Disable dashboard session timeout so login persists

Default --token-ttl is 900s (15min idle), which was forcing re-entry of
the token repeatedly. Setting it to 0 makes a logged-in session
persist instead of expiring back to the login screen.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

manifests/alaska/k8s-dashboard.yaml

@@ -62,6 +62,13 @@ spec:
         args:
           - --auto-generate-certificates
           - --namespace=kubernetes-dashboard
+          # Disables the default 15-minute idle session timeout, so a
+          # logged-in session persists instead of dropping back to the
+          # token screen. The service account token itself already
+          # doesn't expire (it's a Secret-backed legacy token, not a
+          # short-lived TokenRequest one) - this was purely the
+          # dashboard's own session cache.
+          - --token-ttl=0
         volumeMounts:
         - name: kubernetes-dashboard-certs
           mountPath: /certs