feat(kiosk): hotspot and mobile data toggles

[AkarinServer]

What

Add network controls in Kiosk Settings:

• Hotspot toggle (best-effort)
• Mobile data toggle (best-effort)

Notes

• Hotspot uses Android LocalOnlyHotspot when available; falls back to opening system settings if not supported.
• Mobile data toggle attempts Settings.Global 'mobile_data'; if blocked by system permission, it opens Internet settings panel.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Request location permission before starting hotspot

On Android 6+ startLocalOnlyHotspot() requires the ACCESS_FINE_LOCATION runtime permission (and location services on), but this path doesn’t check/request it before calling the API. On a fresh install where the user hasn’t granted location permission in app settings, this throws/returns failure and the UI fallback only opens tether settings, which won’t grant the app permission. Result: the hotspot toggle will consistently fail until the user manually grants location permission in the app settings.

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