Use Location Services

Background: Native [platform] app, [SwiftUI / Compose]. Location need:
[one-time fix / continuous foreground / background updates / geofencing].
Accuracy required: [precise / approximate / coarse]. Feature: [what it's
for].

Use case: Implement location access for exactly the level I need—no more,
because over-asking gets rejected and drains battery.

Implementation details:
- Request the minimum: when-in-use before always; precise vs approximate
  (iOS reduced accuracy / Android coarse location)
- iOS: CLLocationManager authorization flow, the "Always" upgrade prompt
  timing, and background location modes if truly needed. Android:
  foreground vs background location permission (separate request on
  modern Android), and a foreground service for ongoing tracking.
- Battery-conscious settings: desired accuracy, distance filter, stopping
  updates when not needed
- Handling denied/reduced accuracy gracefully
- Privacy declarations the store will check

Layer & dependencies: Location updates exposed as an observable stream
the feature consumes; manager lifecycle tied to need, not app lifetime.

Deliverable: The location implementation for my exact need, the
authorization flow (including any upgrade prompt), the battery-saving
configuration, the reduced/denied handling, and the privacy-declaration
notes.