ssb: Expose last successful connection time for stored connections.

apps/ssb/tf-tab-connections.js

@@ -308,6 +308,12 @@ class TfTabConnectionsElement extends LitElement {
 									<div class="w3-bar-item">
 										<tf-user id=${x.pubkey} .users=${self.users}></tf-user>
 										<div><small>${x.address}:${x.port}</small></div>
+										<div>
+											<small
+												>Last connection:
+												${new Date(x.last_success * 1000)}</small
+											>
+										</div>
 									</div>
 								</div>
 								${this.render_message(x)}