The documented path for connecting Hermes Desktop to a remote backend was
`--insecure` + a pinned HERMES_DASHBOARD_SESSION_TOKEN — an unauthenticated
bind plus a copy-pasted token. Replace it everywhere with the bundled
username/password dashboard-auth provider: set HERMES_DASHBOARD_BASIC_AUTH_*,
run `hermes dashboard --host 0.0.0.0` (the non-loopback bind engages the auth
gate), and Sign in from the app.
- desktop.md: rewrite 'Connecting to a remote backend' for the user/pass + Sign in flow
- web-dashboard.md: rewrite both remote-backend sections (overview + dedicated);
reframe the auth-gate section so --insecure is a discouraged escape hatch, not a
co-equal use case; drop the removed --tui flag from the systemd example
- environment-variables.md: lead with HERMES_DASHBOARD_BASIC_AUTH_*; drop the
session-token / HERMES_DESKTOP_REMOTE_TOKEN remote-connect entries
- docker.md: mention the username/password provider as the simplest gate provider
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