v1.1.0-dev08

Added

• Server-status endpoint for the in-app Updates panel. New /api/updates/server-status route so PWA admins on the Updates page see a Server section with their running server version, the latest release on the current channel, and a "you're behind" indicator with a copy-paste docker-compose pull command. Ports the exact same shape NutriTrace has had for weeks. Redeploy your server to pick this up (docker compose pull && docker compose up -d), then the Server row appears on the Updates page.