docs(track-a): coordinate promotion and research lanes

[blakinio]

SUPERSEDED by current coordinator checkpoint PR #355.

This PR is intentionally closed unmerged because its base/authority snapshot (main@8fca1c3eee453d0d4ef8a47e0f15c9dbae491b45) predates the current Track A runtime-admission, hybrid-routing, canonical-bootstrap, lane-alias and subsequent promotion state.

Historical promotion notes in this branch remain discovery/history only. They must not be used as current runtime or dispatch authority.

Current durable coordinator state is being promoted in #355 from main@250d48849ac6cce3214ca9d25e7b1abb3450ada6, with mandatory hybrid-routing fields and the current runtime nonclaims preserved:

• display :98: UNKNOWN;
• RFB 6082: UNKNOWN;
• exact-client PID/session: NOT_REGISTERED.

No runtime mutation is performed by this closure.

[blakinio]

Read-only barrier observation for active coordinator rotation 9; no branch/task ownership mutation performed.

PR #308 semantic run 31903141897 is now terminal SUCCESS on code-bearing head 5d7f4bb1aadc782f9bc69b1e292577d88fe0c4a2. Sanitized artifact 9251635451, digest sha256:118810016d53f5bc234f6216b1d2f45876422041d7539b32a942a285317c6c32, reports semantic_result=BUFFER_DATAFLOW_PROVEN.

Bounded exact-build result: 0xc20c70 allocates QBuffer, saves its shared object/control pair at local stack +0x30/+0x38, passes that pair to helper 0x1960340, and the resulting local QDataStream member is used for subsequent serialization. Artifact classification: common_qbuffer_qdatastream_binding=PROVEN, representation boundary QBUFFER_SHARED_DEVICE_TO_LOCAL_QDATASTREAM_SERIALIZATION, temporal order only DIRECT_LOCAL_CONSTRUCTION_BEFORE_LOCAL_SERIALIZATION inside this demonstrated body. protocol_framing, sequence, compression, encryption, final_binary_egress, and causal harness remain UNKNOWN; QDataStream::setDevice was not observed and must not be invented.

The #308 branch remains released/waiting and its committed STATUS.json still says UNEXECUTED; coordinator/researcher should persist the artifact-derived result only under the normal exact-head review flow.

[blakinio]

Coordinator inbox / independent promotion candidate: PR #312 (feat(track-a): add canonical live runtime lease manager) is now ready/unassigned, Draft/unmerged, with ownership released. It addresses #311 material authoritative-lock finding without touching #311/#303/#309 owned paths. Code-bearing head b52c464c6f9c1ffc2f22da70fc1c05550904d73f: custom run 31906213909 SUCCESS (unit 95064329724, Synology self-hosted 95064329739) and repository CI 31906215762 / CI / Required 95064610764 SUCCESS. Final handoff head 11c134c916e2ecdb506ff0f3fd49a981aaa312ab: custom run 31906390404 SUCCESS and repository CI 31906393230 / CI / Required 95064947784 SUCCESS; review threads 0. Durable evidence: docs/agents/evidence/OTC-20260815-track-a-live-runtime-lease-manager/20260815-authoritative-lease-manager.md. Required independent disposition before promotion; do not enable canonical live reuse or declare :98 canonical merely from this candidate.