docs(track-a): promote P2 outbound sequence

[blakinio]

Coordinator promotion for Draft researcher #495 / OTC-20260817-track-a-p2-sequence-provenance.

Decision: ACCEPT_WITH_EDITS.
Trusted base: main@0aed48da9a51730c590d0ffe4688f149b359a170.
Source final head: 4a98632046936fba070653196d91e9f82e6b07e7.

Independent review of exact hosted run 32044825898 proves that TGameserverDualConnection+0x80@0xb56d60 writes its object-local DWORD[this+0x9c] into the canonical DWORD(message+0) and then increments the counter when message+0x34 == 3; the nonmatching branch explicitly writes zero. Canonical framing PR #494 independently proves this exact field is serialized before the raw payload.

Promoted result:

FRAMING=PROVEN
SEQUENCE=PROVEN
COMPRESSION=UNKNOWN
ENCRYPTION=UNKNOWN
FINAL_BINARY_EGRESS=PROVEN_AT_QT_QTCPSOCKET_BOUNDARY
FINAL_SOCKET_OWNER=FACT:TGameserverTCPConnection
FINAL_OS_SOCKET_SYSCALL=UNKNOWN

The sequence initial/reset policy remains UNKNOWN; no unsupported lifetime semantics are inferred.

Source exact-head validation: governance 32045117129 = SUCCESS; CI 32045117287 = SUCCESS; CI / Required 95431242465 = SUCCESS; final diff exactly 3 task/evidence files; reviews/threads 0/0; one-shot workflow removed.

E2E NOT_APPLICABLE — static exact-file/disassembly evidence only.

Next frontier after merge: exact type/provenance and input/output semantics of RawDataProcessor member transform 0xb3ec30, with encryption and compression classified independently.