fix(sim): rebuild the six film-sim color matrices to match the stock looks

Provia/Velvia/Astia/Classic Chrome/Classic Neg/Acros each get their own
primaries+cross-talk matrix measured against the pipeline, plus a split-tone
stage (shadow/highlight tint uniforms) for Classic Chrome's teal and Classic
Neg's green-cyan shadows vs warm highlights.

src/components/Viewfinder.tsx

@@ -29,7 +29,7 @@ import {
 import { Lock } from 'lucide-react-native';
 import { Recipe, GPSInfo, FrameId, AspectRatio, ColorAdjustments, ASPECT_RATIO_W_H, CropRatio, CropRect, CROP_W_H, DEFAULT_CROP_RECT, MIN_CROP_FRAC } from '../types';
 import { getSkiaColorMatrix, applyExposureGain } from '../utils/colorUtils';
-import { TONE_SKSL, getToneUniforms } from '../utils/toneShader';
+import { TONE_SKSL, getToneUniforms, toneUniformArray } from '../utils/toneShader';
 import { CINEMA_SKSL, getCinemaUniforms, cinemaOffFlat } from '../utils/cinemaShader';
 import { polaroidLayout, wallframeLayout, WALLFRAME_PNG_W, WALLFRAME_PNG_H } from '../utils/frameUtils';
 import { rotateSkImage90 } from '../utils/skiaImage';
@@ -392,13 +392,12 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
     // eslint-disable-next-line react-hooks/exhaustive-deps
     []
   );
-  // Tone uniforms [dr, hl, sh] for the preview worklet; all-zero = no tone pass.
-  const toneParams = (() => {
-    const u = getToneUniforms(adjustments);
-    return [u.dr, u.hl, u.sh, u.vib];
-  })();
+  // Tone uniforms [dr, hl, sh, vib, shadow split RGB, highlight split RGB] for
+  // the preview worklet; all-zero = no tone pass. A stock may keep the pass on
+  // with every user knob at 0 (Classic Neg split tone, Classic Chrome crush).
+  const toneParams = toneUniformArray(getToneUniforms(adjustments, recipe.baseFilter));
   const toneSync = useMemo(
-    () => createSynchronizable<number[]>([0, 0, 0]),
+    () => createSynchronizable<number[]>(new Array(10).fill(0)),
     // eslint-disable-next-line react-hooks/exhaustive-deps
     []
   );
@@ -820,7 +819,11 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
         }
         const tone = toneSync.getDirty();
         const cinema = cinemaSync.getDirty();
-        const hasTone = toneEffect != null && (tone[0] !== 0 || tone[1] !== 0 || tone[2] !== 0 || tone[3] !== 0);
+        const hasTone =
+          toneEffect != null &&
+          (tone[0] !== 0 || tone[1] !== 0 || tone[2] !== 0 || tone[3] !== 0 ||
+            tone[4] !== 0 || tone[5] !== 0 || tone[6] !== 0 ||
+            tone[7] !== 0 || tone[8] !== 0 || tone[9] !== 0);
         const hasCinema = cinemaEffect != null && cinema[0] > 0;
         // Draws the full frame with the tone/cinema shader when active (drawRect,
         // not drawImage: paint shaders only apply to geometry fills — drawImage
@@ -2135,8 +2138,20 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
   }
 
   // Library mode — fullscreen, full-photo (contain), pinch/double-tap zoom.
-  const toneOn =
-    toneParams[0] !== 0 || toneParams[1] !== 0 || toneParams[2] !== 0 || toneParams[3] !== 0;
+  const toneOn = toneParams.some((v) => v !== 0);
+  // One object for every <Shader> below; keys must match TONE_SKSL's uniforms.
+  const toneUniforms = {
+    dr: toneParams[0],
+    hl: toneParams[1],
+    sh: toneParams[2],
+    vib: toneParams[3],
+    shTr: toneParams[4],
+    shTg: toneParams[5],
+    shTb: toneParams[6],
+    hlTr: toneParams[7],
+    hlTg: toneParams[8],
+    hlTb: toneParams[9],
+  };
   const cinemaOn = cinemaEffect != null && !!cinemaParams;
   const useShaderPass = !!imageFitRect && ((toneEffect != null && toneOn) || cinemaOn);
 
@@ -2164,7 +2179,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                     {toneEffect && toneOn ? (
                       <Shader
                         source={toneEffect}
-                        uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                        uniforms={toneUniforms}
                       >
                         <ImageShader image={skiaImage} fit={polaroidFit} tx="clamp" ty="clamp" rect={winRect} />
                       </Shader>
@@ -2175,7 +2190,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                 ) : toneEffect && toneOn ? (
                   <Shader
                     source={toneEffect}
-                    uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                    uniforms={toneUniforms}
                   >
                     <ImageShader image={skiaImage} fit={polaroidFit} tx="clamp" ty="clamp" rect={winRect} />
                   </Shader>
@@ -2244,7 +2259,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                     {toneEffect && toneOn ? (
                       <Shader
                         source={toneEffect}
-                        uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                        uniforms={toneUniforms}
                       >
                         <ImageShader image={skiaImage} fit="cover" tx="clamp" ty="clamp" rect={winRect} />
                       </Shader>
@@ -2255,7 +2270,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                 ) : toneEffect && toneOn ? (
                   <Shader
                     source={toneEffect}
-                    uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                    uniforms={toneUniforms}
                   >
                     <ImageShader image={skiaImage} fit="cover" tx="clamp" ty="clamp" rect={winRect} />
                   </Shader>
@@ -2321,7 +2336,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                       {toneEffect && toneOn ? (
                         <Shader
                           source={toneEffect}
-                          uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                          uniforms={toneUniforms}
                         >
                           <ImageShader
                             image={skiaImage}
@@ -2344,7 +2359,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
                   ) : toneEffect && toneOn ? (
                     <Shader
                       source={toneEffect}
-                      uniforms={{ dr: toneParams[0], hl: toneParams[1], sh: toneParams[2], vib: toneParams[3] }}
+                      uniforms={toneUniforms}
                     >
                       <ImageShader
                         image={skiaImage}