New home card 'unifi.guest_wifi': shows the guest SSID, the current
rotated password (unifi.password_rotation.last_password), and a WPA
join QR built from the WIFI: string. Polls app/unifi/guest-card/data
(auth) every 60s so it updates the moment the rotation engine changes
the password — the QR regenerates client-side to match. Self-hides
until enabled with an SSID and a rotated password; grant-gated via
Admin -> Settings -> Dashboard Cards. New settings (WiFi rotation
section): enable + network name + card title.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jwed
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