Published an OpportunityMarksUpdated event when an opportunity's marks change over the API

internal/cli/serve/command.go

@@ -136,6 +136,11 @@ set, the API serves the stored opportunities under /api/opportunities.`,
 				)
 			}
 
+			// Events from the sources and the API, such as new opportunities and
+			// changed marks, are pushed to every WebSocket client.
+			var bus events.Bus
+			options = append(options, server.WithEvents(&bus))
+
 			appServer, err := server.New(&conf.Server, options...)
 			if err != nil {
 				return err
@@ -146,12 +151,6 @@ set, the API serves the stored opportunities under /api/opportunities.`,
 			runCtx, cancelRun := context.WithCancel(ctx)
 			defer cancelRun()
 
-			// Events from the sources, such as new opportunities, are pushed to
-			// every WebSocket client.
-			var bus events.Bus
-			bus.Subscribe(func(event events.Event) {
-				appServer.PushEvent(event.Type, event.Payload)
-			})
 			fetcherOptions = append(fetcherOptions, fetcher.WithEvents(&bus))
 
 			sourceFetcher := fetcher.New(&conf.Sources, fetcherOptions...)