Changes touching this path

• loot log grows --graph, and the half this ticket is named for turns out to have landed already: #1494 built the per-head sectioned listing, so the 255 refusal on a diverged repo was gone before this started and three of the six criteria were already met - and --all is dropped rather than built, because loot's default listing is already the union of every head while git needs that flag only to widen from HEAD's ancestry, so porting the spelling would have shipped a flag that changes nothing. What is left is the drawing, and it goes in behind a seam rather than inside the formatter: topology.rs resolves each row's recorded parents into indices within the listing and flattens the fork's three sections into one children-first sequence, holding the two derived facts a JSON parents array and an ASCII gutter would otherwise compute separately and disagree about silently, so #1540 can emit machine topology off Topology.nodes without touching lay_out or draw. HistoryRow gains parents from graph_view, ids only, so no manifest materializes and the 507 ms d6be741 removed stays removed - and no DAG walk was needed at all, because the per-head and shared split is already a valid children-first order, which makes the whole feature one map lookup per recorded parent rather than a second traversal. The empty head is named above the drawing rather than drawn, since a head recording no changes of its own is the one fact a picture cannot show by drawing it and a two-head repo would otherwise look unforked, and the shared-history heading goes away under --graph because the join is visible as a merge line instead of a third section to correlate by eye. The fork pin is extended rather than replaced, --all is pinned as refused with its reason in both the unit gate and the smoke test, four independent breakages were each proved red before the tests were trusted, and a join drawn as a fork opening - which abandoned the leftmost column and indented a thousand rows under a lane that had already ended - was a layout defect only the real two-head repo showed (#1497) e963a2a9 · 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.