diff --git a/containers/120-mule-images.md b/containers/120-mule-images.md
index 56353b6..0270b10 100644
--- a/containers/120-mule-images.md
+++ b/containers/120-mule-images.md
@@ -80,6 +80,16 @@ For pushes from inside the LXC, gitea creds at `/etc/mule-deploy/git-credentials
 
 ## Changelog
 
+### 2026-05-10 — right sidebar restructure (heap pinned, single scroll, collapsible Metadata)
+
+The right sidepanel had three stacked flex regions: `<ActiveHeapCard />`, `<Header />`, and `<PhotoInfoPanel />` — with `PhotoInfoPanel` carrying its own internal scroll. That left the editable fields (filename, title, notes, rating, color, flag) stuck above the readonly metadata scroll, effectively two scroll boundaries on one sidebar.
+
+- Moved the scroll boundary up to `RightSidebar.tsx`: only `ActiveHeapCard` and `Header` stay pinned now. Editable + readonly content scroll together in one `flex-1 overflow-y-auto` region beneath them.
+- `PhotoInfoPanel.tsx` dropped its `h-full` / inner `flex-1 overflow-y-auto`.
+- The four readonly sections (Tags / Basic Info / Camera / Location) are now wrapped in a single outer "Metadata" `Collapsible`. Default expanded, one click hides the whole block. Sub-sections stay individually collapsible.
+
+`PreviewView` reuses `RightSidebar` under an `<aside class="overflow-hidden">`, so the change applies in both the grid sidebar and the preview overlay.
+
 ### 2026-05-10 — `photos.hubris.network` perf sweep
 
 User reported slow load. Five fixes shipped, in order: