- Type device.settings and device.capabilities from untyped maps to Freezed models
- Centralize all device settings updates through shared DeviceSettingsUpdateDatasource
- Add frequency selectors for location and heart rate, pedometer toggle, and health measurement countdown with Lottie animation
- Replace raw backend error messages with typed i18n error events across location, health, and activity meter
- Fix silent error swallowing in commands datasource and stuck dialog in locate device
