ssb: The sync button indicates if a one-shot sync is active.

apps/ssb.json

@@ -1,5 +1,5 @@
 {
 	"type": "tildefriends-app",
 	"emoji": "🦀",
-	"previous": "&caGw+RHTGO/WBWQDiRRv/9/SDZPS3w8U4xNafZEQrYw=.sha256"
+	"previous": "&19R5jeKIx2u51L6xPL3gV7EXOhHksKNCuTHt+SBEZjg=.sha256"
 }

apps/ssb/tf-app.js

@@ -573,7 +573,7 @@ class TfElement extends LitElement {
 				style="position: static; top: 0; z-index: 10"
 			>
 				<button
-					class="w3-bar-item w3-button w3-circle w3-ripple"
+					class=${'w3-bar-item w3-button w3-circle w3-ripple' + (this.connections?.some(x => x.flags.one_shot) ? ' w3-spin' : '')}
 					@click=${this.refresh}
 				>
 					↻