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.
Record the multi-platform build strategy as its own decision: cargo-zigbuild
for the four non-macOS targets, the static/standalone posture per platform,
the Windows synchronization stub, the test->build matrix workflow, and the
macOS deferral with its licensing rationale (the public CI image can't carry
the SDK). Shrinks the ci-001 amendment to a pointer; updates the index.
Runtime-verified by the user: Linux x86_64 + Windows aarch64 run correctly.
claude@clouddev1