Record the quality sweep and point the handoff at 69ba915

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/HANDOFF.md

@@ -6,8 +6,8 @@ found is in `docs/LAYOUT_LOG.md`.
 
 ## The Iris layout repair is submitted
 
-**Iris PR #19** (`layout/one-ask`) replaces closed #18. The tip is `1ebd4d3`,
-and past the reviewed `cadfba0` it is five rounds, each described in
+**Iris PR #19** (`layout/one-ask`) replaces closed #18. The tip is `69ba915`,
+and past the reviewed `cadfba0` it is six rounds, each described in
 `docs/LAYOUT_LOG.md`:
 
 - **The repair**, `add6774` and `84dad21` -- collapsed-share placement,
@@ -19,6 +19,10 @@ and past the reviewed `cadfba0` it is five rounds, each described in
 - **A clarity sweep**, `3da1c71` through `1ebd4d3` -- naming the pairs layout
   returns, `Span::slot`, a diagnostic that printed the rel base while calling
   it the box, and `in_parent` matching a place's own cases.
+- **A quality sweep**, `aea0387` through `69ba915` -- a kept contract judged
+  against the placed box rather than the box asked about, two things nothing
+  read, three reuse rejections the diagnostics could not see, and a fuzz case
+  that ran only in the long scan.
 
 The settled design of the last three is in `docs/LAYOUT.md` under "Three
 names, and the one argument that says them". Bryan settled the API over