Changes touching this path

• a bucket-backed relay reaps, because the anchor is when the bytes last landed in the store and the store is what answers it, and the reap itself moves behind the seam so the standing exemption is one rule both backends run (#1166) 39e1e1eb · dbf3dbe6…

Renames are not followed. loot's tree maps a path to an address, so a rename is a delete and an add. This list is the history of the name, not of the bytes.