Wire SMSG_PLAY_SOUND to AudioEngine via SoundEntries.dbc lookup

Add PlaySoundCallback to GameHandler (same pattern as PlayMusicCallback).
When SMSG_PLAY_SOUND arrives, resolve the soundId through SoundEntries.dbc
(fields 3-12 = files, field 23 = DirectoryBase) and play the first found
file as a 2-D sound effect via AudioEngine::playSound2D(). Previously the
opcode was parsed and dropped.

src/core/application.cpp

@@ -2121,6 +2121,27 @@ void Application::setupUICallbacks() {
         }
     });
 
+    // SMSG_PLAY_SOUND: look up SoundEntries.dbc and play 2-D sound effect
+    gameHandler->setPlaySoundCallback([this](uint32_t soundId) {
+        if (!assetManager) return;
+
+        auto dbc = assetManager->loadDBC("SoundEntries.dbc");
+        if (!dbc || !dbc->isLoaded()) return;
+
+        int32_t idx = dbc->findRecordById(soundId);
+        if (idx < 0) return;
+
+        const uint32_t row = static_cast<uint32_t>(idx);
+        std::string dir = dbc->getString(row, 23);
+        for (uint32_t f = 3; f <= 12; ++f) {
+            std::string name = dbc->getString(row, f);
+            if (name.empty()) continue;
+            std::string path = dir.empty() ? name : dir + "\\" + name;
+            audio::AudioEngine::instance().playSound2D(path);
+            return;
+        }
+    });
+
     // Other player level-up callback — trigger 3D effect + chat notification
     gameHandler->setOtherPlayerLevelUpCallback([this](uint64_t guid, uint32_t newLevel) {
         if (!gameHandler || !renderer) return;

src/game/game_handler.cpp

@@ -3041,6 +3041,7 @@ void GameHandler::handlePacket(network::Packet& packet) {
             if (packet.getSize() - packet.getReadPos() >= 4) {
                 uint32_t soundId = packet.readUInt32();
                 LOG_DEBUG("SMSG_PLAY_SOUND id=", soundId);
+                if (playSoundCallback_) playSoundCallback_(soundId);
             }
             break;