Initial commit: ROW Client source code

Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Engine/Zalla3D Base Class/Boost/pool/detail/guard.hpp

@@ -0,0 +1,40 @@
+// Copyright (C) 2000 Stephen Cleary
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org for updates, documentation, and revision history.
+
+#ifndef BOOST_POOL_GUARD_HPP
+#define BOOST_POOL_GUARD_HPP
+
+// Extremely Light-Weight guard glass
+
+namespace boost {
+
+namespace details {
+namespace pool {
+
+template <typename Mutex>
+class guard
+{
+  private:
+    Mutex & mtx;
+
+    guard(const guard &);
+    void operator=(const guard &);
+
+  public:
+    explicit guard(Mutex & nmtx)
+    :mtx(nmtx) { mtx.lock(); }
+
+    ~guard() { mtx.unlock(); }
+};
+
+} // namespace pool
+} // namespace details
+
+} // namespace boost
+
+#endif