fix(player): restore missing additional save timer and reduce autosave interval

The m_additionalSaveTimer was never processed in the update loop, so quick
partial saves after important events (rare+ item pickups, quest completions)
never fired. This caused players to lose progress on disconnect/crash since
only the 15-minute full autosave protected them.

- Add m_additionalSaveTimer tick logic to Player::Update
- Reduce default PlayerSaveInterval from 900000 (15 min) to 300000 (5 min)

Co-authored-by: Cursor <cursoragent@cursor.com>

src/server/apps/worldserver/worldserver.conf.dist

@@ -1753,9 +1753,9 @@ InstantLogout = 1
 #
 #    PlayerSaveInterval
 #        Description: Time (in milliseconds) for player save interval.
-#        Default:     900000 - (15 min)
+#        Default:     300000 - (5 min)
 
-PlayerSaveInterval = 900000
+PlayerSaveInterval = 300000
 
 #
 #    PlayerSave.Stats.MinLevel

src/server/game/Entities/Player/PlayerUpdates.cpp

@@ -332,6 +332,28 @@ void Player::Update(uint32 p_time)
         }
     }
 
+    if (m_additionalSaveTimer)
+    {
+        if (p_time >= m_additionalSaveTimer)
+        {
+            m_additionalSaveTimer = 0;
+            CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();
+
+            if (m_additionalSaveMask & ADDITIONAL_SAVING_INVENTORY_AND_GOLD)
+                SaveInventoryAndGoldToDB(trans);
+
+            if (m_additionalSaveMask & ADDITIONAL_SAVING_QUEST_STATUS)
+                _SaveQuestStatus(trans);
+
+            CharacterDatabase.CommitTransaction(trans);
+            m_additionalSaveMask = 0;
+        }
+        else
+        {
+            m_additionalSaveTimer -= p_time;
+        }
+    }
+
     // Handle Water/drowning
     HandleDrowning(p_time);
 

src/server/game/World/WorldConfig.cpp

@@ -163,7 +163,7 @@ void WorldConfig::BuildConfigCache()
     SetConfigValue<bool>(CONFIG_ALLOW_PLAYER_COMMANDS, "AllowPlayerCommands", 1);
     SetConfigValue<bool>(CONFIG_PRESERVE_CUSTOM_CHANNELS, "PreserveCustomChannels", false);
     SetConfigValue<uint32>(CONFIG_PRESERVE_CUSTOM_CHANNEL_DURATION, "PreserveCustomChannelDuration", 14);
-    SetConfigValue<uint32>(CONFIG_INTERVAL_SAVE, "PlayerSaveInterval", 900000);
+    SetConfigValue<uint32>(CONFIG_INTERVAL_SAVE, "PlayerSaveInterval", 300000);
     SetConfigValue<uint32>(CONFIG_INTERVAL_DISCONNECT_TOLERANCE, "DisconnectToleranceInterval", 0);
     SetConfigValue<bool>(CONFIG_STATS_SAVE_ONLY_ON_LOGOUT, "PlayerSave.Stats.SaveOnlyOnLogout", true);
     SetConfigValue<bool>(CONFIG_VALIDATE_SKILL_LEARNED_BY_SPELLS, "ValidateSkillLearnedBySpells", true);