fix(image-pipeline): make preview histogram opt-in

components/canvas/nodes/adjustment-preview.tsx

@@ -111,6 +111,7 @@ export default function AdjustmentPreview({
       sourceUrl,
       steps,
       nodeWidth,
+      includeHistogram: true,
       // Die Vorschau muss in-Node gut lesbar bleiben, aber nicht in voller
       // Display-Auflösung rechnen.
       previewScale: 0.5,

components/canvas/nodes/compare-surface.tsx

@@ -31,6 +31,7 @@ export default function CompareSurface({
     sourceUrl: previewSourceUrl,
     steps: previewSteps,
     nodeWidth,
+    includeHistogram: false,
     // Compare-Nodes zeigen nur eine kompakte Live-Ansicht; kleinere Kacheln
     // halten lange Workflows spürbar reaktionsfreudiger.
     previewScale: 0.5,

components/canvas/nodes/render-node.tsx

@@ -614,6 +614,7 @@ export default function RenderNode({ id, data, selected, width, height }: NodePr
     sourceUrl: isFullscreenOpen && sourceUrl ? sourceUrl : null,
     steps,
     nodeWidth: fullscreenPreviewWidth,
+    includeHistogram: false,
     previewScale: 0.85,
     maxPreviewWidth: 1920,
     maxDevicePixelRatio: 1.5,