6ca359ae00
Architect drift review (fable gate) on 26b3d68..HEAD, full diff read. What holds: invariant 4 stays clean (ArgKind a separate closed enum at every surface), minuted scope held (aura-research and SessionFrankfurt untouched, no matrix surfacing), C18/C19 discipline held (args-free bytes golden-pinned at v1, args id-bearing, no pending builder reaches a graph on op or load path). Fixed here (high/medium items): C24's out-of-the-round-trippable-set paragraph still listed LinComb/CostSum/Session — now records their #271 entry, with SimBroker as the remaining (scalar-typed, narrower) exclusion; the pre-ship-dormancy paragraph's 'first ship freezes v1' sentence stales against the shipped data-driven v2 writer — the dormancy is recorded as ended by #271, the first exercised Tier-2 bump. Routed (low items): #341 — refuse serializing a still-pending builder on the Rust path (silent unloadable v1 artifact); version-refusal prose prints only the ceiling. Regression: aura-bench all five surfaces fingerprint OK, deltas within noise (max +2.3% wall at loadavg 2.7, report-only) — the hot path is untouched by design (bootstrap-only channel). Full workspace suite independently re-run by the orchestrator: test-exit 0. Spec and plan swept per lifecycle. refs #271, refs #341