Vanilla/Turtle WoW support: M2 loading, bone parsing, textures, auth

- Vanilla M2 bone struct (108 bytes) with 28-byte animation tracks
- Version-aware bone parsing (vanilla vs WotLK format detection)
- Fix CharSections.dbc field layout for vanilla (variation/color at 4-5)
- Remove broken CharSections.csv files (all fields marked as strings)
- Expansion data reload on profile switch (DBC cache clear, layout reload)
- Vanilla packet encryption (VanillaCrypt XOR-based header crypt)
- Extended character preview geoset range (0-99) for vanilla models
- DBC cache clear support in AssetManager

include/game/game_handler.hpp

@@ -1214,6 +1214,19 @@ private:
     std::unique_ptr<WardenCrypto> wardenCrypto_;
     std::unique_ptr<WardenModuleManager> wardenModuleManager_;
 
+    // Warden module download state
+    enum class WardenState {
+        WAIT_MODULE_USE,     // Waiting for first SMSG (MODULE_USE)
+        WAIT_MODULE_CACHE,   // Sent MODULE_MISSING, receiving module chunks
+        WAIT_HASH_REQUEST,   // Module received, waiting for HASH_REQUEST
+        WAIT_CHECKS,         // Hash sent, waiting for check requests
+    };
+    WardenState wardenState_ = WardenState::WAIT_MODULE_USE;
+    std::vector<uint8_t> wardenModuleHash_;    // 16 bytes MD5
+    std::vector<uint8_t> wardenModuleKey_;     // 16 bytes RC4
+    uint32_t wardenModuleSize_ = 0;
+    std::vector<uint8_t> wardenModuleData_;    // Downloaded module chunks
+
     // ---- XP tracking ----
     uint32_t playerXp_ = 0;
     uint32_t playerNextLevelXp_ = 0;