[SandObserver]

Summary

• Add a showIp toggle to the Connections VPN settings for Gluetun, off by default, with a hint that the address is visible to anyone who sees the dashboard.
• Drop ip from the VPN data response on the server when showIp is not on, so the address never reaches the browser.
• Translate the new label and hint in all six languages.

Testing
All green, Docker build included. Added 2 tests for the VPN data response with and without showIp.

Changelog

Changed

• The VPN view no longer shows the public IP address unless Show IP Address is turned on in its settings.

Checklist

• Stays within the project constraints: one container, no runtime dependencies, no build step (see CONTRIBUTING.md).
• Tests added or updated for new logic, and the full suite, lint, and typechecks pass.
• Docs updated if behavior or configuration changed.