aeb92f56a7
ci / gate (push) Successful in 3m23s
macOS is no longer deferred — built natively on a Tart (Apple-Silicon) runner (real hardware → licensed SDK, no grey area). Amendment documents release-macos.yaml (dispatch-only, needs main), the libiconv de-nix + ad-hoc re-sign, the runner-label `:host` backend nuance, generation-based cache pruning, and D2-on-macOS (system libs only). All six D1 targets now produce artifacts. Updates the deferred list + index entry.