Changes touching this path

• loot log gets a machine shape, and the seam it needed turns out to have existed all along: every verb already renders through Emit, so nothing had to be plumbed - what was missing is that the prose-only verbs return Message, which collapses their structure into a String at the cmd_ site, before the format is known. So adding machine output is not teaching the renderer a second format, it is stopping a verb destroying its own data on the way out, which is why it cannot be done to forty-seven verbs mechanically and why this ticket does one. Log, LogChange and LogWorking hold the structure and render all three formats from it, consuming topology.rs by making the same two calls --graph makes and reading row, edges, elided and merge straight off the nodes - no second walk, no ancestry query, and the module never sees a Workspace, so the manifests d6be741 stopped materializing stay unmaterialized. The load-bearing subtlety is that edges are indices into the shipped array, so --reverse has to happen before Topology::of rather than after, and the pin reads edges back as version-byte pairs so a wrong index cannot pass as a right one. The empty head is why head rows exist at all: b0cffc66 records no changes of its own, so it has an H row and no change row anywhere, and without the head rows a two-head repo would reach a machine reader looking unforked. What stops the other verbs being forgotten is a census that names rather than counts, two set-equal lists over derived vectors plus a sum, reusing the existing machine_output_verbs so it cannot disagree with the USAGE census - and the debt list may only shrink. Two ADRs are amended rather than edited past: 0023 quotes its own sentence that nothing needs machine output from log or manifest and says log graduates while manifest does not, and narrows its porcelain-first framing as written for a homogeneous per-path verdict rather than a shape with nested arrays; 0066's three counts had to move in place because a test asserts them against the roster. And both numbers in this ticket's scoping were wrong the same way source_walk was wrong in 9559f0a, a grep for one spelling of a thing with two: the table holds 66 verbs and not 54 because twelve rows are verb_of, sixteen took a machine selector and not seven, and ADR 0066 had recorded the right figures three weeks earlier. Criterion four had nothing to satisfy, because the SDK never calls loot log at all (#1540) 915db92c · 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.