Security fix: Changed from 0.0.0.0 (all interfaces) to 127.0.0.1 (localhost only)
Files modified:
- design-system/server.go
- design-system/server-temp.go
Before: http.ListenAndServe(0.0.0.0:8888, ...) - exposed on LAN/WAN
After: http.ListenAndServe(127.0.0.1:8888, ...) - localhost only
Note: server-temp.go has 60-minute auto-shutdown. Dev server was not running
at time of fix (likely auto-shut or manually killed).
James