldCallback cb);
+
+} // namespace Unit::TokenObserver