Use your prescriber email and the password you set in the doctor portal.
renders to prevent
a flash of the wrong theme on first paint. Mirrors the storage key
used by the `mode-watcher` package ("mode-watcher-mode"); when the
saved value is "dark" — OR when no value is saved AND the OS
prefers dark — `class="dark"` is applied to at the earliest
possible moment. Defensive: wrapped in try/catch so a localStorage
exception (private mode, etc.) cannot break first paint. -->