Changes touching this path

• loot grant stops issuing an untimed key for an embargoed path whose ciphertext has rotted, because the verb asks for a reveal_at directly instead of reconstructing one from a visibility whose absence has meant held-but-unreadable as well as not-held since #1545, and a timing that cannot be read now refuses instead of defaulting to zero (#1578) d291d168 · 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.