Auto-activate kiosk mode on launch when previously enabled

[nstefanelli]

Summary

Fixes #4608.

When kiosk mode is enabled and the Home Assistant app is then force-quit, crashes, or the device reboots, kiosk mode does not re-activate on the next launch. The persisted settings.isKioskModeEnabled = true is loaded into memory by KioskModeManager.loadSettings() but never acted on, so the user has to manually re-toggle kiosk mode from settings each time. For the wall-mounted iPad use case kiosk mode is designed for, this leaves an unattended dashboard silently falling back to the normal UI after any restart.

What changed

In KioskModeManager.setup(using:) (called from WebViewController.viewDidLoad), if settings.isKioskModeEnabled is true and kiosk mode is not already active, call enableKioskMode() to restore it.

enableKioskMode() is idempotent — it guards on !isKioskModeActive — so this is safe to call from any path and existing flows are unaffected.

// Restore kiosk mode if it was enabled before the app was last closed
if settings.isKioskModeEnabled, !isKioskModeActive {
    Current.Log.info("Restoring kiosk mode from persisted settings")
    enableKioskMode()
    return
}

Test plan

• Enable kiosk mode in the app
• Force-quit the app from the app switcher
• Re-launch
• Verify the screen comes back up in kiosk mode (status bar hidden, screensaver active, secret exit gesture working)
• Reboot the device — verify kiosk mode is still on after launch
• Disable kiosk mode, force-quit, re-launch — verify it stays disabled

Notes

• KioskModeManager is a singleton with UIKit dependencies and no existing tests, so I haven't added a unit test here. Happy to add one if there's a preferred pattern for managers like this.
• Out of scope (per the issue): a "panic recovery" guard so a crash loop inside kiosk mode does not trap the user. Worth a follow-up.
• Local xcodebuild was blocked by an unrelated BuildMaterialDesignIconsFont script failure in my environment, but swiftformat --lint passes and the change uses existing APIs that mirror the adjacent code path.

[Copilot]

Pull request overview

This PR fixes #4608 by ensuring Kiosk Mode is automatically re-activated on app launch when it was previously enabled (persisted in KioskSettings), addressing the wall-mounted dashboard use case where restarts currently fall back to normal UI.

Changes:

• In KioskModeManager.setup(using:), detect settings.isKioskModeEnabled == true and call enableKioskMode() when kiosk mode isn’t already active.
• Add a log entry indicating kiosk mode is being restored from persisted settings.

[bgoncal]

LGTM! Just missing the test that copilot has catch