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/AdjustmentPanel.tsx

@@ -168,6 +168,7 @@ interface ParamDef {
   step: number;
   display: (v: number) => string;
   onChange: (v: number) => void;
+  pro?: boolean; // PRO-only: the LITE build cannot open this row
 }
 
 const haptic = () => Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Light);
@@ -420,6 +421,10 @@ export default function AdjustmentPanel({
       label: `${p.label.toUpperCase()} ${p.display(p.value)}`,
       active: openParam === p.key,
       amberValue: openParam !== p.key && p.value !== p.default,
+      // A PRO-only parameter stays visible in LITE as a greyed chip with its
+      // corner PRO tag — named where it is, which is the only place it can be.
+      pro: p.pro,
+      disabled: !!p.pro && !IS_PRO,
       onPress: () => toggleParam(p.key),
     }));
 
@@ -465,6 +470,7 @@ export default function AdjustmentPanel({
       label: d.label,
       value: d.get(a),
       default: d.defaultValue,
+      pro: d.pro,
       min: d.min,
       max: d.max,
       step: d.step,

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;

src/components/PhotoViewerModal.tsx

@@ -72,13 +72,13 @@ export default function PhotoViewerModal({
       if (await Sharing.isAvailableAsync()) {
         await Sharing.shareAsync(photo.uri, {
           mimeType: 'image/jpeg',
-          dialogTitle: `Share with CamRecipe Pro - Preset: ${photo.recipeName}`,
+          dialogTitle: `Share with RecipesCam - Preset: ${photo.recipeName}`,
           UTI: 'public.jpeg',
         });
       } else {
         await Share.share({
           url: photo.uri,
-          message: `Captured with CamRecipe Pro - Preset: ${photo.recipeName}`,
+          message: `Captured with RecipesCam - Preset: ${photo.recipeName}`,
         });
       }
     } catch (error) {

src/components/RecipeCreateModal.tsx

@@ -343,7 +343,7 @@ export default function RecipeCreateModal({
               value={name}
               onChangeText={setName}
               selectTextOnFocus
-              placeholder="Recipe name (e.g. Fuji Retro)"
+              placeholder="Recipe name (e.g. Retro Film)"
               placeholderTextColor="#71717a"
               className="bg-carbon border border-zinc-800 rounded-lg p-2 text-white font-mono text-sm mb-2"
             />

src/components/TopBar.tsx

@@ -115,7 +115,7 @@ export default function TopBar({ mode, recipeName, onSaveRecipe, onOverwriteReci
             <TextInput
               value={newRecipeName}
               onChangeText={setNewRecipeName}
-              placeholder="Recipe name (e.g. Fuji Retro)"
+              placeholder="Recipe name (e.g. Retro Film)"
               placeholderTextColor="#71717a"
               className="bg-carbon border border-zinc-800 rounded-lg p-3 text-white font-mono text-sm mb-4"
               autoFocus

src/components/Viewfinder.tsx

@@ -2797,7 +2797,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
   const cinemaOn = cinemaEffect != null && !!cinemaParams;
   const useShaderPass = !!imageFitRect && ((toneEffect != null && toneOn) || cinemaOn);
 
-  // ---- CLARITY + LIGHT GLOW on the LIBRARY preview -----------------------
+  // ---- CLARITY + HDF EFFECT on the LIBRARY preview -----------------------
   // The camera worklet and exportEngine both have these two passes; the three
   // library branches below draw the photo declaratively and had neither, so a
   // photo opened from the library ignored both knobs. Same maths as the camera:

src/utils/cinemaShader.ts

@@ -118,10 +118,6 @@ const KEYS = [
   'fogR', 'fogG', 'fogB', 'fogAmt',
 ] as const;
 
-export function cinemaSeasonName(season: CinemaSeason | null | undefined): string | null {
-  return season ? SEASONS[season]?.name ?? null : null;
-}
-
 export function getCinemaUniforms(season: CinemaSeason | null | undefined): CinemaUniformSet | null {
   if (!season) return null;
   const s = SEASONS[season];

src/utils/colorUtils.ts

@@ -139,8 +139,8 @@ export function getSkiaColorMatrix(baseFilter: BaseFilter, adj: ColorAdjustments
       0, 0, 0, 1, 0,
     ];
   } else if (baseFilter === 'leica') {
-    // LEITZ STREETLIFE CLASSIC — the Leica character rather than a saturation
-    // push. What makes a Leica file read as one is the separation BETWEEN the
+    // LC STREETLIFE CLASSIC — the rangefinder character rather than a saturation
+    // push. What makes this file read as one is the separation BETWEEN the
     // hues, so the deepening lives in the off-diagonal terms, not in a global
     // chroma gain:
     //   - the three rows sum to 1.00/1.00/0.995, so greys stay exactly grey and
@@ -158,7 +158,7 @@ export function getSkiaColorMatrix(baseFilter: BaseFilter, adj: ColorAdjustments
       0, 0, 0, 1, 0,
     ];
   } else if (baseFilter === 'leica-vivid') {
-    // LEITZ STREETLIFE VIVID — the same Leica channel separation pushed into the
+    // LC STREETLIFE VIVID — the same slanted channel separation pushed into the
     // digital era: ~20% of chroma gain (still well under Velvia's 39%, so it
     // sparkles instead of shouting) on the same warm R>G>B bias CLASSIC has, so
     // VIVID is a brighter read of one look rather than a second, neutral one.
@@ -285,26 +285,6 @@ export function applyExposureGain(matrix: number[], evStops: number): number[] {
   return multiplyMatrices(gainMat, matrix);
 }
 
-// Compute a tint color + opacity from the matrix for camera overlay preview
-// Applies the matrix to white (1,1,1,1) to see what color cast the filter creates
-export function computeMatrixTint(matrix: number[]): { r: number; g: number; b: number; a: number } {
-  const apply = (r: number, g: number, b: number, a: number) => {
-    const row = (offset: number) =>
-      matrix[offset + 0] * r + matrix[offset + 1] * g + matrix[offset + 2] * b + matrix[offset + 3] * a + matrix[offset + 4];
-    return { r: row(0), g: row(5), b: row(10), a: row(15) };
-  };
-
-  // Apply matrix to neutral white to get the filter's color cast
-  const white = apply(1, 1, 1, 1);
-  // Clamp and compute perceived intensity to determine opacity
-  const clamp = (v: number) => Math.max(0, Math.min(1, v));
-  const intensity = (white.r + white.g + white.b) / 3;
-  // Opacity is higher when the filter deviates from neutral
-  const deviation = Math.abs(white.r - intensity) + Math.abs(white.g - intensity) + Math.abs(white.b - intensity);
-  const opacity = Math.min(0.35, deviation * 2.5);
-  return { r: clamp(white.r), g: clamp(white.g), b: clamp(white.b), a: opacity };
-}
-
 // 4x5 Matrix multiplication utility: A * B
 function multiplyMatrices(a: number[], b: number[]): number[] {
   const result = new Array(20).fill(0);

src/utils/credits.ts

@@ -21,7 +21,7 @@ export const CREDITS: CreditEntry[] = [
     name: "canvaskit-wasm",
     version: "0.41.0",
     license: "BSD-3-Clause",
-    copyright: "Copyright 2020 Google LLC",
+    copyright: "Copyright (c) 2011 Google Inc. All rights reserved.",
     url: "https://skia.org/",
   },
   {
@@ -87,6 +87,13 @@ export const CREDITS: CreditEntry[] = [
     copyright: "Copyright (c) 2015-present 650 Industries, Inc. (aka Expo)",
     url: "https://docs.expo.dev/versions/latest/sdk/font/",
   },
+  {
+    name: "expo-document-picker",
+    version: "57.0.2",
+    license: "MIT",
+    copyright: "Copyright (c) 2015-present 650 Industries, Inc. (aka Expo)",
+    url: "https://docs.expo.dev/versions/latest/sdk/document-picker/",
+  },
   {
     name: "expo-haptics",
     version: "57.0.1",
@@ -94,13 +101,6 @@ export const CREDITS: CreditEntry[] = [
     copyright: "Copyright (c) 2015-present 650 Industries, Inc. (aka Expo)",
     url: "https://docs.expo.dev/versions/latest/sdk/haptics/",
   },
-  {
-    name: "expo-image-picker",
-    version: "57.0.4",
-    license: "MIT",
-    copyright: "Copyright (c) 2015-present 650 Industries, Inc. (aka Expo)",
-    url: "https://docs.expo.dev/versions/latest/sdk/imagepicker/",
-  },
   {
     name: "expo-keep-awake",
     version: "57.0.1",

src/utils/defaultRecipes.ts

@@ -44,19 +44,19 @@ export const FILM_SIMS: FilmSim[] = [
   { id: 'sim-astia', name: 'ASTIPES', baseFilter: 'astia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-eterna', name: 'ETERNIPES', baseFilter: 'eterna', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-acros', name: 'ACRIPES', baseFilter: 'monochrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  // Leica digital look (M/Q/SL) is not a film stock, so it ships as its own
+  // The rangefinder digital look (M/Q/SL) is not a film stock, so it ships as its own
   // pair instead of one look that has to compromise:
   //   CLASSIC — the stock character: deep solid darks, natural shadows, rich but
   //     quiet colour. Its micro-contrast is CLARITY (a local unsharp mask in both
   //     renderers), never a global saturation boost, and a whisker of grain
   //     keeps it feeling like film rather than digital sharpness.
-  //   VIVID — the same Leica separation opened up for the digital era: lifted
+  //   VIVID — the same channel separation opened up for the digital era: lifted
   //     exposure, lifted shadows, a little colour. It reads bright and flattering
   //     straight off the shutter, no editing pass needed.
   // Both share the 'leica'/'leica-vivid' matrices; the tonal half is the sim's
   // own adjustments, which every apply path now carries into the panel.
-  { id: 'sim-leica', name: 'LEITZ STREETLIFE CLASSIC', baseFilter: 'leica', adjustments: { ...DEFAULT_ADJUSTMENTS, clarity: 2, grain: 1 } },
-  { id: 'sim-leica-vivid', name: 'LEITZ STREETLIFE VIVID', baseFilter: 'leica-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS, exposure: 2, saturation: 2, clarity: 2, shadow: 1, highlight: -1 } },
+  { id: 'sim-leica', name: 'LC STREETLIFE CLASSIC', baseFilter: 'leica', adjustments: { ...DEFAULT_ADJUSTMENTS, clarity: 2, grain: 1 } },
+  { id: 'sim-leica-vivid', name: 'LC STREETLIFE VIVID', baseFilter: 'leica-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS, exposure: 2, saturation: 2, clarity: 2, shadow: 1, highlight: -1 } },
 ];
 
 // Film sim → full Recipe (never persisted; sims are applied on the fly).

src/utils/entitlement.ts

@@ -16,9 +16,10 @@ export const IS_PRO = IS_PRO_BUILD;
 //
 // What LITE owns outright: the eight film sims, the bundled recipes, its own
 // recipes up to LITE_RECIPE_LIMIT, its own watermark text (in one face), the
-// plain frames, one favorite and every parameter. What needs PRO: the three
-// printed frames, the GPS stamp, the platform's other fonts, the next recipe
-// past the limit, and the second favorite.
+// plain frames, one favorite and every parameter except the HDF effect.
+// What needs PRO: the three printed frames, the GPS stamp, the HDF effect,
+// the platform's other fonts, the next recipe past the limit, and the second
+// favorite.
 
 // Frames on the LITE side: the plain export only. The three printed looks are
 // PRO (the artwork/card geometry is the paid half of the FRAME tab).
@@ -47,6 +48,7 @@ export const LITE_MARK = {
 export interface Look {
   frame: FrameId;
   gpsWm: boolean;
+  hdf: number;
 }
 
 // The first PRO feature a look is using, or null when it is LITE-clean. One
@@ -54,5 +56,9 @@ export interface Look {
 export function proLookInUse(look: Look): string | null {
   if (PRO_FRAMES.includes(look.frame)) return 'A PRO frame';
   if (look.gpsWm) return 'The GPS watermark';
+  // A LITE build can no longer reach the HDF row (paramDefs marks it PRO and
+  // the panel greys the chip out), but a session or recipe stored before the
+  // gate existed still carries a value: it is caught here, at the render.
+  if (look.hdf > 0) return 'The HDF effect';
   return null;
 }

src/utils/jpegDpi.ts

@@ -8,41 +8,6 @@
 // If the JPEG carries neither JFIF nor EXIF, a minimal JFIF APP0 segment is
 // inserted right after SOI.
 
-const B64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
-
-export function base64ToBytes(b64: string): Uint8Array {
-  const clean = b64.replace(/\s+/g, '');
-  const out: number[] = [];
-  let buffer = 0;
-  let bits = 0;
-  for (const ch of clean) {
-    if (ch === '=') break;
-    const v = B64.indexOf(ch);
-    if (v < 0) continue;
-    buffer = (buffer << 6) | v;
-    bits += 6;
-    if (bits >= 8) {
-      bits -= 8;
-      out.push((buffer >> bits) & 0xff);
-    }
-  }
-  return Uint8Array.from(out);
-}
-
-export function bytesToBase64(bytes: Uint8Array): string {
-  let out = '';
-  for (let i = 0; i < bytes.length; i += 3) {
-    const b0 = bytes[i];
-    const b1 = i + 1 < bytes.length ? bytes[i + 1] : 0;
-    const b2 = i + 2 < bytes.length ? bytes[i + 2] : 0;
-    out += B64[b0 >> 2];
-    out += B64[((b0 & 3) << 4) | (b1 >> 4)];
-    out += i + 1 < bytes.length ? B64[((b1 & 15) << 2) | (b2 >> 6)] : '=';
-    out += i + 2 < bytes.length ? B64[b2 & 63] : '=';
-  }
-  return out;
-}
-
 function u16(bytes: Uint8Array, p: number): number {
   return (bytes[p] << 8) | bytes[p + 1];
 }

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}`;
-}

src/utils/paramDefs.ts

@@ -14,6 +14,9 @@ export interface ContinuousParamDef {
   display: (v: number) => string;
   get: (a: ColorAdjustments) => number;
   set: (v: number) => Partial<ColorAdjustments>;
+  // PRO-only knob: the LITE build greys the chip out (PRO corner tag) and
+  // cannot open its row, so the value stays at its default there.
+  pro?: boolean;
 }
 
 const sign = (v: number) => (v > 0 ? `+${v}` : String(v));
@@ -174,7 +177,8 @@ export const PARAM_DEFS: {
     },
     {
       key: 'hdf',
-      label: 'LIGHT GLOW',
+      label: 'HDF EFFECT',
+      pro: true,
       min: 0,
       max: 10,
       step: 1,

src/utils/toneShader.ts

@@ -106,7 +106,7 @@ vec4 main(vec2 xy) {
 }
 `;
 
-// Bright Pass Filter for the LIGHT GLOW pass (HDF), SkSL over a child image
+// Bright Pass Filter for the HDF EFFECT pass (HDF), SkSL over a child image
 // shader — the pattern TONE_SKSL above already proved on device.
 //
 // Per channel the old 2.5*in-1.5 curve only zeroed a channel that was dark