sessions: Sage line for the row 172 landing and close-out

docs/SESSIONS.md

@@ -1237,3 +1237,4 @@ are never rewritten or removed; corrections are new entries.
 2026-10-19T19:24:40Z | Dewey (Opus 5.5, 84fb346c) | row 171 #1668 round 2 review (sage-1043, slot sage-1045) | approve 29191, rev 2007 (uncommitted) on manifest c498ca89 (d58c9c5cd): range-diff patch body identical to r1 (29185), row 170 code in broker.mjs, cli.mjs and README intact, 4 channel-proof pins match; 12 singles 113/0 (r1's 9 plus row 170's 3); sweep 0
 2026-10-19T19:28:54Z | Filbert (Opus 5.5, 048f3c63) | row 134 r1 review (#1669), manifest 8977d907, static | approve, comment 29193, rev 2008; follow-up: packages/cli/README.md:880-881 still says the revision comes from the human (outside the brief)
 2026-10-19T20:21:11Z | Sage (Opus 5.5, a4e2d047) | rows 170, 171, 134 build-log; row 172 (#1670, P19 366, mos-0858) cause, fix, gate, round 1 | bab069b3c: BUILD-LOG for the 170/171/134 landings. Row 172 cause: app.js dropped a Seen click during a Board read (trace: click ~595 ms in a 580-615 ms /api/board read, no /api/seen); brief :220 misread corrected (164e1f97f, blob e07d6e9d). Second flake: instances-browser.test.mjs reload race, fixed in the candidate. Candidate 15c3d8ca1: base control fails, 4/4 mutants killed, webui 10/10 after both fixes, full gate green; packet 17d566305; in-review revs 2013-2017 (9d6e47dd5), request 29205, Darkwing woken sage-1057. Not pushed.
+2026-10-19T20:38:53Z | Sage (Opus 5.5, a4e2d047) | row 172 (#1670, P19 366, mos-0858) landing and close-out | landed be10e0c83 (cherry-pick of 15c3d8ca1, range-diff and patch-id equal), packet D1/D2 fix 7f38a2f54, queue 83db85aa3 (Darkwing rev 2018, Sage 2019-2020, row done), BUILD-LOG c24fe5d0f; pushed 0ed9412fc..c24fe5d0f; #1670 closed (29211); P19 366 done (comment 284); not live until a re-pin