Add MCLQ water, TaxiPathNode transports, and vanilla M2 particles

- Parse MCLQ sub-chunks in vanilla ADTs for water rendering (WotLK uses MH2O)
- Load TaxiPathNode.dbc for MO_TRANSPORT world-coordinate paths (vanilla boats)
- Parse data[] from SMSG_GAMEOBJECT_QUERY_RESPONSE (taxiPathId for transports)
- Support vanilla M2 particle emitters (504-byte struct, different from WotLK 476)
- Add character preview texture diagnostic logging
- Fix disconnect handling on character screen (show error only when no chars)

src/game/world_packets.cpp

@@ -1962,7 +1962,7 @@ bool GameObjectQueryResponseParser::parse(network::Packet& packet, GameObjectQue
     }
 
     data.type = packet.readUInt32();       // GameObjectType
-    /*uint32_t displayId =*/ packet.readUInt32();
+    data.displayId = packet.readUInt32();
     // 4 name strings (only first is usually populated)
     data.name = packet.readString();
     // name2, name3, name4
@@ -1970,6 +1970,20 @@ bool GameObjectQueryResponseParser::parse(network::Packet& packet, GameObjectQue
     packet.readString();
     packet.readString();
 
+    // WotLK: 3 extra strings before data[] (iconName, castBarCaption, unk1)
+    packet.readString();  // iconName
+    packet.readString();  // castBarCaption
+    packet.readString();  // unk1
+
+    // Read 24 type-specific data fields
+    size_t remaining = packet.getSize() - packet.getReadPos();
+    if (remaining >= 24 * 4) {
+        for (int i = 0; i < 24; i++) {
+            data.data[i] = packet.readUInt32();
+        }
+        data.hasData = true;
+    }
+
     LOG_DEBUG("GameObject query response: ", data.name, " (type=", data.type, " entry=", data.entry, ")");
     return true;
 }