handoff: split Q5's bundled 'measured' -- a label is as strong as its weakest cell

The port's authored/flow.json stamped title/on_cancel_why = 'MEASURED, HANDOFF
Q5' for a clause whose evidence cell in the source table reads 'none'. It did not
invent that: HANDOFF's Q5 row opened with one **measured** covering six clauses of
different strength, and HANDOFF is the document it authors against.

Split per clause. Measured: initial focus varies; up/down move one item per press
and wrap both ends; left/right do nothing; B on a submenu restores focus 4/4; B on
the main menu goes to the title in <= 0.4 s with no loading screen. NOT measured,
evidence cell empty: 'no auto-repeat at the durations tried', and 'B on the title
-> nothing'. Both marked do-not-stamp.

Also splits the source table's own up/down row, which bundled 'one item per press'
(indirectly but soundly evidenced by the 4-press wrap count) with 'no auto-repeat'
(nothing behind it, and the hedge was carrying the claim).

METHOD entry: the failure is in summarising, not at either endpoint. The source
table was honest and the consumer cited its source; flattening six claims into one
adjective created a provenance nothing supports. A strength label is not
distributive.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v

docs/re/METHOD.md

@@ -1532,3 +1532,26 @@ control is what said so, which is the only reason the weaker number never got us
 📌 Ask, before building a matcher: **does the artefact already state the answer?**
 Screens have titles, files have magic, logs have names. A derived statistic is for
 when nothing states it.
+
+## A bundled label is exactly as strong as its weakest cell
+
+`HANDOFF.md`'s Q5 row opened with a single **`measured`** and then listed **six**
+clauses of very different strength — two of which had an evidence cell reading
+`none` in the source table. The port agent's `authored/flow.json` then stamped
+`title/on_cancel_why = "MEASURED, HANDOFF Q5"` for one of those two.
+
+It did not invent that. **It read the label the summary offered**, and the summary
+was the document it is told to author against.
+
+⚠️ **The failure is in summarising, not in either endpoint.** The source table was
+honest — it had the empty cells. The consumer was honest — it cited its source.
+Flattening six claims into one adjective is what created a provenance that nothing
+supports, and provenance is the part that gets believed later, long after anyone
+would re-derive the value.
+
+**So a summary row carries a label per clause, or it carries the weakest one.**
+Never the strongest, and never one label over a list. If that makes the row ugly,
+the row is telling you it is doing too much.
+
+📌 The general shape: a strength label is **not distributive**. "These six things are
+measured" is a claim about the conjunction, and a reader takes it about each element.