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Add comprehensive spec audit results and pyMC_core issue reports

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- CHANGELOG.md: Full audit findings organized by severity
- PYMC_CORE_ISSUES.md: 7 evidence-based bug reports for pyMC_core
  (wrong constants, broken path_len decoding, wrong TRACE hash,
  wrong SNR calculation)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Add comprehensive spec audit results and pyMC_core issue reports

- CHANGELOG.md: Full audit findings organized by severity
- PYMC_CORE_ISSUES.md: 7 evidence-based bug reports for pyMC_core
  (wrong constants, broken path_len decoding, wrong TRACE hash,
  wrong SNR calculation)
- Remove ERRATA.md: contents already covered by audit findings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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swaitsandClaude Opus 4.6 committed 2026-04-01 21:37:57 -06:00
commit 9db901088e
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corpus/wire-format/path/hash-counts.json
+260
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@@ -0,0 +1,260 @@
{
"$schema": "../../schema/test-vector.schema.json",
"name": "Path - Hash Counts",
"spec_ref": "spec/03-path.md",
"protocol_version": 0,
"description": "Tests various hash count values including zero, small, and maximum values for each hash size.",
"vectors": [
{
"id": "hc-000",
"description": "Zero hops (hash_count=0, hash_size=1) - empty path",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 00 01000000",
"notes": "path_len=0x00. Zero-length path."
},
{
"id": "hc-001",
"description": "Zero hops with hash_size=2 - still empty path",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 2,
"hash_count": 0,
"hashes": []
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 40 01000000",
"notes": "path_len=0x40: hash_size=2, count=0. Path is still 0 bytes even though hash_size>1."
},
{
"id": "hc-002",
"description": "Zero hops with hash_size=3",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 3,
"hash_count": 0,
"hashes": []
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 80 01000000",
"notes": "path_len=0x80: hash_size=3, count=0. Path is 0 bytes."
},
{
"id": "hc-010",
"description": "Maximum count for hash_size=1: 63 hops, 63 bytes",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 63,
"hashes": [
"01",
"02",
"03",
"04",
"05",
"06",
"07",
"08",
"09",
"0A",
"0B",
"0C",
"0D",
"0E",
"0F",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"1A",
"1B",
"1C",
"1D",
"1E",
"1F",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"2A",
"2B",
"2C",
"2D",
"2E",
"2F",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"3A",
"3B",
"3C",
"3D",
"3E",
"3F"
]
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 3F 0102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F 01000000",
"notes": "path_len=0x3F: hash_size=1, count=63. Path: 63 bytes. Maximum valid path for 1-byte hashes."
},
{
"id": "hc-020",
"description": "Maximum count for hash_size=2: 32 hops, 64 bytes (exactly MAX_PATH_SIZE)",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 2,
"hash_count": 32,
"hashes": [
"0001",
"0203",
"0405",
"0607",
"0809",
"0A0B",
"0C0D",
"0E0F",
"1011",
"1213",
"1415",
"1617",
"1819",
"1A1B",
"1C1D",
"1E1F",
"2021",
"2223",
"2425",
"2627",
"2829",
"2A2B",
"2C2D",
"2E2F",
"3031",
"3233",
"3435",
"3637",
"3839",
"3A3B",
"3C3D",
"3E3F"
]
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 60 000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F 01000000",
"notes": "path_len=0x60: bits 6-7=01 (hash_size=2), bits 0-5=32. Path: 64 bytes = MAX_PATH_SIZE. Maximum valid for 2-byte hashes."
},
{
"id": "hc-030",
"description": "Maximum count for hash_size=3: 21 hops, 63 bytes",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "ack",
"route_type": "flood"
},
"path": {
"hash_size": 3,
"hash_count": 21,
"hashes": [
"000102",
"030405",
"060708",
"090A0B",
"0C0D0E",
"0F1011",
"121314",
"151617",
"18191A",
"1B1C1D",
"1E1F20",
"212223",
"242526",
"272829",
"2A2B2C",
"2D2E2F",
"303132",
"333435",
"363738",
"393A3B",
"3C3D3E"
]
},
"payload": {
"ack_crc": "00000001"
}
},
"binary": "0D 95 000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E 01000000",
"notes": "path_len=0x95: bits 6-7=10 (hash_size=3), bits 0-5=21. Path: 63 bytes. Maximum valid for 3-byte hashes (22*3=66 would overflow)."
}
]
}