Revamp options UI: dropdown-based class picker and per-character override tab

Replaces the 21-tab class sidebar with a single Classes tab driven by a
dropdown plus Hide All/Show All bulk actions. Reworks the old Profiles tab
into "Character Override": a single toggle that lets a character's frame
hide/show choices bypass its class settings, backed by a new
characterOverrides table alongside the existing profile data. Adds an
empty About tab, restyles sidebar tabs gold/white, and drops the unused
subtitle line.

HideCoA.lua

@@ -181,6 +181,75 @@ end
 
 HideCoA.DeleteProfile = DeleteProfile
 
+local function EnsureCharacterOverride(charKey)
+
+    if not HideCoADB.characterOverrides then
+        HideCoADB.characterOverrides = {}
+    end
+
+    local override = HideCoADB.characterOverrides[charKey]
+
+    if not override then
+        override = { enabled = false, frameSettings = {} }
+        HideCoADB.characterOverrides[charKey] = override
+    end
+
+    for _, frameName in ipairs(HideCoA.FRAMES) do
+        if override.frameSettings[frameName] == nil then
+            override.frameSettings[frameName] = true
+        end
+    end
+
+    return override
+
+end
+
+local function GetCharacterOverride()
+    return EnsureCharacterOverride(GetCharacterKey())
+end
+
+HideCoA.GetCharacterOverride = GetCharacterOverride
+
+local function SetCharacterOverrideEnabled(enabled)
+    GetCharacterOverride().enabled = enabled
+    HideCoA.ApplySetting()
+end
+
+HideCoA.SetCharacterOverrideEnabled = SetCharacterOverrideEnabled
+
+local function SetCharacterOverrideFrameHidden(frameName, hide)
+    GetCharacterOverride().frameSettings[frameName] = hide
+    HideCoA.ApplySetting()
+end
+
+HideCoA.SetCharacterOverrideFrameHidden = SetCharacterOverrideFrameHidden
+
+local function SetAllClassesHidden(hide)
+
+    local classSettings = GetActiveClassSettings()
+
+    for _, class in ipairs(HideCoA.CUSTOM_CLASSES) do
+        for _, frameName in ipairs(HideCoA.FRAMES) do
+            classSettings[class][frameName] = hide
+        end
+    end
+
+end
+
+local function HideAllFrames()
+    SetAllClassesHidden(true)
+    HideCoA.ApplySetting()
+end
+
+HideCoA.HideAllFrames = HideAllFrames
+
+local function ShowAllFrames()
+    SetAllClassesHidden(false)
+    HideCoA.ApplySetting()
+end
+
+HideCoA.ShowAllFrames = ShowAllFrames
+
 local function ShouldHideForClass(playerClass, frameName)
 
     local classSettings = GetActiveClassSettings()[playerClass]
@@ -193,13 +262,24 @@ local function ShouldHideForClass(playerClass, frameName)
 
 end
 
+local function ShouldHideFrame(frameName)
+
+    local override = GetCharacterOverride()
+
+    if override.enabled then
+        return override.frameSettings[frameName]
+    end
+
+    local _, playerClass = UnitClass("player")
+    return ShouldHideForClass(playerClass, frameName)
+
+end
+
 local hookedFrames = {}
 local seenNaturalShow = {}
 
 local function ApplySetting()
 
-    local _, playerClass = UnitClass("player")
-
     for _, frameName in ipairs(HideCoA.FRAMES) do
 
         local frame = _G[frameName]
@@ -210,8 +290,7 @@ local function ApplySetting()
 
                 frame:HookScript("OnShow", function(self)
                     seenNaturalShow[frameName] = true
-                    local _, currentClass = UnitClass("player")
-                    if ShouldHideForClass(currentClass, frameName) then
+                    if ShouldHideFrame(frameName) then
                         self:Hide()
                     end
                 end)
@@ -220,7 +299,7 @@ local function ApplySetting()
 
             end
 
-            local hide = ShouldHideForClass(playerClass, frameName)
+            local hide = ShouldHideFrame(frameName)
 
             if hide then
                 frame:Hide()
@@ -304,6 +383,8 @@ f:SetScript("OnEvent", function(self, event, arg1)
             HideCoADB.charProfile[charKey] = charKey
         end
 
+        EnsureCharacterOverride(charKey)
+
         HideCoADB.selectedProfile = nil
 
     elseif event == "PLAYER_LOGIN" then