Record the digests of the images that went out

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -8,7 +8,12 @@ not from the output of `docker push`.
 
 ---
 
-## Unreleased
+## 2026-08-12 — Covers, the search box, and room to write in the margin
+
+**Images** — web `sha256:c1222665…`, server `sha256:06f94f43…`
+
+The server image changed: it sends the default number of versions with the
+account, so the notebook dialog can name it instead of guessing.
 
 **Added**
 - **Patterned notebook covers** — ruled paper, graph paper, pinstripe, bands,