IBC Spec: Byte separators swapped in receiptPath and acknowledgementPath function definitions

[gjermundgaraba]

WARNING: Issue found by AI, but it seems to be correct from what I can tell.

File: spec/IBC_V2/core/ics-004-packet-semantics/PACKET.md

Issue: The receiptPath and acknowledgementPath function definitions have their byte separators swapped compared to the spec's own summary table and both reference implementations.

Current (incorrect):

func acknowledgementPath(packet: Packet)

{
  return packet.destClientId + byte(0x02) + bigEndian(packet.Sequence)
}

func receiptPath(packet: Packet) {
  return packet.destClientId + byte(0x03) + bigEndian(packet.Sequence)
}

Should be:

func acknowledgementPath(packet: Packet) {
  return packet.destClientId + byte(0x03) + bigEndian(packet.Sequence)
}

func receiptPath(packet: Packet) {
  return packet.destClientId + byte(0x02) + bigEndian(packet.Sequence)
}

Evidence:

Source	Receipt	Acknowledgement
Spec table (same file)	0x02	0x03
Spec functions (incorrect)	0x03	0x02
ibc-go (https://github.com/cosmos/ibc-go/blob/b31bf93497938b9b12d47293cb529618a62550cc/modules/core/24-host/v2/packet_keys.go#L10-L14)	byte(2)	byte(3)
solidity-ibc-eureka (https://github.com/cosmos/solidity-ibc-eureka/blob/2aaf99ee34b004fed8450eab244a50425a5a36b8/contracts/utils/ICS24Host.sol#L38-L58)	uint8(2)	uint8(3)

[linear]

SDK-451