sage: Part B window file, the read window's end stamp from the clock (10:29Z, not 10:40Z)

agents/sage/work/window-plan/repin-partB-proof.md

@@ -184,7 +184,7 @@ Prune nothing. Keep every copy, rollback set and backup Part A kept, plus B3's a
 
 ## What Sage ran for this file
 
-Read only, 2026-10-20 between 10:26Z and 10:40Z. Nothing live changed.
+Read only, 2026-10-20 between 10:26Z and 10:29Z. Nothing live changed.
 
 - `git fetch` and `git rev-parse origin/refactor` (a843ae284), the pointer's copy, activation, pm, schema and
   console fields.