fix: implement topBitSetTerminatedArray, fix nbt TAG_End, fix entity_equipment

- Implement topBitSetTerminatedArray decoder/encoder with MSB continuation
- Fix nbt.Tag.Decode to handle TAG_End at root level (fixes 1.8 slot NBT)
- Remove 228 now-passing decode failure tests, keep 10 still failing
- EntityEquipment now works correctly across all versions

mc/proto_generated/v1_21_8/proto.go

@@ -1,6 +1,6 @@
 // Code generated by strom. DO NOT EDIT.
 // source: minecraft-data/pc/1.21.8/protocol.json (sha256:930fbb4c69fd2ecadddcee3c38d3f02908adc23b54b707cb21112e7ab1e9dba1)
-// version: v0.6.6-0.20260805154326-fa70ea36c6f5+dirty (go1.26.2)
+// version: v0.6.6-0.20260805170503-1d8f70c7fdae+dirty (go1.26.2)
 package v1_21_8
 
 import (
@@ -15030,15 +15030,79 @@ func (ret *PlayToClientPacketEntityEffect) Encode(w io.Writer) (err error) {
 }
 
 type PlayToClientPacketEntityEquipment struct {
-	Val proto_base.ToDo
+	EntityId   int32
+	Equipments []struct {
+		Slot int8
+		Item Slot
+	}
 }
 
 func (ret *PlayToClientPacketEntityEquipment) Decode(r io.ReadSeeker) (err error) {
-	err = proto_base.ToDoError
+	ret.EntityId, err = proto_base.DecodeVarInt(r)
+	if err != nil {
+		return
+	}
+	ret.Equipments = []struct {
+		Slot int8
+		Item Slot
+	}{}
+	for {
+		var PlayToClientPacketEntityEquipmentEquipmentsHeader uint8
+		err = binary.Read(r, binary.BigEndian, &PlayToClientPacketEntityEquipmentEquipmentsHeader)
+		if err == io.EOF {
+			err = nil
+			break
+		}
+		if err != nil {
+			return
+		}
+		_, err = r.Seek(-1, io.SeekCurrent)
+		if err != nil {
+			return
+		}
+		PlayToClientPacketEntityEquipmentEquipmentsHasMore := PlayToClientPacketEntityEquipmentEquipmentsHeader&128 != 0
+		var PlayToClientPacketEntityEquipmentEquipmentsElement struct {
+			Slot int8
+			Item Slot
+		}
+		err = binary.Read(r, binary.BigEndian, &PlayToClientPacketEntityEquipmentEquipmentsElement.Slot)
+		if err != nil {
+			return
+		}
+		err = PlayToClientPacketEntityEquipmentEquipmentsElement.Item.Decode(r)
+		if err != nil {
+			return
+		}
+		ret.Equipments = append(ret.Equipments, PlayToClientPacketEntityEquipmentEquipmentsElement)
+		if !PlayToClientPacketEntityEquipmentEquipmentsHasMore {
+			break
+		}
+	}
 	return
 }
 func (ret *PlayToClientPacketEntityEquipment) Encode(w io.Writer) (err error) {
-	err = proto_base.ToDoError
+	err = proto_base.EncodeVarInt(w, ret.EntityId)
+	if err != nil {
+		return
+	}
+	for iPlayToClientPacketEntityEquipmentEquipments, PlayToClientPacketEntityEquipmentEquipmentsElem := range ret.Equipments {
+		if iPlayToClientPacketEntityEquipmentEquipments != len(ret.Equipments)-1 {
+			err = binary.Write(w, binary.BigEndian, int8(uint8(PlayToClientPacketEntityEquipmentEquipmentsElem.Slot)|128))
+			if err != nil {
+				return
+			}
+		} else {
+			err = binary.Write(w, binary.BigEndian, PlayToClientPacketEntityEquipmentEquipmentsElem.Slot)
+			if err != nil {
+				return
+			}
+		}
+		PlayToClientPacketEntityEquipmentEquipmentsItemEncTmp := PlayToClientPacketEntityEquipmentEquipmentsElem.Item
+		err = PlayToClientPacketEntityEquipmentEquipmentsItemEncTmp.Encode(w)
+		if err != nil {
+			return
+		}
+	}
 	return
 }