feat(hub): the mail state is a panel section, and a ceiling falling is an event

The figure was a line beside the settings form, which is where it is changed
and not where it is watched. It sits with the other live figures under
Statistics now — four cards and, above them, a banner saying which of the two
ceilings has fallen. The two states are not the same to whoever is reading:
one means newcomers are turned away, the other means somebody locked out of
their account cannot get back in. The settings block keeps a line pointing at
it.

And an operator no longer has to be looking. When a global ceiling is reached
the administrators are notified — in `mail.py`, in its own session, never
raising, because this runs while a request is being refused and an alert that
fails must not turn a refusal into a 500. Once per hour, keyed on a row
rather than a flag in memory: a flood is what spends the budget, so one alert
per refusal would bury the message under its own cause, and a hub that is
refusing mail is a hub somebody is about to restart.

`/v1/admin/mail` gains `general_exhausted` and `all_exhausted` rather than
leaving the panel to compare two numbers.

Labels in all ten catalogues; `.warn-msg` for the middle state, on the
`--warn` token both themes already define.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T4YmK41VsEURWFdop4EEeT

1 files changed, 7 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
index 6518d9a..cd5da7d 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
@@ -497,6 +497,13 @@ export default {
   'admin.mail_email_change_cooldown': "Segundos até uma conta poder propor outro endereço",
   'admin.mail_save': "Salvar limites de correio",
   'admin.mail_reset_defaults': "Restaurar padrões",
+  'admin.mail_state_is_in_stats': "O consumo da hora atual aparece em Estatísticas.",
+  'admin.mail_state_hint': "Redefinições e convites podem gastar todo o orçamento; cadastros e trocas de endereço não podem usar a parte reservada. Os administradores são avisados uma vez por hora quando qualquer um dos limites é atingido.",
+  'admin.mail_left_signups': "Restante para cadastros",
+  'admin.mail_left_recovery': "Restante para redefinições e convites",
+  'admin.mail_recipients': "Destinatários contados hoje",
+  'admin.mail_alert_all': "Este hub parou de enviar e-mail nesta hora. Redefinições e convites também são recusados.",
+  'admin.mail_alert_general': "A parte para cadastros e trocas de endereço acabou nesta hora. Redefinições e convites continuam saindo.",
   'admin.settings_readonly': "Only an admin can change these settings.",
 
   // Admin stats