Implemented battery status method matching Android functionality:
getBatteryStatus():
- Gets battery level (0-100%) using UIDevice
- Detects charging state (charging or full)
- Maps battery state to power state code (0=unknown, 1=unplugged, 2=charging, 3=full)
- Returns isOptimizationExempt (always false on iOS - no battery optimization)
- Enables battery monitoring automatically
iOS Adaptations:
- Uses UIDevice.current for battery information
- Battery optimization not applicable on iOS (Background App Refresh is system setting)
- Returns -1 for battery level if unknown
Progress: 16/52 methods implemented (31% complete)
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