fix(hub): a per-account sign-in lockout, and a reviewed unauthenticated surface

Passphrase sign-in locks per username: after `login.max_failures` wrong
passphrases (default 4) the name is refused with `429 account_locked` and a
`Retry-After` for `login.lockout_minutes` (default 60), without the passphrase
being checked. Both numbers are instance policy an admin sets from the panel;
zero failures turns it off. The per-IP limit bounds one address, and IPv6
gives every subscriber a /64 of them — an online guess targets an account, so
the account is what is counted.

- Counted by the name as typed, existing or not, so `login` stays uniform (M1).
  The key is a hash: people type passphrases into the username field.
- The attempt is taken before the check in one `INSERT … ON CONFLICT DO UPDATE
  … WHERE … RETURNING`, so a concurrent burst gets no more than the limit.
- Sign-in, passphrase change and account deletion count on the same row; the
  last had no rate limit at all.
- A lockout refuses passphrase sign-in and nothing else: sessions, renewal and
  device sign-in continue, and a reset code clears it (AV26). A session learns
  its own lockout from `/v1/users/me`, and the passphrase change checks it
  before re-wrapping any node's bundle — the hub accepts the new passphrase
  only after the nodes have it.

The SPA now shows what the hub said. `loginAndRecover` threw "Login failed:
{json}", so `email_verification_required` never matched and was never shown;
the passphrase-change form rendered no error at all in its first phase.

The unauthenticated surface, reviewed route by route:

- No `/docs`, `/redoc` or `/openapi.json`, in the code. The Caddyfile hid them
  on meshbay.org only; a packaged hub behind any other proxy published all three.
- The node socket's first message must arrive within ten seconds. It is
  accepted before anyone is known, and an unbounded read is a connection any
  stranger holds for free.
- `/v1/relays` answers 503 behind `relay.RELAYS_ENABLED`, as federation does:
  nothing in the tree calls it and two of its routes take no account.
- `test_unauthenticated_surface.py` walks every route and fails on one without
  an authentication dependency that is not listed with its reason.

Verified in Chrome against a local hub: the lockout and wrong-passphrase
messages, the admin section saving both lockout and mail limits, and the
passphrase change refused while locked. Not verified in Firefox (a running
instance blocks the headless one), nor the upsert's concurrency on PostgreSQL.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LcF3QKWii7uQ2kSyXErzCt

1 files changed, 7 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
index 2641708..6e8e191 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
@@ -86,6 +86,8 @@ export default {
   'register.resend_sent': 'Se ha enviado un nuevo código.',
   'login.pending_verification': 'Su correo electrónico aún no ha sido verificado. Revise su bandeja de entrada para obtener el código de verificación.',
   'login.verify_link': 'Verificar correo',
+  'login.invalid': "Nombre de usuario o frase de contraseña incorrectos.",
+  'login.locked': "Demasiadas frases de contraseña incorrectas para esta cuenta. Vuelva a intentarlo en {minutes} min o restablezca su frase de contraseña.",
   // Sign-in page: what MeshBay is (browser only)
   'welcome.title': 'Internet como debió ser.',
   'welcome.lead': 'MeshBay es un software de código abierto que le da acceso remoto a sus archivos personales y ejecuta aplicaciones sobre el almacenamiento de su propio ordenador:',
@@ -495,6 +497,11 @@ export default {
   'admin.mail_email_change_cooldown': "Segundos antes de que una cuenta pueda proponer otra dirección",
   'admin.mail_save': "Guardar límites de correo",
   'admin.mail_reset_defaults': "Restaurar valores por defecto",
+  'admin.login_heading': "Inicio de sesión",
+  'admin.login_hint': "Tras este número de frases de contraseña incorrectas para un mismo nombre de usuario, se rechaza el inicio de sesión con frase de contraseña durante el tiempo indicado. Las sesiones ya abiertas y los dispositivos registrados siguen funcionando, y restablecer la frase de contraseña levanta el bloqueo. 0 lo desactiva.",
+  'admin.login_max_failures': "Frases incorrectas antes del bloqueo",
+  'admin.login_lockout_minutes': "Duración del bloqueo (minutos)",
+  'admin.login_save': "Guardar límites de inicio de sesión",
   'admin.mail_state_is_in_stats': "El uso de la hora actual se muestra en Estadísticas.",
   'admin.mail_state_hint': "Los restablecimientos y las invitaciones pueden gastar todo el presupuesto; los registros y cambios de dirección no pueden tocar la parte reservada. Se avisa a los administradores una vez por hora cuando se alcanza cualquiera de los dos límites.",
   'admin.mail_left_signups': "Restante para registros",