Unsupported

The harness cannot reach the links under its rooms, so this suite's partition, resume and host-loss obligations are unproven on it.

trackingUrl is not optional and not defaulted: an umbrella constant would let every subclass point at the same permanently-open issue, which is how a declaration decays back into a skip. Point it at the harness's own blocking issue — the thing that would have to change for this arm to become Supported.