Add attribution and source citations for open source release

- Create ATTRIBUTION.md crediting WoWDev Wiki, TrinityCore, MaNGOS,
  and third-party libraries used
- Add WoWDev Wiki format specification links to file format parsers
  (ADT, BLP, DBC loaders)
- Add protocol documentation reference to opcodes.hpp

ATTRIBUTION.md

@@ -0,0 +1,56 @@
+# Attribution
+
+This project was made possible by the work of the WoW modding and reverse-engineering community. We gratefully acknowledge the following resources and projects:
+
+## Documentation
+
+### WoWDev Wiki
+https://wowdev.wiki/
+
+The WoWDev Wiki is a community-maintained resource documenting World of Warcraft file formats and protocols. This project's file format parsers were implemented based on specifications from the wiki:
+
+- [ADT (terrain)](https://wowdev.wiki/ADT) - Terrain tile format
+- [M2 (models)](https://wowdev.wiki/M2) - Character and creature model format
+- [WMO (buildings)](https://wowdev.wiki/WMO) - World model object format
+- [BLP (textures)](https://wowdev.wiki/BLP) - Blizzard picture format
+- [DBC (database)](https://wowdev.wiki/DBC) - Database client file format
+- [World Packet](https://wowdev.wiki/World_Packet) - Network protocol opcodes
+
+## Reference Implementations
+
+### TrinityCore
+https://github.com/TrinityCore/TrinityCore
+
+Open-source WoW server emulator. Referenced for understanding server-side protocol behavior and packet structures.
+
+### MaNGOS / CMaNGOS
+https://github.com/cmangos/mangos-wotlk
+
+Open-source WoW server emulator. Referenced for protocol documentation and authentication flow.
+
+## Libraries
+
+This project uses the following open-source libraries:
+
+| Library | License | Purpose |
+|---------|---------|---------|
+| [SDL2](https://libsdl.org/) | zlib | Window management, input handling |
+| [GLEW](http://glew.sourceforge.net/) | BSD/MIT | OpenGL extension loading |
+| [GLM](https://github.com/g-truc/glm) | MIT | Mathematics library |
+| [OpenSSL](https://www.openssl.org/) | Apache 2.0 | Cryptographic functions (SRP6) |
+| [StormLib](https://github.com/ladislav-zezula/StormLib) | MIT | MPQ archive extraction |
+| [Dear ImGui](https://github.com/ocornut/imgui) | MIT | Immediate mode GUI |
+
+## Cryptographic Standards
+
+The SRP6 authentication implementation follows:
+- [RFC 2945](https://tools.ietf.org/html/rfc2945) - The SRP Authentication and Key Exchange System
+- [RFC 5054](https://tools.ietf.org/html/rfc5054) - Using SRP for TLS Authentication
+
+## Legal Notice
+
+World of Warcraft is a trademark of Blizzard Entertainment, Inc. This project is not affiliated with or endorsed by Blizzard Entertainment.
+
+This project does not include any Blizzard Entertainment proprietary data, assets, or code. All file format parsers were implemented independently based on publicly available community documentation.
+
+Users must supply their own legally obtained WoW 3.3.5a game data files to use this software.

include/game/opcodes.hpp

@@ -6,6 +6,8 @@ namespace wowee {
 namespace game {
 
 // World of Warcraft 3.3.5a opcodes
+// Values derived from community reverse-engineering efforts
+// Reference: https://wowdev.wiki/World_Packet
 enum class Opcode : uint16_t {
     // Client to Server
     CMSG_PING = 0x1DC,

include/pipeline/adt_loader.hpp

@@ -147,6 +147,7 @@ struct ADTTerrain {
  * ADT terrain loader
  *
  * Loads WoW 3.3.5a ADT (Azeroth Data Tile) terrain files
+ * Format specification: https://wowdev.wiki/ADT
  */
 class ADTLoader {
 public:

include/pipeline/blp_loader.hpp

@@ -50,6 +50,7 @@ struct BLPImage {
  *
  * Supports BLP0, BLP1, BLP2 formats
  * Handles DXT1/3/5 compression and palette formats
+ * Format specification: https://wowdev.wiki/BLP
  */
 class BLPLoader {
 public:

include/pipeline/dbc_loader.hpp

@@ -14,6 +14,7 @@ namespace pipeline {
  *
  * DBC files store game database tables (spells, items, maps, creatures, etc.)
  * Format: Fixed header + fixed-size records + string block
+ * Format specification: https://wowdev.wiki/DBC
  */
 class DBCFile {
 public: