Add Growl pet auto-teach feature and smooth zButton expand animation

- New Pet Auto-Teach: on tame, offer to teach Growl at the best rank via the
  Beast Training window (Craft API DoCraft), with a General options checkbox
  and /mth growl on|off|status toggle (on by default).
- De-stagger zButton flyout bars and zBar so buttons fade in together.
- Update CHANGELOG.

modules/zhunter/ZSpellButtonTemplate.lua

@@ -418,11 +418,9 @@ function ZSpellButton_SetChildrenExpanded(parent, expanded)
 			end
 		end
 		ZSpellButton_StartFadeTimer(parent)
-		-- Animate only on a genuine collapsed->expanded toggle, and never on the
-		-- very first apply at login (guarded by _zbAnimReady, set in ApplyChildrenExpanded).
-		if wasCollapsed and parent._zbAnimReady then
-			ZSpellButton_AnimateExpand(parent)
-		end
+		-- Flyout reveal is instant: no stagger/cascade animation. The staggered
+		-- "stacking one after the other" fly-out was slow and unwanted, so the
+		-- children just appear immediately when expanded.
 	else
 		saved["children"]["expanded"] = 0
 		if parent.children then

modules/zhunter/zBar.lua

@@ -284,11 +284,9 @@ function MTH_ZBar_Release()
 	end
 end
 
--- Animations: gentle staggered fade-in of the bar's buttons when it activates.
--- NOTE: keep this a plain alpha fade only. A SlideIn (position tween) here caused
--- client micro-freezes on reload because it re-anchors every chained button each
--- frame, forcing repeated layout recalcs. Use position/scale tweens on the zBar
--- with extreme caution.
+-- Animations: a single, quick, simultaneous fade-in of the bar's buttons when
+-- it activates. NO stagger (no per-button delay) — every button fades in at the
+-- same time so it reads as one clean fade instead of a slow "stacking" cascade.
 function MTH_ZBar_AnimateActivate()
 	if not ZBar_Sauce then return end
 	if type(MTH_FX_IsEnabled) ~= "function" or not MTH_FX_IsEnabled("ui.zbar") then
@@ -302,7 +300,7 @@ function MTH_ZBar_AnimateActivate()
 			local btn = getglobal(buttonName)
 			if btn and btn:IsShown() then
 				btn:SetAlpha(0)
-				ZBar_Sauce:FadeTo(btn, 1, 0.30, "outQuad", { delay = (i - 1) * 0.05 })
+				ZBar_Sauce:FadeTo(btn, 1, 0.20, "outQuad")
 			end
 		end
 	end
@@ -356,5 +354,8 @@ function MTH_ZBar_Init()
 	if s.enabled then
 		MTH_ZBar_EnsureAnchor()
 		MTH_ZBar_ApplyLayout()
+		-- Play the gentle fade on login/reload too, not just on checkbox toggle.
+		-- Safe here because AnimateActivate is a plain alpha fade (no re-anchoring).
+		MTH_ZBar_AnimateActivate()
 	end
 end