web: add CLASSIC VIVIDIPES, spliced at the blue row

Classic Chrome's blue row, verbatim, with the red and green rows taken from
VELVIPES: skies keep the muted teal/cyan lean while everything that is not
blue reads loud. The shadow crush rides along from FILM_TONE, since it belongs
to the stock rather than to a row. CLASSIC CHRIPES stays untouched beside it.

docker/frontend/shared/utils/colorUtils.ts

@@ -120,6 +120,17 @@ export function getSkiaColorMatrix(baseFilter: BaseFilter, adj: ColorAdjustments
       0.0652, 0.3973, 0.5575, 0, -0.0100,
       0, 0, 0, 1, 0,
     ];
+  } else if (baseFilter === 'classic-vivid') {
+    // Classic Vivid: the Classic Chrome blue row kept verbatim — skies stay the
+    // same muted teal/cyan — with the red and green rows taken from Velvia, so
+    // everything that is not blue reads loud. Two stocks spliced at the blue
+    // row, which is exactly the point: quiet skies over saturated colour.
+    matrix = [
+      1.3895, -0.2540, -0.0256, 0, -0.0550,
+      -0.0772, 1.2355, -0.0261, 0, -0.0661,
+      0.0652, 0.3973, 0.5575, 0, -0.0100,
+      0, 0, 0, 1, 0,
+    ];
   } else if (baseFilter === 'astia') {
     // Astia (Soft): gentler than standard — contrast below neutral (shadows
     // lift, highlights ease off) and colour held back, with a faint warm/pink

docker/frontend/shared/utils/defaultRecipes.ts

@@ -41,6 +41,7 @@ export const FILM_SIMS: FilmSim[] = [
   { id: 'sim-provia', name: 'PROVIPES', baseFilter: 'provia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-velvia', name: 'VELVIPES', baseFilter: 'velvia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-classic-chrome', name: 'CLASSIC CHRIPES', baseFilter: 'classic-chrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-classic-vivid', name: 'CLASSIC VIVIDIPES', baseFilter: 'classic-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-classic-neg', name: 'CLASSIC NEGIPES', baseFilter: 'classic-neg', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-astia', name: 'ASTIPES', baseFilter: 'astia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-eterna', name: 'ETERNIPES', baseFilter: 'eterna', adjustments: { ...DEFAULT_ADJUSTMENTS } },

docker/frontend/shared/utils/toneShader.ts

@@ -207,6 +207,9 @@ export interface ToneUniforms {
 // without also moving the other.
 const FILM_TONE: Partial<Record<BaseFilter, Partial<ToneUniforms>>> = {
   'classic-chrome': { sh: -0.28 },
+  // Classic Vivid is Classic Chrome's sibling — the shadow crush belongs to the
+  // stock, not to the matrix rows, so it comes along.
+  'classic-vivid': { sh: -0.28 },
   'classic-neg': { shT: [-0.018, 0.009, 0.013], hlT: [0.024, 0.008, -0.012] },
   // Acros. A black-and-white stock IS its grey ramp, so this entry only shapes
   // the two ENDS and leaves the middle an identity: a smooth shadow toe that