Restore dashboard --enable-skip-login

Skip-login was stripped in an earlier "harden security" pass, which is
why the dashboard started demanding a token. Re-added it; it now runs
as the dashboard's own view-only ServiceAccount (get/list/watch), so
opening it needs no token but write access still requires the
admin-user token as before.

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
+          - --enable-skip-login
+          # Skip-login uses the "kubernetes-dashboard" ServiceAccount below,
+          # which only has get/list/watch (view-only) - so opening the
+          # dashboard needs no token, but it can't edit/delete/exec.
+          # For write access, still log in with the admin-user token
+          # (kubectl -n kubernetes-dashboard create token admin-user).
+          #
           # --token-ttl=0 was tried here to disable the 15-min idle
           # timeout, but login broke immediately after that pod came up -
           # in this dashboard version, 0 appears to mean "expire