feat: decode remaining frame fields (claim/AERE/announce/discovery-resp/EUCE/events)
- claim 552B: full layout; 240B opaque blocks proven UNCHECKED by Butler
(CLAIM_ZERO=1 ablation: zeroed blocks -> AERE still PASS) -> claim can be
built from scratch with zeros
- AERE 552B: Butler IP/MAC/netmask, fixture UID@0x33, slow counter@0xB1/0xB5,
resp@0xC0; only resp+counter vary across captures
- announce 644B: session GUID, UTF-16BE show-file path, full timestamp
@0x239 (y/mo/d/h/mi/s/ms; live sample decodes to 22:52:50.992 matching SL
session), ephemeral port@0x25C, enable flags
- discovery-resp 217B: device name, serial blob, network block, config block
- EUCE 540B: 'EUCE' magic, version 5, username+computername+GUID, host MAC
- event_b: type=4 1084B RDM-uplink frame identified (RDM response @0x3C)
- analyze: new 'xor' subcommand with periodicity analysis
44ff080ae6