fix: render markdown tables and persist message sources after refresh

fix server.js

fix: add nginx resolver and proxy_ssl_server_name for external HTTPS proxy

fix: use nginx reverse proxy to forward /api/* to backend at runtime

fix: inject VITE_API_BASE_URL build arg in Dockerfile

feat: integrate room & chat API contract updates

update dockerfile

update dockerfile

update readme

[NOTICKET] Demo Frontend

[NOTICKET] Demo Frontend

initial commit