docs(track-a): promote player inbound static dispatch

[blakinio]

Coordinator promotion/closeout for researcher Draft #512 / OTC-20260818-track-a-s2-player-inbound-static.

Decision: ACCEPT_WITH_EDITS.
Trusted base: main@a9e7ab21ed0962482e4381aadd50be92714785a6.
Source final head: d0c78772294cd6355221cce96f499b85fb7738cf.

Promoted exact-client results:

TPlayerProtocolMessageHandler QMeta: PROVEN
  vptr 0x308a008
  staticMetaObject 0x30852a0
  qt_static_metacall 0xd1a920
  22 methods / 22 signals
  dispatch table 0x1d713d0

receivedPlayer* direct QMeta ownership by TPlayerProtocolMessageHandler: DISPROVEN

TProtocolMessageQueue received-player owner: PROVEN
  staticMetaObject 0x3085b60
  qt_static_metacall 0xdf5fe0
  355 methods / 192 signals
  dispatch table 0x1d8bd6c

34  receivedPlayerDataCurrentMessage(GameserverMessagePlayerDataCurrent) @ 0xdf8bc1
43  receivedPlayerDataBasicMessage(GameserverMessagePlayerDataBasic) @ 0xdf8d3b
48  receivedPlayerStateMessage(GameserverMessagePlayerState) @ 0xdf8e0d
49  receivedPlayerSkillsMessage(GameserverMessagePlayerSkills) @ 0xdf8e37
117 receivedPlayerInventoryMessage(GameserverMessagePlayerInventory) @ 0xdf899f

Every listed signal stub invokes QMetaObject::activate@0x4dedc0 with the corresponding signal index. This promotes the S1 lexical player correspondence to an exact static protobuf-type -> TProtocolMessageQueue signal contract.

Still deliberately UNKNOWN:

network decoder -> queue signal emission
queue signal -> connected receiver
exact receiver member/QSlotObject
handler -> TPlayerData mutation
TPlayerData XYZ candidate as inbound storage/runtime authority

Source evidence came from two successful exact-client GitHub-hosted producers (32115252111 / 95643199117, 32115662884 / 95644479664). The temporary producer workflow is absent from the promotion diff. No official client execution, Synology/X11/process memory/credentials/login/gameplay or PR #475 runtime observation/mutation occurred.

Source final exact-head validation after the admission-metadata repair:

Track A governance 32116406977 = SUCCESS
  Deterministic admission-policy audit 95646794390 = SUCCESS
  Fresh admission behavior audit      95646794402 = SUCCESS
CI 32116407136 = SUCCESS
  CI / Required                       95646841777 = SUCCESS
reviews = 0
unresolved review threads = 0
main freshness = PASS

This PR archives the researcher task and adds the coordinator promotion record. Physical E2E is NOT_APPLICABLE because this is static exact-file discovery only.