Add an API tokens management route to create, list, and revoke PATs, showing
the plaintext token once on creation with scope and server-id selection.
Mirror the nz-csrf cookie into the X-CSRF-Token header on unsafe fetcher
methods (POST/PUT/PATCH/DELETE) for the server-side double-submit check, and
self-heal expired sessions via refresh-token without a recursive fetch loop.
Gate protected routes behind resolved auth state to avoid pre-auth SWR fetches,
and fix the login loading/race so stale probes cannot clobber the session.
Add i18n keys for the new screens across all locales.
Co-authored-by: cloudcode <cloudcode@users.noreply.github.com>
