The handoff said "three rounds" over four bullets and carried the detail of
each, which belongs in the findings log. It now names the four and their
commit ranges and points at `LAYOUT_LOG.md`, which gains the naming and
sweep round in full.
The check section split in two: the cheap gate runs on every change
including a rename, because the cold dump is the only thing that catches two
same-typed values being swapped; the seed scans run only when the change can
alter what layout computes, and never with the tree still moving under them.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
iris-aiandClaude Opus 5
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