The Desktop App page covered install, settings, and chat but not how to
connect the app to a backend on another machine — the exact thing
@PedjaDrazic asked about. Add a 'Connecting to a remote backend' section
that explains the Session token is the dashboard token Hermes never
surfaces (pin it via HERMES_DASHBOARD_SESSION_TOKEN + run --insecure),
and link to the web-dashboard page for the full backend setup rather than
duplicating it. Add a reciprocal link from the web-dashboard remote section
back to the Desktop App page.