The object names a prior pair, a next pair, an activation height and a window; below the height only the prior pair verifies and pays, in the window either, after it only the next; the node embeds both pairs (elf/ and elf/prior/), the body rule, the payment rule and the native segment statement read one floor, the daemon refuses to start without every pair the object accepts at the tip, the manifests carry both pairs and the height; never on every object, in the digest once set. Tests known-failed first (the seven refusals on both sides of the height) and the fast-time case across it; the node branch by 18:00 UK on 9 October 2026.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>