Fix duplicate input images for generateVideo nodes

The generateVideo node type was missing from imageStorage.ts, causing
input images to be saved as new files on every workflow save instead
of being deduplicated via refs.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/utils/imageStorage.ts

@@ -177,6 +177,36 @@ async function externalizeNodeImages(
       break;
     }
 
+    case "generateVideo": {
+      const d = data as import("@/types").GenerateVideoNodeData;
+      let inputImageRefs = d.inputImageRefs ? [...d.inputImageRefs] : [];
+      const inputImages: string[] = [];
+
+      // Handle input images array (save to inputs)
+      // Skip if corresponding inputImageRef already exists
+      for (let i = 0; i < d.inputImages.length; i++) {
+        const img = d.inputImages[i];
+        const existingRef = d.inputImageRefs?.[i];
+        if (existingRef && isBase64DataUrl(img)) {
+          inputImages.push(""); // Already has ref, just clear the base64
+        } else if (isBase64DataUrl(img)) {
+          const ref = await saveImageAndGetId(img, workflowPath, savedImageIds, "inputs");
+          inputImageRefs[i] = ref;
+          inputImages.push(""); // Empty placeholder
+        } else {
+          inputImages.push(img);
+        }
+      }
+
+      // Note: outputVideo is a video URL, not saved as an image
+      newData = {
+        ...d,
+        inputImages: inputImages.length > 0 && inputImages.every(i => i === "") ? [] : inputImages,
+        inputImageRefs: inputImageRefs.length > 0 ? inputImageRefs : undefined,
+      };
+      break;
+    }
+
     case "output": {
       const d = data as import("@/types").OutputNodeData;
       // Output displays generated content, save to generations
@@ -374,6 +404,27 @@ async function hydrateNodeImages(
       break;
     }
 
+    case "generateVideo": {
+      const d = data as import("@/types").GenerateVideoNodeData;
+      const inputImages = [...d.inputImages];
+
+      // Hydrate input images from refs
+      if (d.inputImageRefs && d.inputImageRefs.length > 0) {
+        for (let i = 0; i < d.inputImageRefs.length; i++) {
+          const ref = d.inputImageRefs[i];
+          if (ref) {
+            inputImages[i] = await loadImageById(ref, workflowPath, loadedImages, "inputs");
+          }
+        }
+      }
+
+      newData = {
+        ...d,
+        inputImages,
+      };
+      break;
+    }
+
     case "output": {
       const d = data as import("@/types").OutputNodeData;
       if (d.imageRef && !d.image) {