docs: land the shared-store N-writer audit report (#230)
The store-audit research asset (#230, resolved 2026-07-12) — the shared-store
write path is not N-writer-safe; three races (non-atomic graph read-merge-write,
custody-metadata clobber-not-append, shared objects tmp collision) and the
recommended fix (an OS-advisory lock at a RepoStore::lock_shared() seam around
save_to's shared section + atomic temp+rename). It had been left untracked;
committing it finishes #230's landing.
Break-glass git commit (the loot-local state is mid-reconcile); the next ferry
ingests it (docs/agents/workflow.md). 2366e8e4 · 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.