Refuse duplicate creation runes by id and talents sharing a client sub type

Character creation now checks duplicates by rune id instead of relying on
RuneBase object identity, and groups talents by rune_sub_type
(RuneBase.getSubTypeToken) instead of the DB SubType byte. Creation talents
are rank 0, so two in the same group block each other, as in
ArcCharacter_AddRune (0x4695D0).

New groups over the DB (scripts/p26b.py):
- weapon proficiencies 250080-250087: only one at creation
- Blood Gift: Blood of the Dragon, Giant's Blood, Taint of Madness, Taint of Chaos
- Juggernaut + Tough Hide; Tireless + Tough as Nails
- Childhood gains Witch Sight 250112; Dark Whispers and Divine Touch join
  the Background group

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/objects/PlayerCharacter.java

@@ -866,7 +866,8 @@ public class PlayerCharacter extends AbstractCharacter {
 
         int[] characterRunes = msg.getRunes();
 
-        HashSet<Byte> usedRunesSubType = new HashSet<>();
+        HashSet<Integer> usedRuneIDs = new HashSet<>();
+        HashSet<Integer> usedSubTypeTokens = new HashSet<>();
         HashSet<RuneBase> usedRunes = new HashSet<>();
 
         // So that all the penalties can be added at the end.
@@ -922,24 +923,19 @@ public class PlayerCharacter extends AbstractCharacter {
                 return null;
             }
 
-            int previous_size = usedRunes.size();
-            int previous_subtype = usedRunesSubType.size();
-
-            usedRunes.add(runeBase);
-            usedRunesSubType.add(runeBase.getSubtype());
-
-            // Duplicate Rune check
-            if (usedRunes.size() <= previous_size) {
+            if (!usedRuneIDs.add(runeBase.getObjectUUID())) {
                 Logger.info("Duplicate RuneBase");
                 return null;
             }
 
-            // Duplicate Subtype check
-            if (runeBase.getSubtype() != 0 && usedRunesSubType.size() <= previous_subtype) {
+            // Creation talents are rank 0, so two of the same sub type block each other (client 0x4695D0)
+            if (runeBase.getSubTypeToken() != 0 && !usedSubTypeTokens.add(runeBase.getSubTypeToken())) {
                 Logger.info("Duplicate RuneBase Subtype");
                 return null;
             }
 
+            usedRunes.add(runeBase);
+
             int maxValue = 0;
 
             // Every attempt is made to load MIN_NEEDED_ATTRIBUTES first.