Ship HDF EFFECT to PRO only, and clean the build for Play

Rename LIGHT GLOW to HDF EFFECT and gate it behind PRO: LITE renders the
chip greyed out with a PRO tag and cannot open its slider; restoration of
older settings that carry hdf > 0 still blocks export in LITE.

Play/licence pass:
- drop unused permissions (ACTIVITY_RECOGNITION, READ_MEDIA_AUDIO/VIDEO,
  SYSTEM_ALERT_WINDOW) and requestLegacyExternalStorage
- rename the Leica sims to LC STREETLIFE CLASSIC/VIVID, drop the brand from
  comments; fix app name text, canvaskit copyright, LICENSE owner
- remove expo-image-picker and expo-sensors (no JS import), delete dead
  exports (computeMatrixTint, cinemaSeasonName, base64 helpers,
  formatCoordinate)
- versionCode 3 / versionName 1.2.1, drop the personal email from About
- add docs/privacy-policy.html for the Play listing

Size: R8 + shrinkResources + bundle compression + ABI trim, 161 MB -> 76 MB.

src/utils/locationUtils.ts

@@ -97,12 +97,3 @@ export async function reverseGeocode(latitude: number, longitude: number): Promi
   return null;
 }
 
-export function formatCoordinate(val: number, type: 'lat' | 'lon'): string {
-  const absolute = Math.abs(val);
-  const degrees = Math.floor(absolute);
-  const minutes = Math.floor((absolute - degrees) * 60);
-  const seconds = ((absolute - degrees - minutes / 60) * 3600).toFixed(2);
-  const direction = type === 'lat' ? (val >= 0 ? 'N' : 'S') : (val >= 0 ? 'E' : 'W');
-  
-  return `${degrees}° ${minutes}' ${seconds}" ${direction}`;
-}