From dfe8cea6926e5e0908518b2465cdf9c410a43fad Mon Sep 17 00:00:00 2001
From: OEVG <950+oevg@noreply.octowow.st>
Date: Wed, 4 Nov 2026 14:03:16 -0400
Subject: [PATCH] Release 3.8.1: streamline ClassicAPI support and fix action
 bars

---
 CHANGELOG.md                      |  11 +
 Docs/EXTRAS_MERGE.md              |  13 +
 README.md                         |  10 +-
 ShaguTweaks.toc                   |   5 +-
 api.lua                           |  32 +--
 libs/libdebuff.lua                | 378 ------------------------------
 libs/libnameplate.lua             |  15 +-
 locales/translations_enUS.lua     |   2 -
 main.lua                          |   8 +
 mods/actionbar-grid.lua           |  27 +++
 mods/auto-dismount.lua            | 121 ----------
 mods/turtle-wow.lua               |  48 ----
 mods/unitframes-bighealth.lua     |  10 +-
 tests/README.md                   |   2 +
 tests/test_actionbar_grid.lua     |  16 ++
 tests/test_bighealth_split.lua    |  14 +-
 tests/test_classicapi_runtime.lua |  42 ++++
 17 files changed, 154 insertions(+), 600 deletions(-)
 delete mode 100644 libs/libdebuff.lua
 create mode 100644 mods/actionbar-grid.lua
 delete mode 100644 mods/auto-dismount.lua
 create mode 100644 tests/test_actionbar_grid.lua
 create mode 100644 tests/test_classicapi_runtime.lua

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8834bd1..dbd816f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,17 @@ Changes in this fork (OEVG/ShaguTweaks-ClassicAPI), newest first. Each entry is
 
 This fork is based on [Dusk/ShaguTweaks-ClassicAPI](https://octowow.st/git/Dusk/ShaguTweaks-ClassicAPI) at commit `4391564` (2026-09-08). Earlier changes are in that repository's history.
 
+## 3.8.1 — 2026-11-04 — ClassicAPI baseline and legacy cleanup
+
+- Remove Auto Dismount, its TurtleWoW patches, unused API wrappers and obsolete saved toggle in favor of ClassicAPI's Auto Dismount, Auto Stand and Auto Cancel Form settings. Retain Auto Stance: it enters a required stance/form rather than cancelling one.
+- Extend the native Always Show Action Bars preference to empty main/bonus-bar slots, preserving native drag-grid references and setting toggles.
+- Fix disappearing Big Health fills after health updates in standalone mode: copy the hidden name background's RGB color without its zero alpha.
+- Require ClassicAPI 1.18.10 or newer and check the loaded DLL plus core timer/nameplate APIs before enabling tweaks. Missing or outdated runtimes show an update/restart message.
+- Remove the unused legacy debuff-timing library after Debuff Timer's removal in 3.8, including its TurtleWoW Paladin/Warlock spell-damage listener.
+- Remove per-frame legacy nameplate discovery. Remaining theme integration uses deferred native nameplate events and stays dormant without consumers.
+- Retain optional feature and missing-data checks, SuperWoW cast support, and compatibility paths not yet proven redundant. This is a selective cleanup, not removal of every fallback.
+- Fifteen Lua 5.0 regression suites pass. In-game rendering, startup on installed client versions and CPU/memory differences still require user verification.
+
 ## 3.8 — 2026-11-04 — Player frames, movable bars and UI polish
 
 ### Added
diff --git a/Docs/EXTRAS_MERGE.md b/Docs/EXTRAS_MERGE.md
index 8d0d9f1..a0f639e 100644
--- a/Docs/EXTRAS_MERGE.md
+++ b/Docs/EXTRAS_MERGE.md
@@ -52,6 +52,7 @@ The textures these modules use (the gryphons and the XP bar) moved to this addon
 |---|---|---|
 | **Key-Down Casting** and **Alt Self-Cast** | 3.7.1 | ClassicAPI now has the game's own `ActionButtonUseKeyDown` setting. Type `/console ActionButtonUseKeyDown 1` once instead. Details in the [changelog](../CHANGELOG.md). |
 | **Debuff Timer** | 3.8 | [TargetFrameBuff](https://octowow.st/git/OEVG/TargetFrameBuff) already provides target buff/debuff countdowns with ClassicAPI. Use its timer settings instead of running overlapping timers in ShaguTweaks. |
+| **Auto Dismount** | 3.8.1 | ClassicAPI provides Auto Dismount, Auto Stand and Auto Cancel Form. See [replacement settings below](#auto-dismount-replacement-381). Auto Stance remains a separate feature. |
 | **Nameplate Castbar**, **Nameplate Scale** and **Nameplate Class Colors** | 3.8 | Enabling these together with another nameplate addon can cause conflicts because both addons modify the same nameplates. Use one dedicated nameplate addon instead; alternatives are listed below. |
 
 ### Nameplate alternatives
@@ -61,3 +62,15 @@ Choose one to handle your nameplates:
 - [BlizzNameplatesPlus](https://github.com/Wurmschwanz/BlizzNameplatesPlus) for a similar Blizzard-like appearance.
 - [UnitPlates](https://github.com/Redbu11dev/UnitPlates) for more detailed nameplates.
 - [ShaguPlates](https://github.com/Dinkleberrrg/ShaguPlates) for extensive customization.
+
+### Auto Dismount replacement (3.8.1)
+
+ShaguTweaks' **Auto Dismount** option was removed because ClassicAPI provides
+**Auto Dismount** (`autoDismount`), **Auto Stand** (`autoStand`) and
+**Auto Cancel Form** (`autoUnshift`) in its options. The old module combined
+these behaviors; enable the ClassicAPI options you want. ShaguTweaks does not
+change these settings automatically.
+
+**Auto Stance** remains available: it tries to switch into a warrior stance or
+druid form required by a spell. ClassicAPI's **Auto Cancel Form** instead leaves
+a form when a spell cannot be cast in it; it does not replace Auto Stance.
diff --git a/README.md b/README.md
index 1ad2855..c480fd7 100644
--- a/README.md
+++ b/README.md
@@ -9,17 +9,17 @@ This is an English-only customization of [Dusk/ShaguTweaks-ClassicAPI](https://o
 
 > This fork requires ClassicAPI and targets **Turtle WoW-like server/client environments**.
 
-**Version 3.8.** What changed in each update: see the [changelog](CHANGELOG.md).
+**Version 3.8.1.** What changed in each update: see the [changelog](CHANGELOG.md).
 
 > **Upgrading to 3.7:** the modules of the separate *ShaguTweaks Extras ClassicAPI* addon are now built into ShaguTweaks. **Disable or delete `ShaguTweaks-extras`** after updating, otherwise its older copies replace the built-in ones. Your on/off settings carry over. Raid Frames, Bag Item Click, Bag Search Bar and Auction Alt-Buy were not merged. See [Docs/EXTRAS_MERGE.md](Docs/EXTRAS_MERGE.md) for where each module went and why some were left out.
 
 ## 🔌 Requirements
 
-- **[ClassicAPI](https://github.com/brues-code/ClassicAPI) — required.** Install both the DLL and its bundled `!!!ClassicAPI` addon, and restart the client after a DLL update. v1.18.10 or newer is recommended (it includes a crash fix for addons that restyle nameplates). The integration was last reviewed against v1.18.13; see [Docs/CLASSICAPI_UPDATES.md](Docs/CLASSICAPI_UPDATES.md).
+- **[ClassicAPI](https://github.com/brues-code/ClassicAPI) — required.** Install both the DLL and its bundled `!!!ClassicAPI` addon, and restart the client after a DLL update. v1.18.10 or newer is required (it includes a crash fix for addons that restyle nameplates). The addon checks the loaded DLL version and core APIs before enabling tweaks. The integration was last reviewed against v1.18.13; see [Docs/CLASSICAPI_UPDATES.md](Docs/CLASSICAPI_UPDATES.md).
 - **[SuperWoW](https://github.com/balakethelock/SuperWoW) — optional / recommended.** Only used as an additional fallback for some cast/GUID information.
 - **[ShaguTweaks Extras ClassicAPI](https://octowow.st/git/Dusk/ShaguTweaks-Extras-ClassicAPI) — no longer needed.** Its modules are built in since 3.7 (see [Docs/EXTRAS_MERGE.md](Docs/EXTRAS_MERGE.md)). Disable or remove it; while it is enabled, its copies replace the built-in ones.
 
-ClassicAPI is the main API layer.
+ClassicAPI is the main API layer. Use its **Auto Dismount**, **Auto Stand** and **Auto Cancel Form** settings; ShaguTweaks' duplicate Auto Dismount option was removed in 3.8.1. See the [migration guide](Docs/EXTRAS_MERGE.md#auto-dismount-replacement-381).
 
 ## 📦 Installation
 
@@ -103,7 +103,6 @@ Modules that use ClassicAPI directly:
 
 - Range Color
 - AoE Loot
-- Auto Dismount
 - Chat Tweaks
 - Equip Compare
 - Free Slot Count
@@ -138,8 +137,7 @@ Names match the in-game options list. Modules marked *(off)* are disabled until
 
 ### Action Bar
 
-- Auto Dismount
-- Auto Stance
+- Auto Stance (enters a required stance/form; distinct from ClassicAPI Auto Cancel Form)
 - Range Color *(off)*
 - Cooldown Numbers
 - Hide Gryphons *(off)*
diff --git a/ShaguTweaks.toc b/ShaguTweaks.toc
index 7b1ffe9..1ea44b1 100644
--- a/ShaguTweaks.toc
+++ b/ShaguTweaks.toc
@@ -2,7 +2,7 @@
 ## Title: |cffffcc00Shagu|cffffffffTweaks |cffcccccc[ClassicAPI]
 ## Author: Shagu
 ## Notes: A collection of tweaks and enhancements to the Default UI
-## Version: 3.8
+## Version: 3.8.1
 ## Dependencies: !!!ClassicAPI
 ## SavedVariables: ShaguTweaks_player_cache, ShaguTweaks_social_cache
 ## SavedVariablesPerCharacter: ShaguTweaks_config, ShaguTweaks_cache
@@ -23,7 +23,6 @@ config.lua
 libs\libtipscan.lua
 libs\libspell.lua
 libs\libcast.lua
-libs\libdebuff.lua
 libs\libunitscan.lua
 libs\libnameplate.lua
 libs\libpredict.lua
@@ -54,7 +53,6 @@ mods\move-unitframes.lua
 mods\target-castbar.lua
 mods\social-colors.lua
 mods\item-colors.lua
-mods\auto-dismount.lua
 mods\auto-stance.lua
 mods\tooltip-details.lua
 mods\hide-errors.lua
@@ -76,6 +74,7 @@ mods\turtle-wow.lua
 mods\superwow.lua
 mods\reduced-actionbar.lua
 mods\actionbar-move.lua
+mods\actionbar-grid.lua
 mods\no-toggle.lua
 mods\aoe-loot.lua
 mods\loot-cursor.lua
diff --git a/api.lua b/api.lua
index 69d763e..194ff84 100644
--- a/api.lua
+++ b/api.lua
@@ -7,6 +7,16 @@ ShaguTweaks.API = ShaguTweaks.API or {}
 local API = ShaguTweaks.API
 
 API.classicapi_version = tonumber(_G.CLASSIC_API_VERSION) or 0
+API.minimum_version = 11810
+API.minimum_version_text = "1.18.10"
+API.IsSupportedRuntime = function()
+  -- The addon dependency checks the companion addon, not the loaded DLL.
+  return (tonumber(_G.CLASSIC_API_VERSION) or 0) >= API.minimum_version
+    and type(_G.C_Timer) == "table" and type(_G.C_Timer.After) == "function"
+    and type(_G.C_EventUtils) == "table" and type(_G.C_EventUtils.IsEventValid) == "function"
+    and type(_G.C_NamePlate) == "table" and type(_G.C_NamePlate.GetNamePlateForUnit) == "function"
+    and _G.C_EventUtils.IsEventValid("NAME_PLATE_UNIT_ADDED")
+end
 API.classicapi = type(_G.C_NamePlate) == "table"
   or type(_G.C_Spell) == "table"
   or type(_G.C_UnitAuras) == "table"
@@ -130,11 +140,6 @@ API.aoeloot = type(_G.C_Loot) == "table"
 API.overridebindings = type(_G.SetOverrideBindingClick) == "function"
   and type(_G.ClearOverrideBindings) == "function"
 
-API.playerstate = type(_G.IsMounted) == "function"
-  and type(_G.Dismount) == "function"
-  and type(_G.GetShapeshiftFormID) == "function"
-  and type(_G.CancelShapeshiftForm) == "function"
-
 API.unitguid = type(_G.UnitGUID) == "function"
 API.unittoken = type(_G.UnitTokenFromGUID) == "function"
 API.tooltipunit = _G.GameTooltip
@@ -756,23 +761,6 @@ API.SellAllJunkItems = function()
   end
 end
 
-API.IsMounted = function()
-  return API.playerstate and _G.IsMounted() or false
-end
-
-API.Dismount = function()
-  if API.playerstate then return _G.Dismount() end
-end
-
-API.GetShapeshiftFormID = function()
-  if API.playerstate then return _G.GetShapeshiftFormID() end
-  return 0
-end
-
-API.CancelShapeshiftForm = function()
-  if API.playerstate then return _G.CancelShapeshiftForm() end
-end
-
 API.UnitGUID = function(unit)
   if API.unitguid then
     return _G.UnitGUID(unit)
diff --git a/libs/libdebuff.lua b/libs/libdebuff.lua
deleted file mode 100644
index f8868e5..0000000
--- a/libs/libdebuff.lua
+++ /dev/null
@@ -1,378 +0,0 @@
-local _G = ShaguTweaks.GetGlobalEnv()
-local L = ShaguTweaks.L
-local API = ShaguTweaks.API
-local GetExpansion = ShaguTweaks.GetExpansion
-local libtipscan = ShaguTweaks.libtipscan
-local libspell = ShaguTweaks.libspell
-local hooksecurefunc = ShaguTweaks.hooksecurefunc
-local QueueFunction = ShaguTweaks.QueueFunction
-local cmatch = ShaguTweaks.cmatch
-
--- return instantly if we're not on a vanilla client
-if GetExpansion() ~= "vanilla" then return end
-
--- fix a typo (missing $) in ruRU capture index
-if GetLocale() == "ruRU" then
-  SPELLREFLECTSELFOTHER = gsub(SPELLREFLECTSELFOTHER, "%%2s", "%%2%$s")
-end
-
-local libdebuff = CreateFrame("Frame", "ShaguTweaksDebuffsScanner", UIParent)
-local scanner
-local function GetScanner()
-  if not scanner then
-    scanner = libtipscan:GetScanner("libdebuff")
-  end
-  return scanner
-end
-local _, class = UnitClass("player")
-local lastspell
-local useClassicAuraTiming = API and API.aurapositional and API.UnitDebuff
-
-function libdebuff:GetDuration(effect, rank)
-  if L["debuffs"][effect] then
-    local rank = rank and tonumber((string.gsub(rank, RANK .. " ", ""))) or 0
-    local rank = L["debuffs"][effect][rank] and rank or libdebuff:GetMaxRank(effect)
-    local duration = L["debuffs"][effect][rank]
-
-    if effect == L["dyndebuffs"]["Rupture"] then
-      -- Rupture: +2 sec per combo point
-      duration = duration + GetComboPoints()*2
-    elseif effect == L["dyndebuffs"]["Kidney Shot"] then
-      -- Kidney Shot: +1 sec per combo point
-      duration = duration + GetComboPoints()*1
-    elseif effect == L["dyndebuffs"]["Demoralizing Shout"] then
-      -- Booming Voice: 10% per talent
-      local _,_,_,_,count = GetTalentInfo(2,1)
-      if count and count > 0 then duration = duration + ( duration / 100 * (count*10)) end
-    elseif effect == L["dyndebuffs"]["Shadow Word: Pain"] then
-      -- Improved Shadow Word: Pain: +3s per talent
-      local _,_,_,_,count = GetTalentInfo(3,4)
-      if count and count > 0 then duration = duration + count * 3 end
-    elseif effect == L["dyndebuffs"]["Frostbolt"] then
-      -- Permafrost: +1s per talent
-      local _,_,_,_,count = GetTalentInfo(3,7)
-      if count and count > 0 then duration = duration + count end
-    elseif effect == L["dyndebuffs"]["Gouge"] then
-      -- Improved Gouge: +.5s per talent
-      local _,_,_,_,count = GetTalentInfo(2,1)
-      if count and count > 0 then duration = duration + (count*.5) end
-    end
-    return duration
-  else
-    return 0
-  end
-end
-
-function libdebuff:UpdateDuration(unit, unitlevel, effect, duration)
-  if not unit or not effect or not duration then return end
-  unitlevel = unitlevel or 0
-
-  if libdebuff.objects[unit] and libdebuff.objects[unit][unitlevel] and libdebuff.objects[unit][unitlevel][effect] then
-    libdebuff.objects[unit][unitlevel][effect].duration = duration
-  end
-end
-
-function libdebuff:GetMaxRank(effect)
-  local max = 0
-  for id in pairs(L["debuffs"][effect]) do
-    if id > max then max = id end
-  end
-  return max
-end
-
-function libdebuff:UpdateUnits()
-  TargetDebuffButton_Update()
-end
-
-function libdebuff:AddPending(unit, unitlevel, effect, duration)
-  if not unit then return end
-  if not L["debuffs"][effect] then return end
-
-  duration = duration or libdebuff:GetDuration(effect)
-  if duration > 0 and libdebuff.pending[3] ~= effect then
-    libdebuff.pending[1] = unit
-    libdebuff.pending[2] = unitlevel or 0
-    libdebuff.pending[3] = effect
-    libdebuff.pending[4] = duration
-  end
-end
-
-function libdebuff:RemovePending()
-  libdebuff.pending[1] = nil
-  libdebuff.pending[2] = nil
-  libdebuff.pending[3] = nil
-  libdebuff.pending[4] = nil
-end
-
-function libdebuff:PersistPending(effect)
-  if not libdebuff.pending[3] then return end
-  if libdebuff.pending[3] == effect or ( effect == nil and libdebuff.pending[3] ) then
-    libdebuff:AddEffect(libdebuff.pending[1], libdebuff.pending[2], libdebuff.pending[3], libdebuff.pending[4])
-    libdebuff:RemovePending()
-  end
-end
-
-function libdebuff:RevertLastAction()
-  lastspell.start = lastspell.start_old
-  lastspell.start_old = nil
-  libdebuff:UpdateUnits()
-end
-
-function libdebuff:AddEffect(unit, unitlevel, effect, duration, deferUpdate)
-  if not unit or not effect then return end
-  unitlevel = unitlevel or 0
-  if not libdebuff.objects[unit] then libdebuff.objects[unit] = {} end
-  if not libdebuff.objects[unit][unitlevel] then libdebuff.objects[unit][unitlevel] = {} end
-  if not libdebuff.objects[unit][unitlevel][effect] then libdebuff.objects[unit][unitlevel][effect] = {} end
-
-  -- save current effect as lastspell
-  lastspell = libdebuff.objects[unit][unitlevel][effect]
-
-  libdebuff.objects[unit][unitlevel][effect].effect = effect
-  libdebuff.objects[unit][unitlevel][effect].start_old = libdebuff.objects[unit][unitlevel][effect].start
-  libdebuff.objects[unit][unitlevel][effect].start = GetTime()
-  libdebuff.objects[unit][unitlevel][effect].duration = duration or libdebuff:GetDuration(effect)
-
-  if not deferUpdate then
-    libdebuff:UpdateUnits()
-  end
-end
-
--- ClassicAPI exposes aura identity and timing directly. The old periodic
--- combat-text parser only exists to reconstruct off-target applications on
--- older ClassicAPI builds; current ClassicAPI does not register those noisy
--- events at all.
-if not useClassicAuraTiming then
-  libdebuff:RegisterEvent("CHAT_MSG_SPELL_PERIODIC_HOSTILEPLAYER_DAMAGE")
-  libdebuff:RegisterEvent("CHAT_MSG_SPELL_PERIODIC_CREATURE_DAMAGE")
-  libdebuff:RegisterEvent("CHAT_MSG_SPELL_FAILED_LOCALPLAYER")
-  libdebuff:RegisterEvent("CHAT_MSG_SPELL_SELF_DAMAGE")
-  libdebuff:RegisterEvent("SPELLCAST_STOP")
-end
-
--- Target changes and aura updates are still useful for the rare fallback case
--- where ClassicAPI knows an aura's duration but could not observe its original
--- application and therefore has no expirationTime.
-libdebuff:RegisterEvent("PLAYER_TARGET_CHANGED")
-libdebuff:RegisterEvent("UNIT_AURA")
-
--- register seal handler
-if class == "PALADIN" then
-  libdebuff:RegisterEvent("CHAT_MSG_COMBAT_SELF_HITS")
-end
-
--- Remove Pending
-libdebuff.rp = { SPELLIMMUNESELFOTHER, IMMUNEDAMAGECLASSSELFOTHER,
-  SPELLMISSSELFOTHER, SPELLRESISTSELFOTHER, SPELLEVADEDSELFOTHER,
-  SPELLDODGEDSELFOTHER, SPELLDEFLECTEDSELFOTHER, SPELLREFLECTSELFOTHER,
-  SPELLPARRIEDSELFOTHER, SPELLLOGABSORBSELFOTHER }
-
-libdebuff.objects = {}
-libdebuff.pending = {}
-
--- Gather Data by Events
-libdebuff:SetScript("OnEvent", function()
-  -- paladin seal refresh
-  if event == "CHAT_MSG_COMBAT_SELF_HITS" then
-    local hit = cmatch(arg1, COMBATHITSELFOTHER)
-    local crit = cmatch(arg1, COMBATHITCRITSELFOTHER)
-    if hit or crit then
-      for seal in L["judgements"] do
-        local name = UnitName("target")
-        local level = UnitLevel("target")
-        if name and libdebuff.objects[name] then
-          if level and libdebuff.objects[name][level] and libdebuff.objects[name][level][seal] then
-            libdebuff:AddEffect(name, level, seal)
-          elseif libdebuff.objects[name][0] and libdebuff.objects[name][0][seal] then
-            libdebuff:AddEffect(name, 0, seal)
-          end
-        end
-      end
-    end
-
-  -- Add Combat Log
-  elseif event == "CHAT_MSG_SPELL_PERIODIC_HOSTILEPLAYER_DAMAGE" or event == "CHAT_MSG_SPELL_PERIODIC_CREATURE_DAMAGE" then
-    local unit, effect = cmatch(arg1, AURAADDEDOTHERHARMFUL)
-    if unit and effect then
-      local unitlevel = UnitName("target") == unit and UnitLevel("target") or 0
-      if not libdebuff.objects[unit] or not libdebuff.objects[unit][unitlevel] or not libdebuff.objects[unit][unitlevel][effect] then
-        libdebuff:AddEffect(unit, unitlevel, effect)
-      end
-    end
-
-  -- Add Missing Buffs by Iteration
-  elseif ( event == "UNIT_AURA" and arg1 == "target" ) or event == "PLAYER_TARGET_CHANGED" then
-    local unit = UnitName("target")
-    if not unit then return end
-
-    local unitlevel = UnitLevel("target") or 0
-    local changed = false
-
-    for i=1, 16 do
-      local effect, rank, texture, stacks, dtype, duration, timeleft = libdebuff:UnitDebuff("target", i)
-
-      -- abort when no further debuff was found
-      if not texture then break end
-
-      if effect and effect ~= "" and (not timeleft or timeleft < 0) then
-        -- Exact ClassicAPI timing needs no legacy cache at all. Only construct
-        -- an estimate when expirationTime is genuinely unavailable.
-        if not libdebuff.objects[unit] or not libdebuff.objects[unit][unitlevel] or not libdebuff.objects[unit][unitlevel][effect] then
-          local fallbackDuration = duration and duration > 0 and duration or nil
-          libdebuff:AddEffect(unit, unitlevel, effect, fallbackDuration, true)
-          changed = true
-        end
-      end
-    end
-
-    if changed then
-      libdebuff:UpdateUnits()
-    end
-
-  -- Update Pending Spells
-  elseif event == "CHAT_MSG_SPELL_FAILED_LOCALPLAYER" or event == "CHAT_MSG_SPELL_SELF_DAMAGE" then
-    -- Most combat messages cannot affect libdebuff. Avoid running the whole
-    -- miss/resist/immune pattern set unless there is state to repair.
-    if not libdebuff.pending[3] and not (lastspell and lastspell.start_old) then
-      return
-    end
-
-    for _, msg in pairs(libdebuff.rp) do
-      local effect = cmatch(arg1, msg)
-      if effect and libdebuff.pending[3] == effect then
-        -- instant removal of the pending spell
-        libdebuff:RemovePending()
-        return
-      elseif effect and lastspell and lastspell.start_old and lastspell.effect == effect then
-        -- late removal of debuffs (e.g hunter arrows as they hit late)
-        libdebuff:RevertLastAction()
-        return
-      end
-    end
-  elseif event == "SPELLCAST_STOP" then
-    if libdebuff.pending[3] then
-      QueueFunction(libdebuff.PersistPending)
-    end
-  end
-end)
-
--- Gather Data by User Actions.
--- Current ClassicAPI gets exact application timing from C_UnitAuras, so these
--- legacy prediction hooks are installed only when that timing surface is absent.
-if not useClassicAuraTiming then
-hooksecurefunc("CastSpell", function(id, bookType)
-  local effect, rank = GetSpellName(id, bookType)
-  if not effect or not L["debuffs"][effect] then return end
-
-  local duration = libdebuff:GetDuration(effect, rank)
-  libdebuff:AddPending(UnitName("target"), UnitLevel("target"), effect, duration)
-end)
-
-hooksecurefunc("CastSpellByName", function(effect, target)
-  if not effect then return end
-
-  -- Strip an explicit rank before checking the duration database. Reject
-  -- ordinary damage/heal casts before doing any spell metadata work.
-  local _, _, baseEffect, explicitRank = string.find(effect, "(.+)%((.+)%)")
-  local name = baseEffect or effect
-  if not L["debuffs"][name] then return end
-  if libdebuff.pending[3] == name then return end
-
-  local rank = explicitRank
-  if not rank then
-    _, rank = libspell.GetSpellInfo(name)
-  end
-
-  local duration = libdebuff:GetDuration(name, rank)
-  libdebuff:AddPending(UnitName("target"), UnitLevel("target"), name, duration)
-end)
-
-hooksecurefunc("UseAction", function(slot, target, button)
-  -- Macros are intentionally left to CastSpellByName: conditional macros can
-  -- select a different spell than their first /cast line.
-  if API and API.actioninfo and API.GetActionInfo then
-    local actionType, actionID = API.GetActionInfo(slot)
-    if actionType == "macro" or actionType == "item" then return end
-
-    if actionType == "spell" and actionID then
-      if not IsCurrentAction(slot) then return end
-      local effect, rank = API.GetSpellInfo(actionID)
-      if not effect or not L["debuffs"][effect] then return end
-      local duration = libdebuff:GetDuration(effect, rank)
-      libdebuff:AddPending(UnitName("target"), UnitLevel("target"), effect, duration)
-      return
-    elseif actionType then
-      return
-    end
-  end
-
-  if GetActionText(slot) or not IsCurrentAction(slot) then return end
-  local tip = GetScanner()
-  tip:SetAction(slot)
-  local effect, rank = tip:Line(1)
-  if not effect or not L["debuffs"][effect] then return end
-  local duration = libdebuff:GetDuration(effect, rank)
-  libdebuff:AddPending(UnitName("target"), UnitLevel("target"), effect, duration)
-end)
-end
-
-function libdebuff:UnitDebuff(unit, id)
-  local unitname = UnitName(unit)
-  local unitlevel = UnitLevel(unit)
-  local effect, texture, stacks, dtype
-  local duration, timeleft = nil, -1
-  local rank = nil -- no backport
-
-  -- ClassicAPI returns positional aura metadata without allocating a table.
-  -- When it observed the application, use its exact duration/expiration
-  -- immediately and bypass the legacy name/level estimate entirely.
-  if useClassicAuraTiming then
-    local expirationTime
-    effect, texture, stacks, dtype, duration, expirationTime =
-      API.UnitDebuff(unit, id)
-
-    if texture and duration and duration > 0
-      and expirationTime and expirationTime > 0
-    then
-      timeleft = expirationTime - GetTime()
-      if timeleft < 0 then timeleft = 0 end
-      return effect, rank, texture, stacks, dtype, duration, timeleft
-    end
-  end
-
-  -- Plain Vanilla / older ClassicAPI compatibility. Also acts as a defensive
-  -- fallback if a positional API unexpectedly failed to resolve a visible aura.
-  if not texture then
-    texture, stacks, dtype = UnitDebuff(unit, id)
-  end
-
-  if texture and (not effect or effect == "") then
-    local tip = GetScanner()
-    tip:SetUnitDebuff(unit, id)
-    effect = tip:Line(1) or ""
-  end
-
-  if libdebuff.objects[unitname] and libdebuff.objects[unitname][unitlevel] and libdebuff.objects[unitname][unitlevel][effect] then
-    -- clean up cache
-    if libdebuff.objects[unitname][unitlevel][effect].duration and libdebuff.objects[unitname][unitlevel][effect].duration + libdebuff.objects[unitname][unitlevel][effect].start < GetTime() then
-      libdebuff.objects[unitname][unitlevel][effect] = nil
-    else
-      duration = libdebuff.objects[unitname][unitlevel][effect].duration
-      timeleft = duration + libdebuff.objects[unitname][unitlevel][effect].start - GetTime()
-    end
-
-  -- no level data
-  elseif libdebuff.objects[unitname] and libdebuff.objects[unitname][0] and libdebuff.objects[unitname][0][effect] then
-    -- clean up cache
-    if libdebuff.objects[unitname][0][effect].duration and libdebuff.objects[unitname][0][effect].duration + libdebuff.objects[unitname][0][effect].start < GetTime() then
-      libdebuff.objects[unitname][0][effect] = nil
-    else
-      duration = libdebuff.objects[unitname][0][effect].duration
-      timeleft = duration + libdebuff.objects[unitname][0][effect].start - GetTime()
-    end
-  end
-
-  return effect, rank, texture, stacks, dtype, duration, timeleft
-end
-
-ShaguTweaks.libdebuff = libdebuff
diff --git a/libs/libnameplate.lua b/libs/libnameplate.lua
index 5389fa2..b231a4d 100644
--- a/libs/libnameplate.lua
+++ b/libs/libnameplate.lua
@@ -22,7 +22,6 @@ local function IsNamePlate(frame)
 end
 
 local registry = {}
-local lastParentCount = -1
 local libnameplate = CreateFrame("Frame", nil, UIParent)
 ShaguTweaks.libnameplate = libnameplate
 libnameplate.OnInit = {}
@@ -78,13 +77,6 @@ local function DiscoverNameplates()
     InitializePlate(children[index])
   end
 
-  lastParentCount = count
-end
-
-local function ScanNameplatesLegacy()
-  local count = WorldFrame:GetNumChildren()
-  if count == lastParentCount then return end
-  DiscoverNameplates()
 end
 
 local eventDriver = CreateFrame("Frame")
@@ -110,10 +102,9 @@ function libnameplate:HasConsumers()
 end
 
 function libnameplate:Enable()
-  if self.enabled then return end
+  if self.enabled or not API.IsSupportedRuntime() or not HasClassicNameplateEvents() then return end
   self.enabled = true
 
-  if HasClassicNameplateEvents() then
     -- Never enumerate WorldFrame children synchronously from the ClassicAPI
     -- nameplate event path. Defer discovery to the next rendered frame.
     ScheduleDiscovery()
@@ -124,9 +115,7 @@ function libnameplate:Enable()
     end)
 
     self:SetScript("OnUpdate", nil)
-  else
-    self:SetScript("OnUpdate", ScanNameplatesLegacy)
-  end
+
 end
 
 function libnameplate:EnableIfNeeded()
diff --git a/locales/translations_enUS.lua b/locales/translations_enUS.lua
index a9a15ea..ba9bab2 100644
--- a/locales/translations_enUS.lua
+++ b/locales/translations_enUS.lua
@@ -8,8 +8,6 @@ ShaguTweaks_translation["enUS"] = {
   ["Adds coordinates to the bottom of the World Map."] = nil,
   ["Advanced Options"] = nil,
   ["Allows to scroll using the mouse wheel, enables sticky chat channels and repeats message on arrow up."] = nil,
-  ["Auto Dismount"] = nil,
-  ["Automatically dismounts whenever a spell is casted."] = nil,
   ["Automatically switch to the required warrior or druid stance on spell cast."] = nil,
   ["Auto Stance"] = nil,
   ["Blue Shaman Class Colors"] = nil,
diff --git a/main.lua b/main.lua
index fb6d171..e5d892c 100644
--- a/main.lua
+++ b/main.lua
@@ -55,11 +55,19 @@ ShaguTweaks:SetScript("OnEvent", function()
   end
 
   -- load current expansion
+  if not ShaguTweaks.API.IsSupportedRuntime() then
+    DEFAULT_CHAT_FRAME:AddMessage("|cffff6060ShaguTweaks:|r ClassicAPI " .. ShaguTweaks.API.minimum_version_text
+      .. "+ is required. Update both its DLL and !!!ClassicAPI addon, then restart the client. Tweaks have not been enabled.")
+    return
+  end
   local expansion = ShaguTweaks:GetExpansion()
 
   -- initialize empty config
   if not ShaguTweaks_config then ShaguTweaks_config = {} end
 
+  -- Retire the removed duplicate toggle; ClassicAPI owns these preferences.
+  ShaguTweaks_config[ShaguTweaks.T["Auto Dismount"]] = nil
+
   -- Gold numbers belong to Real Health Numbers; retire the duplicate toggle.
   ShaguTweaks_config["Unit Frame Health Colors"] = nil
 
diff --git a/mods/actionbar-grid.lua b/mods/actionbar-grid.lua
new file mode 100644
index 0000000..513b3bb
--- /dev/null
+++ b/mods/actionbar-grid.lua
@@ -0,0 +1,27 @@
+-- Extend the native extra-bar preference to main/bonus action buttons.
+-- Own exactly one grid reference; drag-and-drop owns its separate reference.
+local _G = ShaguTweaks.GetGlobalEnv()
+local function UpdateGrid()
+  if not ShaguTweaks.API.IsSupportedRuntime() then return end
+  local show = _G.ALWAYS_SHOW_MULTIBARS == 1 or _G.ALWAYS_SHOW_MULTIBARS == "1"
+  for _, prefix in ipairs({"ActionButton", "BonusActionButton"}) do
+    for i = 1, 12 do
+      local button = _G[prefix .. i]
+      if button then
+        if show and not button.stAlwaysShowGrid then
+          button.stAlwaysShowGrid = true
+          ActionButton_ShowGrid(button)
+        elseif not show and button.stAlwaysShowGrid then
+          button.stAlwaysShowGrid = nil
+          ActionButton_HideGrid(button)
+        end
+      end
+    end
+  end
+end
+ShaguTweaks.hooksecurefunc("MultiActionBar_UpdateGridVisibility", UpdateGrid)
+local events = CreateFrame("Frame")
+events:RegisterEvent("PLAYER_ENTERING_WORLD")
+events:SetScript("OnEvent", function()
+  if ShaguTweaks.API.IsSupportedRuntime() then UpdateGrid() end
+end)
diff --git a/mods/auto-dismount.lua b/mods/auto-dismount.lua
deleted file mode 100644
index f3f9405..0000000
--- a/mods/auto-dismount.lua
+++ /dev/null
@@ -1,121 +0,0 @@
-local _G = ShaguTweaks.GetGlobalEnv()
-local T = ShaguTweaks.T
-local API = ShaguTweaks.API
-
-local module = ShaguTweaks:register({
-  title = T["Auto Dismount"],
-  description = T["Automatically dismounts whenever a spell is casted."],
-  expansions = { ["vanilla"] = true },
-  category = T["Action Bar"],
-  enabled = true,
-})
-
-module.enable = function(self)
-  local dismount = CreateFrame("Frame")
-  ShaguTweaks.dismount = dismount
-
-  -- Keep the legacy detection data as a compatibility fallback for custom
-  -- mounts/forms that ClassicAPI does not identify as one of the known forms.
-  dismount.strings = {
-    -- deDE
-    "^Erhöht Tempo um (.+)%%",
-    -- enUS
-    "^Increases speed by (.+)%%",
-    -- esES
-    "^Aumenta la velocidad en un (.+)%%",
-    -- frFR
-    "^Augmente la vitesse de (.+)%%",
-    -- ruRU
-    "^Скорость увеличена на (.+)%%",
-    -- koKR
-    "^이동 속도 (.+)%%만큼 증가",
-    -- zhCN
-    "^速度提高(.+)%%",
-    -- turtle-wow
-    "speed based on", "Slow and steady...", "Riding",
-    "Lento y constante...", "Aumenta la velocidad según tu habilidad de Montar.",
-    "根据您的骑行技能提高速度。", "根据骑术技能提高速度。", "又慢又稳......",
-  }
-
-  -- shapeshift buff icons (legacy/custom fallback)
-  dismount.shapeshifts = {
-    "ability_racial_bearform", "ability_druid_catform", "ability_druid_travelform",
-    "spell_nature_forceofnature", "ability_druid_aquaticform", "spell_nature_spiritwolf"
-  }
-
-  -- ClassicAPI SpellShapeshiftForm.dbc IDs matching the forms the original
-  -- module intentionally cancelled. Do not include Moonkin/Shadowform/Stealth.
-  local removableForms = {
-    [1] = true,  -- Cat
-    [2] = true,  -- Tree (vanilla DBC)
-    [3] = true,  -- Travel
-    [4] = true,  -- Aquatic
-    [5] = true,  -- Bear
-    [8] = true,  -- Dire Bear
-    [9] = true,  -- Tree of Life (Turtle WoW)
-    [11] = true, -- Swift Travel (Turtle WoW)
-    [16] = true, -- Ghost Wolf
-  }
-
-  -- errors that indicate mount/shapeshift
-  dismount.errors = { SPELL_FAILED_NOT_MOUNTED, ERR_ATTACK_MOUNTED, ERR_TAXIPLAYERALREADYMOUNTED,
-    SPELL_FAILED_NOT_SHAPESHIFT, SPELL_FAILED_NO_ITEMS_WHILE_SHAPESHIFTED, SPELL_NOT_SHAPESHIFTED,
-    SPELL_NOT_SHAPESHIFTED_NOSPACE, ERR_CANT_INTERACT_SHAPESHIFTED, ERR_NOT_WHILE_SHAPESHIFTED,
-    ERR_NO_ITEMS_WHILE_SHAPESHIFTED, ERR_TAXIPLAYERSHAPESHIFTED,ERR_MOUNT_SHAPESHIFTED }
-
-  dismount.scanner = ShaguTweaks.libtipscan:GetScanner("dismount")
-
-  local function LegacyCancel()
-    for i=0, 31 do
-      -- detect mounts based on tooltip text
-      dismount.scanner:SetPlayerBuff(i)
-      for _, str in pairs(dismount.strings) do
-        if dismount.scanner:Find(str) then
-          CancelPlayerBuff(i)
-          return true
-        end
-      end
-
-      -- detect shapeshift based on texture
-      local buff = GetPlayerBuffTexture(i)
-      if buff then
-        for _, bufftype in pairs(dismount.shapeshifts) do
-          if string.find(string.lower(buff), bufftype) then
-            CancelPlayerBuff(i)
-            return true
-          end
-        end
-      end
-    end
-  end
-
-  dismount:RegisterEvent("UI_ERROR_MESSAGE")
-  dismount:SetScript("OnEvent", function()
-    -- stand up
-    if arg1 == SPELL_FAILED_NOT_STANDING then
-      SitOrStand()
-      return
-    end
-
-    for _, errorstring in pairs(dismount.errors) do
-      if arg1 == errorstring then
-        -- ClassicAPI reads the real mounted/form state directly, avoiding a
-        -- 32-buff tooltip scan in the normal case.
-        if API.IsMounted() then
-          API.Dismount()
-          return
-        end
-
-        local formID = API.GetShapeshiftFormID()
-        if removableForms[formID] then
-          API.CancelShapeshiftForm()
-          return
-        end
-
-        -- Preserve compatibility with custom private-server auras/forms.
-        LegacyCancel()
-        return
-      end
-    end
-  end)
-end
diff --git a/mods/turtle-wow.lua b/mods/turtle-wow.lua
index 71bc23f..d247f72 100644
--- a/mods/turtle-wow.lua
+++ b/mods/turtle-wow.lua
@@ -80,56 +80,8 @@ module.enable = function(self)
   -- Vendor Values exposes a lazy ClassicAPI-backed SellValueDB compatibility
   -- table, so do not allocate a second Turtle-specific static price database.
 
-  -- add druids tree of life and fast travel form to autoshift
-  if ShaguTweaks.dismount then
-    table.insert(ShaguTweaks.dismount.shapeshifts, "ability_druid_treeoflife")
-    table.insert(ShaguTweaks.dismount.shapeshifts, "ability_druid_stagform")
-  end
-
   -- update debuff durations
   L["debuffs"]["Hand of Reckoning"] = {[0]=3.0}
   L["debuffs"]['Insect Swarm'] = {[0]=18.0}
   L["debuffs"]['Moonfire'] = {[1]=9.0,[2]=18.0,[3]=18.0,[4]=18.0,[5]=18.0,[6]=18.0,[7]=18.0,[8]=18.0,[9]=18.0,[10]=18.0,[0]=18.0}
 end
-
--- Turtle WoW specific libdebuff patches. Only Paladins and Warlocks
--- can trigger these cases, so other classes should not parse every spell-damage
--- chat line for strings they can never produce.
-local libdebuff = ShaguTweaks.libdebuff
-local _, playerClass = UnitClass("player")
-if playerClass == "PALADIN" or playerClass == "WARLOCK" then
-  local libdebuff_twow = CreateFrame("Frame")
-  libdebuff_twow:RegisterEvent("CHAT_MSG_SPELL_SELF_DAMAGE")
-  libdebuff_twow:SetScript("OnEvent", function()
-    -- Break early on invalid data
-    if not arg1 or not arg2 then return end
-
-    -- Holy Strike is a spell, but can refresh paladin judgements
-    -- Credits to @geojak
-    if playerClass == "PALADIN" and string.find(arg1, "Holy Strike") then
-      for seal in ShaguTweaks.L["judgements"] do
-        local name = UnitName("target")
-        local level = UnitLevel("target")
-        if name and libdebuff.objects[name] then
-          if level and libdebuff.objects[name][level] and libdebuff.objects[name][level][seal] then
-            libdebuff:AddEffect(name, level, seal)
-          elseif libdebuff.objects[name][0] and libdebuff.objects[name][0][seal] then
-            libdebuff:AddEffect(name, 0, seal)
-          end
-        end
-      end
-    end
-
-    -- refresh Immolate duration after cast Conflagrate
-    if playerClass == "WARLOCK" and string.find(arg1, "Conflagrate") then
-      local name = UnitName("target")
-      local level = UnitLevel("target")
-      if name and level and libdebuff.objects[name] and libdebuff.objects[name][level]
-        and libdebuff.objects[name][level]["Immolate"]
-      then
-        local duration = libdebuff.objects[name][level]["Immolate"].duration
-        libdebuff:UpdateDuration(name, level, "Immolate", duration - 3)
-      end
-    end
-  end)
-end
diff --git a/mods/unitframes-bighealth.lua b/mods/unitframes-bighealth.lua
index 03ea6cb..fef8e77 100644
--- a/mods/unitframes-bighealth.lua
+++ b/mods/unitframes-bighealth.lua
@@ -143,14 +143,16 @@ local function Enable(player, target)
 
     local function ApplyPlayerHealthColor()
       if not PlayerFrameNameBackground or not playerSetStatusBarColor then return end
-      local r, g, b, a = PlayerFrameNameBackground:GetVertexColor()
-      playerSetStatusBarColor(PlayerFrameHealthBar, r, g, b, a)
+      local r, g, b = PlayerFrameNameBackground:GetVertexColor()
+      -- Standalone hides this color-source texture with alpha zero. Its
+      -- visibility must not propagate to the actual health fill on updates.
+      playerSetStatusBarColor(PlayerFrameHealthBar, r, g, b, 1)
     end
 
     local function ApplyTargetHealthColor()
       if not TargetFrameNameBackground or not targetSetStatusBarColor then return end
-      local r, g, b, a = TargetFrameNameBackground:GetVertexColor()
-      targetSetStatusBarColor(TargetFrameHealthBar, r, g, b, a)
+      local r, g, b = TargetFrameNameBackground:GetVertexColor()
+      targetSetStatusBarColor(TargetFrameHealthBar, r, g, b, 1)
     end
 
     -- Keep the Big Health colors without replacing SetStatusBarColor with a
diff --git a/tests/README.md b/tests/README.md
index edf9887..afa7a61 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -16,6 +16,8 @@ lua5.0 tests/test_castbar_mover.lua .
 lua5.0 tests/test_bighealth_split.lua .
 lua5.0 tests/test_loss_of_control_style.lua .
 lua5.0 tests/test_health_text_alignment.lua .
+lua5.0 tests/test_classicapi_runtime.lua .
+lua5.0 tests/test_actionbar_grid.lua .
 ```
 
 These checks execute private helpers extracted from the production source with
diff --git a/tests/test_actionbar_grid.lua b/tests/test_actionbar_grid.lua
new file mode 100644
index 0000000..8a3a1c3
--- /dev/null
+++ b/tests/test_actionbar_grid.lua
@@ -0,0 +1,16 @@
+local root=(arg[1] or '.')..'/'
+local update,events
+ShaguTweaks={GetGlobalEnv=function() return getfenv(0) end,API={IsSupportedRuntime=function() return true end},hooksecurefunc=function(_,fn) update=fn end}
+CreateFrame=function() events={RegisterEvent=function() end,SetScript=function(self,_,fn) self.fire=fn end};return events end
+ActionButton_ShowGrid=function(b) b.showgrid=b.showgrid+1;b.shown=true end
+ActionButton_HideGrid=function(b) b.showgrid=b.showgrid-1;if b.showgrid==0 and not b.action then b.shown=false end end
+ActionButton1={showgrid=0,shown=false};ActionButton2={showgrid=0,shown=true,action=true}
+BonusActionButton1={showgrid=0,shown=false}
+dofile(root..'mods/actionbar-grid.lua')
+ALWAYS_SHOW_MULTIBARS="1";events.fire();update();assert(ActionButton1.showgrid==1 and ActionButton1.shown and BonusActionButton1.shown)
+ActionButton_ShowGrid(ActionButton1) -- dragging adds its own grid reference
+ALWAYS_SHOW_MULTIBARS=0;update();assert(ActionButton1.showgrid==1 and ActionButton1.shown)
+ActionButton_HideGrid(ActionButton1);assert(not ActionButton1.shown and ActionButton2.shown and not BonusActionButton1.shown)
+update();assert(ActionButton1.showgrid==0)
+ALWAYS_SHOW_MULTIBARS=1;update();assert(ActionButton1.shown and ActionButton1.showgrid==1)
+print('Main/bonus action grids: native preference, idempotence, toggle off/on, drag references and filled buttons passed')
diff --git a/tests/test_bighealth_split.lua b/tests/test_bighealth_split.lua
index 20b80ea..e5c64ec 100644
--- a/tests/test_bighealth_split.lua
+++ b/tests/test_bighealth_split.lua
@@ -7,7 +7,7 @@ local function Check(player,target)
  function methods:SetHeight(v) self.height=v end
  function methods:SetPoint() end
  function methods:SetVertexColor() end
- function methods:GetVertexColor() return .2,.5,.8,1 end
+ function methods:GetVertexColor() return .2,.5,.8,0 end -- suppressed standalone name background
  function methods:GetTexCoord() return 0,0,0,1,1,0,1,1 end
  function methods:GetWidth() return 256 end
  function methods:SetWidth() end
@@ -16,11 +16,14 @@ local function Check(player,target)
  function methods:SetScript(k,v) self[k]=v end
  function methods:RegisterEvent() end
  function methods:UnregisterAllEvents() end
- function methods:SetStatusBarColor() end
+ function methods:SetStatusBarColor(r,g,b,a) self.color={r,g,b,a} end
  for _,name in ipairs({'PlayerFrameTexture','PlayerStatusTexture','PlayerFrameHealthBar','PlayerFrameNameBackground','TargetFrameTexture','TargetFrameHealthBar','TargetFrameNameBackground'}) do _G[name]=obj() end
  ShaguTweaks={T=setmetatable({},{__index=function(t,k) return k end}),UITint={r=.5,g=.5,b=.5,a=1}}
  function ShaguTweaks:register(m) mods[m.title]=m;return m end
- hooksecurefunc=function(object,key,fn) if type(object)=='string' then hooks[object]=key end end
+ hooksecurefunc=function(object,key,fn)
+  if type(object)=='string' then hooks[object]=key
+  else local original=object[key];object[key]=function(self,...) original(self,unpack(arg));fn(self,unpack(arg)) end end
+ end
  GetAddOnInfo=function() return nil end
  IsResting=function() return false end
  UnitClassification=function() return 'elite' end
@@ -37,6 +40,11 @@ local function Check(player,target)
  assert((TargetFrameNameBackground.hidden or false)==target)
  assert((hooks.PlayerFrame_UpdateStatus~=nil)==player)
  assert((hooks.TargetFrame_CheckClassification~=nil)==target)
+ if player then
+  PlayerFrameHealthBar:SetStatusBarColor(1,0,0,1) -- health loss triggers native recoloring
+  assert(PlayerFrameHealthBar.color[1]==.2 and PlayerFrameHealthBar.color[4]==1)
+ end
+ if target then assert(TargetFrameHealthBar.color[4]==1) end
 end
 Check(false,false);Check(true,false);Check(false,true);Check(true,true)
 local f=assert(io.open(root..'main.lua'));local s=f:read('*a');f:close();assert(loadstring(s))
diff --git a/tests/test_classicapi_runtime.lua b/tests/test_classicapi_runtime.lua
new file mode 100644
index 0000000..cf3ba8a
--- /dev/null
+++ b/tests/test_classicapi_runtime.lua
@@ -0,0 +1,42 @@
+local root=(arg[1] or '.')..'/'
+local f=assert(io.open(root..'api.lua'));local source=f:read('*a');f:close();assert(loadstring(source))
+local a=assert(string.find(source,'API.minimum_version =',1,true))
+local b=assert(string.find(source,'API.classicapi =',a,true))
+local API={}
+API=assert(loadstring('local _G=getfenv(0);local API={};'..string.sub(source,a,b-1)..'return API'))()
+CLASSIC_API_VERSION=11810
+C_Timer={After=function() end};C_EventUtils={IsEventValid=function() return true end}
+C_NamePlate={GetNamePlateForUnit=function() end}
+assert(API.IsSupportedRuntime())
+CLASSIC_API_VERSION=11809;assert(not API.IsSupportedRuntime())
+CLASSIC_API_VERSION=nil;assert(not API.IsSupportedRuntime())
+CLASSIC_API_VERSION=11900;assert(API.IsSupportedRuntime())
+C_NamePlate=nil;assert(not API.IsSupportedRuntime())
+C_NamePlate={GetNamePlateForUnit=function() end}
+local frames,scans={},0
+CreateFrame=function()
+ local f={scripts={},events={}}
+ function f:SetScript(k,v) self.scripts[k]=v end
+ function f:GetScript(k) return self.scripts[k] end
+ function f:RegisterEvent(k) self.events[k]=true end
+ table.insert(frames,f);return f
+end
+WorldFrame={GetNumChildren=function() scans=scans+1;return 0 end,GetChildren=function() end}
+ShaguTweaks={API=API,GetGlobalEnv=function() return getfenv(0) end,GetExpansion=function() return 'vanilla' end}
+API.nameplateevents=true
+dofile(root..'libs/libnameplate.lua')
+local lib=ShaguTweaks.libnameplate
+lib:EnableIfNeeded();assert(not lib.enabled and scans==0)
+table.insert(lib.OnInit,function() end)
+CLASSIC_API_VERSION=0;lib:EnableIfNeeded();assert(not lib.enabled)
+CLASSIC_API_VERSION=11810;lib:EnableIfNeeded();assert(lib.enabled and not lib.scripts.OnUpdate and scans==0)
+local driver,retry
+for _,frame in ipairs(frames) do
+ if frame.events.NAME_PLATE_UNIT_ADDED then driver=frame end
+ if frame.scripts.OnUpdate then retry=frame end
+end
+assert(driver and retry)
+this=retry;retry.scripts.OnUpdate();assert(scans==1 and not retry.scripts.OnUpdate)
+driver.scripts.OnEvent();driver.scripts.OnEvent();assert(scans==1)
+this=retry;retry.scripts.OnUpdate();assert(scans==2 and not retry.scripts.OnUpdate)
+print('ClassicAPI runtime: minimum/missing APIs, dormant nameplate discovery and deferred event coalescing passed')