Merge remote-tracking branch 'upstream/stable' into ed-27-05-2025-upstream-sync

# Conflicts:
#	.github/CODEOWNERS
#	Content.Client/Guidebook/Controls/GuideReagentReaction.xaml.cs
#	Content.IntegrationTests/Tests/Chemistry/TryAllReactionsTest.cs
#	Content.Server/Procedural/DungeonJob/DungeonJob.OreDunGen.cs
#	Resources/Prototypes/Entities/Effects/chemistry_effects.yml
#	Resources/Prototypes/Entities/Mobs/Customization/Markings/human_hair.yml
#	Resources/Prototypes/GameRules/meteorswarms.yml
#	Resources/Prototypes/Procedural/dungeon_configs.yml

Content.Shared/Storage/StorageComponent.cs

@@ -19,6 +19,14 @@ namespace Content.Shared.Storage
     {
         public static string ContainerId = "storagebase";
 
+        public const byte ChunkSize = 8;
+
+        // No datafield because we can just derive it from stored items.
+        /// <summary>
+        /// Bitmask of occupied tiles
+        /// </summary>
+        public Dictionary<Vector2i, ulong> OccupiedGrid = new();
+
         [ViewVariables]
         public Container Container = default!;