• Bump version to match CarryOn
• Allow nullable BlockEntityData in transfer interface

I'm assessing whether to merge CarryOnLib back into the main CarryOn mod.

CarryOnLib v1.0.0-pre.5

API Changes

• Transform/Attachment system refactored: ICarriedTransformGroupResolver → IRootTransformGroupResolver + IAttachmentTransformGroupResolver; CarriedGroupResolution → AttachmentResolveResult; removed RegisteredTransformGroupResolver
• ICarryManager updated: RegisterTransformGroupResolver → RegisterRootTransformGroupResolver + RegisterAttachmentTransformGroupResolver; HasPermissionToCarry → HasPermissionAt(Entity, BlockPos, bool showErrorMessage)
• CheckPermissionToCarryDelegate renamed to CheckPermissionAtDelegate; event renamed accordingly
• DropBlockAsItem → DropBlockAsEntityOrItem — clearer naming for dual entity/item drop behavior

Config Model Changes

• CarrySlotSpeedConfig / WalkSpeedOverridesConfig → SlotModifierConfig / ModifierOverridesConfig (shared between walk speed and hunger rate)
• WalkSpeedOverrides reorganized: moved from CarryOptions.WalkSpeedOverrides to CarryWalkSpeedConfig.ModifierOverrides; ByBlockCode/ByBlockClass changed from Dictionary<string, CarrySlotSpeedConfig> to List<SlotModifierConfig> with a Key property
• AllowSprintWhileCarrying + IgnoreCarrySpeedPenalty removed from CarryOptionsConfig → replaced by CarryWalkSpeedConfig.HandsEnabled, BackEnabled, HandsAllowSprint, BackAllowSprint
• BackpackSelectionMode changed from string-backed enum wrapper to direct BackpackSelectionMode enum with [JsonConverter(typeof(StringEnumConverter))]
• All config sections now have [DisplayName], [Description], [Category], [DefaultValue] annotations for AutoConfigLib UI
• New config version (v4) with UpgradeVersion() migration from v3

New Config Sections

• CarryWalkSpeedConfig - per-slot enable/disable, sprint control, per-block overrides
• CarryHungerRateConfig - per-slot enable, minimum saturation threshold, per-block overrides
• DropCarriedOnDamageConfig - per-slot enable, damage thresholds, drop range
• CarriedBlockEntityConfig - DropMode (Items/EntityOnFailedPlacement/EntityAlways), random drop rotation, particles, despawn timer (30 in-game days default), pickup access control (Anyone/OwnerOnly/OwnerFirst with grace period), visual scale

New Features

• DropMode enum - configures whether carried blocks drop as items or block entities
• PickupAccess enum - controls who can pick up dropped block entities with optional owner grace period
• ClientSidePermissionCheck config - enables optimistic client-side permission checks (may be inaccurate on claims mods)
• LegacyTrackDroppedBlocks config - restores legacy tracked-dropped-block pickup behavior (default: false)
• PickUpNoPermission carry failure code - distinct error when pickup is denied by permissions
• NotOwner failure code - distinct error when entity pickup is blocked by ownership
• InvalidateBackpackCache() method on CarryOnConfig
• IConfigProvider interface - exposes CarryOnConfig for DI
• CarriedBlockEntityConfig serialization keys added to CarryCode.AttributeKey

Utility Refactoring

• Extensions class removed; functionality split into:
  • BehaviorRegistrationExtensions (Register<T>, HasBehavior<T>, GetBehaviorOrDefault)
  • AttributeTreeExtensions (TryGet, Set, Remove, LookupValue, EvaluateDotNotationLogic)
  • InventoryConverter (ConvertBlockInventoryToBackpack, ConvertBackpackToBlockInventory)
  • JTokenExtensions (TryGetBool, TryGetFloat, TryGetStringArray)
• TransformGroupResolverHelper → AssetResolutionHelper; GetContainerSlots moved to BlockUtils
• JsonHelper.GetTransform + JsonHelper.HasAnyTransformValue → ModelTransformParser
• TreeSerializer updated to support Enum serialization (toString/parse)
• BlockUtils changed from class to static class

Required for CarryOn v2.0.0-pre.4

• API Refactor:
  • Overhauled ICarryManager with streamlined signatures, optional parameters, improved return types, and better XML docs.
• Added support for attached sign capture.

Required for CarryOn v2.0.0-pre.3

• Added walk speed modifier overrides — configure carry movement speed per block or block type for both hands and back slots.
• Major config serialization refactor for improved maintainability and reliability.
• Improved API null-safety and expanded error/failure codes for better feedback.
• Event system and stability improvements.

Required for CarryOn v2.0.0-pre.2

• Expanded transform-resolver API support in ICarryManager.cs.
• API change: RegisterTransformGroupResolver now requires a modId.
• API change: carried transform resolvers no longer expose Priority.
• Added cabinet carryable/config support.

Pre-release version for testing