diff --git a/docs/WhatsNew.md b/docs/WhatsNew.md
index ffcd660..e6ac979 100644
--- a/docs/WhatsNew.md
+++ b/docs/WhatsNew.md
@@ -14,3 +14,7 @@ is now possible, fixed, or visible. For the internals, see
 `docs/journals/INDEX.md` and the per-iter journal files it points at.
 
 ---
+
+## 2026-05-11 — implement cycle no longer eats your context
+
+The implement cycle no longer eats your context. From the next time we run it, the whole per-task review loop runs inside a dedicated subagent and sends back a short end-report — typing the chatter into someone else's window, so to speak. Each iter gets its own branch; merging or discarding is your call, and rollbacks become trivial. The 14k-line journal monolith is split into per-iter files with a small index for navigation; the old file is archived. Audit ran clean — no benchmark regressions; a small follow-up sweep fixed four spots where I'd missed stale references to the old layout.