Fix realm-gate disable for book/options, pet-rank learning, unique beasts

- Hunter's Book and options window now show a full 'DISABLED.' overlay on realm-gated realms instead of rendering content
- Pet training: new rank of an already-known ability is now recognised, announced, and reflected in tooltips
- Restore curated 'unique appearance' beast allowlist (34 beasts) in data/init.lua
- CHANGELOG updated

api/core-scan-beasttraining.lua

@@ -335,6 +335,39 @@ local function MTH_PT_IsHunterTokenKnown(token)
 	return false
 end
 
+-- Rank-strict variant of MTH_PT_IsHunterTokenKnown: only the EXACT token counts, with
+-- no fall back to the base ability. Knowing Charge (Rank 1) must NOT make Charge (Rank 2)
+-- look already-learned, otherwise learning a new rank is never recorded or announced.
+local function MTH_PT_IsExactTokenKnown(token)
+	if token == nil or token == "" then
+		return false
+	end
+
+	local store = MTH_PT_GetStore()
+	if store.hunterKnownMap and store.hunterKnownMap[token] == true then
+		return true
+	end
+	if store.spellMap and store.spellMap[token] and store.spellMap[token].isKnown == true then
+		return true
+	end
+	return false
+end
+
+-- Authoritative, rank-strict check for whether the HUNTER has learned a pet ability at a
+-- given rank. Consults both hunterKnownMap and spellMap, so callers (e.g. the tooltip hint)
+-- stay correct even when a full Beast Training rescan has not yet rebuilt spellMap rows.
+function MTH_IsPetAbilityKnownByHunter(abilityName, rankNumber)
+	local ability = MTH_PT_NormalizeName(abilityName)
+	if ability == "" then
+		return false
+	end
+	local token = MTH_PT_MakeTokenFromAbilityRank(ability, rankNumber)
+	if token == "" then
+		return false
+	end
+	return MTH_PT_IsExactTokenKnown(token)
+end
+
 local function MTH_PT_ProcessLearnSystemMessage(rawMessage)
 	local message = tostring(rawMessage or "")
 	if message == "" then return false end
@@ -368,7 +401,7 @@ local function MTH_PT_ProcessLearnSystemMessage(rawMessage)
 	local token = MTH_PT_MakeTokenFromAbilityRank(abilityName, rankNumber)
 	if token == "" then return false end
 
-	local alreadyKnown = MTH_PT_IsHunterTokenKnown(token)
+	local alreadyKnown = MTH_PT_IsExactTokenKnown(token)
 	local changed = false
 	if not alreadyKnown then
 		changed = MTH_PT_MarkHunterKnownToken(token)