fixup! diigo-cache: RSS in diigo's export shape, from cached items

A diigo note item's body (note_content) renders first, as a Highlight:
line, as the export does: the 6 "export has notes, cache none" items
from the comparison were notes whose bodies the cache had all along.

Generated-by: Claude Opus 5.5

diigo-cache/src/rss.ts

@@ -24,14 +24,16 @@ const list = (v: unknown): Record<string, unknown>[] => (Array.isArray(v) ? (v a
  * `Tags:a,b;Description:…;Annotations and Sticky notes:…` — tags
  * comma-separated (`no_tag` when none), then each highlight as
  * `Highlight:<text>\n` followed by its sticky notes, one
- * `Sticky notes:<text>\n` each (notes may span lines)
+ * `Sticky notes:<text>\n` each (notes may span lines). A diigo *note*
+ * item's body (`note_content`) comes first, as a `Highlight:` line.
  */
 export function itemDescription(item: Item): string {
 	const tags = str(item.tags) || "no_tag";
+	const body = str(item.note_content) ? `Highlight:${str(item.note_content)}\n` : "";
 	const notes = list(item.annotations)
 		.map((a) => `Highlight:${str(a.content)}\n${list(a.stickyNotes).map((n) => `Sticky notes:${str(n.content)}\n`).join("")}`)
 		.join("");
-	return `Tags:${tags};Description:${str(item.description)};Annotations and Sticky notes:${notes}`;
+	return `Tags:${tags};Description:${str(item.description)};Annotations and Sticky notes:${body}${notes}`;
 }
 
 /** one `<item>`: title, link, packed description. The title is whole