Add synchronous redirect-bootstrap, direct KeyCape OIDC on sign-in, and mount
watching so the UI no longer lands on ?with=token when netkingdom is hidden
from unauthenticated mount listing. Document listing_visibility tune helper.
Streamline bao.coulomb.social login as "Sign in with KeyCape" via a versioned
nginx gateway that injects overlay assets and proxies to OpenBao. Disable chart
ingress in favor of the overlay ingress, wire make openbao-deploy, and add
openbao-verify-login-overlay with upstream drift detection.
