iOS decides whether "Add to Home Screen" creates a true standalone app
(no browser chrome) or a plain bookmark-style Web Clip (full Safari UI --
URL bar, share/reload/compass row, X to close) based on whatever page you
were on when you tapped it. Those tags only existed on dashboard.html and
calendar.html, so anyone adding the icon while logged out -- the normal
first-time flow, since you land on /login.html before signing in -- got
the bookmark-style icon instead of a real standalone app, exactly as
reported. Existing home-screen icons need to be deleted and re-added
after this deploys; iOS bakes in standalone-capability at creation time
and won't retroactively upgrade an icon that already exists.