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 — Chapters
+
+**Images** — web `sha256:790ff73a…`, server `sha256:181d77be…`
+
+The server image changed: it takes a `chapters` table and a `chapter_id` column
+on notes, both added on start.
 
 **Added**
 - **Chapters — folders inside a notebook.** A note is in one or in none; tapping