Stock-client Iceberg REST conformance proven by a PyIceberg round-trip:
object-shaped map fields, listTables, real ErrorModel exception types,
spec-correct namespace semantics, honest update rejection, fail-closed
commit-requirement validation. FABLE-REVIEW-1 review + Phase 1
guardrails, Benchmark Suite + LAKECAT-SAIL.md docs, gate-contract
repairs, published Grust 0.12.0 (Lobster) + TypeSec 0.12.0 (Torcello).
Release-candidate proof from clean head 6bfce1ef.