Refresh Fleet with discovery, operation progress, and lobby watches

src/lib/ui/stores/servers.ts

@@ -39,6 +39,7 @@ export interface ServerStatus {
 }
 
 export const statusByServer = writable<Map<string, ServerStatus>>(new Map());
+export const statusReceivedAt = writable(0);
 
 // Shared 1s ticker for elapsed-time displays. One interval feeds every card
 // on the page instead of N per-card timers. Timer starts on the first
@@ -67,6 +68,7 @@ export function startServerStream(): void {
             for (const e of data.entries) m.set(e.server, e);
             return m;
         });
+        statusReceivedAt.set(Date.now());
     });
     if (tickInterval === null) {
         tickInterval = setInterval(() => _uiNow.set(Date.now()), 1000);