- Probe relay hosts through a throwaway E2EE tunnel in the host switcher
instead of an HTTP probe against the relay:// pseudo-URL, which always
reported Unreachable
- Show 'via OpenChamber Relay' for relay hosts in the switcher and the
servers list instead of the raw relay:// pseudo-URL; hide the URL-centric
edit action for relay hosts (saving it would drop the tunnel descriptor)
- Pairing LAN candidate prefers the address the requesting client actually
reached the server on; interface scanning could pick an unroutable virtual
bridge (docker0), producing links whose LAN leg silently failed and forced
devices onto the relay