Release v1.0.8.8: Gearset drag-drop and index 0 fix

- Only call LoadIconId() for GearSet slots so drop still sticks
- Allow gearset id 0 (first in list) in drop validation and GetIconIdForPayload
- Bump version, changelog, pluginmaster

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

Helpers/ActionBarsManager.cs

@@ -122,10 +122,11 @@ namespace HSUI.Helpers
                     continue;
                 }
 
-                // Populate IconId from ApparentSlotType/ApparentActionId. Required for GearSet and other
-                // dynamic types: the game derives the job icon from the gearset (e.g. first equipment slot).
-                // Without this, when the first gear slot changes the cached IconId can be 0 and the bar shows a blank.
-                slot->LoadIconId();
+                // For GearSet slots, refresh IconId from the gearset (e.g. job icon from first equipment slot).
+                // Only call for already-synced GearSet slots: calling LoadIconId() on other types or before the
+                // game has synced a just-dropped slot can prevent the drop from sticking.
+                if (slot->ApparentSlotType == RaptureHotbarModule.HotbarSlotType.GearSet)
+                    slot->LoadIconId();
 
                 bool usable = slot->IsSlotUsable(slot->ApparentSlotType, slot->ApparentActionId);
                 uint iconId = slot->IconId;