ssb: The unread line can be used to make everything above read.

apps/ssb/tf-news.js

@@ -233,7 +233,19 @@ class TfNewsElement extends LitElement {
 									<div
 										style="border-bottom: 1px solid #f00; flex: 1; align-self: center; height: 1px"
 									></div>
-									<div style="color: #f00; padding: 8px">unread</div>
+									<button
+										style="color: #f00; padding: 8px"
+										class="w3-button"
+										@click=${() =>
+											this.dispatchEvent(
+												new Event('mark_all_read', {
+													bubbles: true,
+													composed: true,
+												})
+											)}
+									>
+										unread
+									</button>
 									<div
 										style="border-bottom: 1px solid #f00; flex: 1; align-self: center; height: 1px"
 									></div>