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/components/CreditsModal.tsx

@@ -8,8 +8,8 @@ import { CREDITS, LICENSE_TEXTS, CreditEntry } from '../utils/credits';
 // each project row links to its homepage, each license group expands to the
 // full license text embedded in the app.
 
-const APP_NAME = 'recipescamera';
-const APP_VERSION = '1.2'; // keep in sync with app.json
+const APP_NAME = 'RecipesCam';
+const APP_VERSION = '1.2.1'; // keep in sync with app.json
 
 function Group({
   license,
@@ -134,16 +134,6 @@ export default function CreditsModal({
             </Text>
             <View className="flex-row flex-wrap items-center mt-1">
               <Text className="text-zinc-400 font-mono text-[10px]">Author: Lộc Phạm</Text>
-              <TouchableOpacity
-                onPress={() => Linking.openURL('mailto:tranloclqd@gmail.com')}
-                accessibilityLabel="Email author"
-                className="flex-row items-center ml-3"
-                hitSlop={{ top: 6, bottom: 6, left: 6, right: 6 }}
-              >
-                <Text className="text-amber-500/90 font-mono text-[10px] underline">
-                  tranloclqd@gmail.com
-                </Text>
-              </TouchableOpacity>
             </View>
             <Text className="text-zinc-600 font-mono text-[10px] mt-1">
               © 2026 Lộc Phạm · Built with React Native + Expo; icons by Lucide;