feat: migrate all remaining authentication and session flash messages to gettext

Completes the flash message migration by converting all remaining user-facing strings:

**UserAuth.ex changes:**
- All Plug functions: require_sudo_mode, require_authenticated_user, require_superuser
- load_current_organization error messages (3 messages)
- All LiveView on_mount callbacks (8 auth-related messages)
- Policy consent success message

**SessionManager.ex changes:**
- Mobile device session management (2 messages)
- Alert preferences updates (3 messages including conditional)

All messages now use t_auth() for consistent translation in the auth domain.

All tests passing (100 tests).

lib/towerops_web/live/user_settings_live/session_manager.ex

@@ -2,6 +2,9 @@ defmodule ToweropsWeb.UserSettingsLive.SessionManager do
   @moduledoc """
   Handles browser session and mobile device session management.
   """
+  use Gettext, backend: ToweropsWeb.Gettext
+
+  import ToweropsWeb.GettextHelpers
 
   alias Towerops.Accounts
   alias Towerops.MobileSessions
@@ -13,11 +16,11 @@ defmodule ToweropsWeb.UserSettingsLive.SessionManager do
     case MobileSessions.revoke_session(session_id) do
       {:ok, _} ->
         socket
-        |> Phoenix.LiveView.put_flash(:info, "Mobile device removed successfully.")
+        |> Phoenix.LiveView.put_flash(:info, t_auth("Mobile device removed successfully."))
         |> assign_mobile_sessions()
 
       {:error, _} ->
-        Phoenix.LiveView.put_flash(socket, :error, "Failed to remove mobile device.")
+        Phoenix.LiveView.put_flash(socket, :error, t_auth("Failed to remove mobile device."))
     end
   end
 
@@ -29,14 +32,14 @@ defmodule ToweropsWeb.UserSettingsLive.SessionManager do
 
     case MobileSessions.update_alert_preferences(session_id, %{alerts_enabled: enabled_bool}) do
       {:ok, _} ->
-        message = if enabled_bool, do: "Alerts enabled for device", else: "Alerts disabled for device"
+        message = if enabled_bool, do: t_auth("Alerts enabled for device"), else: t_auth("Alerts disabled for device")
 
         socket
         |> Phoenix.LiveView.put_flash(:info, message)
         |> assign_mobile_sessions()
 
       {:error, _} ->
-        Phoenix.LiveView.put_flash(socket, :error, "Failed to update alert preferences.")
+        Phoenix.LiveView.put_flash(socket, :error, t_auth("Failed to update alert preferences."))
     end
   end
 

lib/towerops_web/user_auth.ex

@@ -656,7 +656,7 @@ defmodule ToweropsWeb.UserAuth do
           socket =
             socket
             |> Phoenix.Component.assign(:policies_needing_consent, [])
-            |> LiveView.put_flash(:info, "Thank you for accepting the updated policies.")
+            |> LiveView.put_flash(:info, t_auth("Thank you for accepting the updated policies."))
 
           {:halt, socket}
 

priv/gettext/auth.pot

@@ -212,3 +212,81 @@ msgstr ""
 #, elixir-autogen, elixir-format
 msgid "✓ Real-time alerts and notifications"
 msgstr ""
+
+#: lib/towerops_web/live/user_settings_live/session_manager.ex:35
+#, elixir-autogen, elixir-format
+msgid "Alerts disabled for device"
+msgstr ""
+
+#: lib/towerops_web/live/user_settings_live/session_manager.ex:35
+#, elixir-autogen, elixir-format
+msgid "Alerts enabled for device"
+msgstr ""
+
+#: lib/towerops_web/live/user_settings_live/session_manager.ex:23
+#, elixir-autogen, elixir-format
+msgid "Failed to remove mobile device."
+msgstr ""
+
+#: lib/towerops_web/live/user_settings_live/session_manager.ex:42
+#, elixir-autogen, elixir-format
+msgid "Failed to update alert preferences."
+msgstr ""
+
+#: lib/towerops_web/live/user_settings_live/session_manager.ex:19
+#, elixir-autogen, elixir-format
+msgid "Mobile device removed successfully."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:440
+#: lib/towerops_web/user_auth.ex:447
+#: lib/towerops_web/user_auth.ex:512
+#: lib/towerops_web/user_auth.ex:521
+#, elixir-autogen, elixir-format
+msgid "Organization not found."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:292
+#: lib/towerops_web/user_auth.ex:571
+#, elixir-autogen, elixir-format
+msgid "Please verify your identity to continue."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:659
+#, elixir-autogen, elixir-format
+msgid "Thank you for accepting the updated policies."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:299
+#: lib/towerops_web/user_auth.ex:579
+#, elixir-autogen, elixir-format
+msgid "Two-factor authentication is required for this action."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:434
+#: lib/towerops_web/user_auth.ex:504
+#, elixir-autogen, elixir-format
+msgid "You don't have access to this organization."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:365
+#: lib/towerops_web/user_auth.ex:550
+#, elixir-autogen, elixir-format
+msgid "You must be a superuser to access this page."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:618
+#, elixir-autogen, elixir-format
+msgid "You must be an organization owner to access this page."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:348
+#: lib/towerops_web/user_auth.ex:482
+#, elixir-autogen, elixir-format
+msgid "You must log in to access this page."
+msgstr ""
+
+#: lib/towerops_web/user_auth.ex:600
+#, elixir-autogen, elixir-format
+msgid "You must set up two-factor authentication to continue."
+msgstr ""