Archived XMSG documents (superseded)

These notes were consolidated into the single canonical reference ../XMSG-PROTOCOL.md. They are kept for provenance only — do not rely on them; several claims in them were found wrong during validation (see the "Corrections applied" section of the canonical doc).

File	Was	Superseded by
xmsg-hdlc-protocol.md	Peer-authored wire-format spec (contained the 0x07-ack / port≪7 / offset-12 counter errors)	../XMSG-PROTOCOL.md
xmsg-hdlc-protocol-VALIDATION.md	Pcap validation of the peer spec + the 0x03 ACK discovery	folded into ../XMSG-PROTOCOL.md (Corrections + Section 6)
XMSG-Protocol-Analysis.md	NPL-symbol analysis (XM5 header, XF*/XR* codes, routing/mail categories)	merged into ../XMSG-PROTOCOL.md