Omit Files section when no files are present

render.go

@@ -232,6 +232,13 @@ func listEntries(fsPath, urlPath, sortKey, order string) []entry {
 	sortEntries(folders, sortName, order)
 	sortEntries(files, sortKey, order)
 
+	// Nothing to list (only index.md, which is rendered above): return no
+	// entries so the Files section is suppressed entirely rather than showing
+	// an empty listing with just the `..` row.
+	if len(folders) == 0 && len(files) == 0 {
+		return nil
+	}
+
 	// `..` row mirrors the header Up button so the listing itself is
 	// navigable without reaching for the header on mobile. Prepended after
 	// sort so it always sits at the top regardless of folder names.