fix: guard against null startCursor in logs component

web/projects/ui/src/app/routes/portal/components/logs/logs-fetch.directive.ts

@@ -24,7 +24,11 @@ export class LogsFetchDirective {
         }),
       ),
     ),
-    tap(res => this.component.setCursor(res.startCursor)),
+    tap(res => {
+      if (res.startCursor) {
+        this.component.setCursor(res.startCursor)
+      }
+    }),
     map(({ entries }) => convertAnsi(entries)),
     catchError(e => {
       this.errors.handleError(e)

web/projects/ui/src/app/routes/portal/components/logs/logs.component.ts

@@ -52,7 +52,7 @@ export class LogsComponent {
   @Input({ required: true }) context!: string
 
   scrollTop = 0
-  startCursor?: string | null
+  startCursor?: string
   scroll = true
   loading = false
   previous: readonly string[] = []

web/projects/ui/src/app/routes/portal/components/logs/logs.pipe.ts

@@ -45,7 +45,11 @@ export class LogsPipe implements PipeTransform {
         map(() => this.getMessage(true)),
       ),
       defer(() => followLogs(this.options)).pipe(
-        tap(r => this.logs.setCursor(r.startCursor)),
+        tap(r => {
+          if (r.startCursor) {
+            this.logs.setCursor(r.startCursor)
+          }
+        }),
         switchMap(r =>
           this.api.openWebsocket$<T.LogEntry>(r.guid, {
             openObserver: {