mort issue #1611: run 8eea3e82 front-loaded a 2,245-char analysis into
its cite-call turn and closed with 220 bytes — "Done — that's the full
chain above. Short version: …". The user got the 220 bytes and a
pointer at a chain that was never posted.

finalOutput already had three shapes for this pathology, and the closer
matched none of them: too long for the weak-final cap (220 > 120), no
citations heading, and no "Citations are logged." ack to open the
summary-closer class. So it was delivered verbatim.

The three shapes were each a separate vocabulary of ack phrases, which
is why a fourth phrasing walked straight through. Two of them are really
one signal — the terminal DEFERS, telling us the answer is somewhere the
user cannot see — differing only in whether the terminal also carries
content of its own. That signal is now isBackRef, shared by both, so a
new phrasing is added once and covered in the bare and the
"+ compression" variant at the same time.

Its open-ended half is aboveRefRe: a DEICTIC "above", separated from the
preposition by what follows the word. The deictic use ends its clause
("that's the full chain above.", "as shown above,"); the preposition
always continues into a noun phrase ("above 100°C", "above the fold",
"above all, …"). pointsAbove additionally requires the reference in the
terminal's first 120 bytes — with almost no text before it in THIS
message, it cannot be pointing at the message's own content.

isSummaryCloser now opens on either the citations ack or pointsAbove.
Recovery is unchanged: the mandatory dwarf ratio and the user-message
scan boundary still gate it, so a closer only loses to a prior turn in
the same user turn that is clearly the fuller original.

Break-checked: reverting either classifier, dropping the clause-final
rule, or dropping the offset bound each kills a named test; the
unmutated control survives.

@@ -116,0 +146,4 @@
+// almost no text before it in THIS message, the reference cannot be pointing
+// at the message's own content, so it must point at a turn the user never saw
+// (the harness delivers only the final turn).
+//

@@ -116,0 +189,4 @@
+	if loc == nil {
+		return false
+	}
+	start := 0

@@ -116,0 +202,4 @@
+	return bareRemainderRe.MatchString(strings.Trim(rest, pointerResidueCutset))
+}
+
+// clauseBoundaryChars ends the clause the reference belongs to. Commas,

@@ -39,0 +73,4 @@
+// analysis1611 stands in for that run's front-loaded analysis: long enough to
+// dwarf closer1611 (>3x its 220 bytes). Shared by the finalOutput table and
+// the end-to-end Run test so the two cannot drift apart.
+func analysis1611() string {