duckworth: row 269 design early look (duckworth-0150) no blockers on 875b7eeeb, C1-C4

docs/SESSIONS.md

@@ -1483,3 +1483,4 @@ are never rewritten or removed; corrections are new entries.
 2026-10-22T14:10Z | Duckworth (Opus 5.5) | row 264a r13 commit 21 and manifest r13b recheck (duckworth-0145) on 84f53540d | 257408e9 ok: 29 blobs match, path set = base..tip, BUILD.md only vs 65e04d27. M2 killed on receive assertions :89/:422. Ready for the in-review move |
 2026-10-22T14:15Z | Duckworth (Opus 5.5) | row 264a #1769 manifest round 1 on r13b 257408e9 / 84f53540d (duckworth-0146) | approve, C1-C7 met under mos-1276..1279, skips named (webui esbuild, queue root, row 244 provider) |
 2026-10-22T14:30Z | Duckworth (Opus 5.5) | row 253 #1758 rebase check on final base aca16404c, 0604d91fc, manifest 573c51cf (duckworth-0149) | static part no blockers: 9= 2 append-context, 6 blobs = d213, appends byte-exact, union 25+2 complete; run-log part waits on focused run; N1 stack-upgrade args doc |
+2026-10-22T14:41Z | Duckworth (Opus 5.5) | row 269 (264b #1774) design early look on 875b7eeeb (duckworth-0150) | no blockers; v2 and legacy cwd bind agreed; C1 two missed sessions.json readers + rollback surfaces, C2 M6 masked by tick/check halt fences, C3 M4 needs realpath-only input, C4 end-launch.test:193 old assertion to Mos |