mDNS service not discoverable with correct hostname #9040

Description

The mDNS service publication was missing an explicit host configuration, which caused the service to not be
properly discoverable with the opencode.local hostname on the local network.

Current Behavior

• The mDNS service is published without a host field, so it uses the system's default hostname instead of
  opencode.local
• The CLI displays opencode.local without the port number, which is misleading

Expected Behavior

• The mDNS service should be discoverable at opencode.local
• The CLI should display the full address including the port (e.g., opencode.local:3000)

Steps to Reproduce

1. Start the web server with mDNS enabled
2. Try to discover the service using dns-sd -B _http._tcp or a Bonjour browser
3. Notice the service is not advertised with opencode.local as the hostname

Plugins

No response

OpenCode version

No response

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response