Port to WoW client 12.0.7 (build 68453)

Adapt CypherCore from 11.2.5.63796 to 12.0.7.68453 using TrinityCore as
byte-exact reference.

- Fase 1: build gate 68453 (build_info + build_auth_key SQL, keys from TC)
- Fase 2: Opcodes.cs remapped by name to 12.0.7 values
- Fase 3: 32 DB2 structs + HotfixDatabase.cs SELECTs realigned; fixed
  ReputationManager/SpellInfo refs
- Fase 4: UpdateFields ported (GameObject/Conversation/AreaTrigger/Player/
  Unit/ActivePlayer + nested VisibleItem/QuestLog/BitVectors/CraftingOrderItem/
  SkillInfo)
- Critical protocol fixes: CreateObject header +3 bits (Room/Decor/MeshObject);
  EntityFragment enum renumbered to 12.0.7 (was 11.2.5 values, breaking every
  object packet)
- New-entity foundation: TypeId/TypeMask/HighGuid.MeshObject, fragment tags
- MeshObject entity scaffold (Midnight features are wire-format only)

Builds clean (dotnet build -c Release, 0 errors).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Source/Framework/Constants/ObjectConst.cs

@@ -19,7 +19,8 @@ namespace Framework.Constants
         AreaTrigger = 11,
         SceneObject = 12,
         Conversation = 13,
-        Max = 14
+        MeshObject = 14,                                                 // 12.0.7
+        Max = 15
     }
 
     public enum TypeMask
@@ -38,9 +39,10 @@ namespace Framework.Constants
         AreaTrigger = 0x800,
         SceneObject = 0x1000,
         Conversation = 0x2000,
+        MeshObject = 0x4000,                                             // 12.0.7
 
         Seer = Unit | Player | DynamicObject,
-        WorldObject = Unit | GameObject | DynamicObject | Corpse | AreaTrigger | SceneObject | Conversation
+        WorldObject = Unit | GameObject | DynamicObject | Corpse | AreaTrigger | SceneObject | Conversation | MeshObject
     }
 
     public enum HighGuid
@@ -100,6 +102,9 @@ namespace Framework.Constants
         ArenaTeam = 52,
         LMMParty = 53,
         LMMLobby = 54,
+        Housing = 55,                                                    // 12.0.7
+        MeshObject = 56,                                                 // 12.0.7
+        Entity = 57,                                                    // 12.0.7
 
         Count
     }