Add double-VPN cascade from entry server to exit server.

Co-authored-by: Cursor <cursoragent@cursor.com>

translations/en.json

@@ -519,5 +519,24 @@
   "restore_protocol_backup_confirm": "Restore this backup on the server? Current protocol files will be overwritten and the container will restart.",
   "restoring_protocol_backup": "Restoring… please wait",
   "restore_protocol_backup_done": "Backup restored",
-  "refresh": "Refresh"
+  "refresh": "Refresh",
+  "cascade_title": "Cascade (double VPN)",
+  "cascade_desc": "Clients connect to this entry server; internet exits through another server — to bypass country blocks.",
+  "cascade_hint": "Entry and exit must both have AmneziaWG/WireGuard installed. Give users the entry server config only.",
+  "cascade_entry_protocol": "Protocol on this server (entry)",
+  "cascade_exit_server": "Exit server",
+  "cascade_exit_server_none": "— Select server —",
+  "cascade_exit_protocol": "Protocol on exit server",
+  "cascade_enable": "Enable cascade",
+  "cascade_disable": "Disable cascade",
+  "cascade_working": "Setting up cascade…",
+  "cascade_disabling": "Disabling cascade…",
+  "cascade_enabled": "Cascade enabled",
+  "cascade_disabled": "Cascade disabled",
+  "cascade_off": "Off",
+  "cascade_on": "Active",
+  "cascade_configured_down": "Configured, tunnel down",
+  "cascade_exit_required": "Select an exit server",
+  "cascade_enable_confirm": "Enable cascade? A service client will be created on the exit server and a tunnel will be set up on this entry server.",
+  "cascade_disable_confirm": "Disable cascade on this server?"
 }