site.webmanifest declared no start_url, so the page that linked
it became one and an install started inside a room reopened that
room on every launch. It now declares "/", moves out of public/
and takes VITE_APP_TITLE for name and short_name, which shipped
empty and leaned on the browser falling back to the title.
The frontend Dockerfile now declares that build argument, so the
value compose.yml passes stops being dropped.
davd-gzl