feat(15-01): add external link icon to generate node headers

- Create shared getModelPageUrl utility in src/utils/providerUrls.ts
- Add external-link icon to GenerateImageNode header (before Browse button)
- Add external-link icon to GenerateVideoNode header (before Browse button)
- Add external-link icon to Generate3DNode header (before Browse button)
- Icon only appears when model is selected and provider has a page URL
- Gemini models show no link (returns null); Replicate/fal/Kie/WaveSpeed show links

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/nodes/Generate3DNode.tsx

@@ -11,6 +11,7 @@ import { ProviderModel, ModelCapability } from "@/lib/providers/types";
 import { ModelSearchDialog } from "@/components/modals/ModelSearchDialog";
 import { useToast } from "@/components/Toast";
 import { ProviderBadge } from "./ProviderBadge";
+import { getModelPageUrl, getProviderDisplayName } from "@/utils/providerUrls";
 
 // 3D generation capabilities
 const THREE_D_CAPABILITIES: ModelCapability[] = ["text-to-3d", "image-to-3d"];
@@ -92,15 +93,37 @@ export function Generate3DNode({ id, data, selected }: NodeProps<Generate3DNodeT
     <ProviderBadge provider={currentProvider} />
   ), [currentProvider]);
 
-  // Header action element - browse button
+  // Compute model page URL for external link
+  const modelPageUrl = useMemo(() => {
+    if (!nodeData.selectedModel?.modelId) return null;
+    return getModelPageUrl(currentProvider, nodeData.selectedModel.modelId);
+  }, [currentProvider, nodeData.selectedModel?.modelId]);
+
+  // Header action element - external link + browse button
   const headerAction = useMemo(() => (
-    <button
+    <>
-      onClick={() => setIsBrowseDialogOpen(true)}
+      {modelPageUrl && nodeData.selectedModel?.modelId && (
-      className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
+        <a
-    >
+          href={modelPageUrl}
-      Browse
+          target="_blank"
-    </button>
+          rel="noopener noreferrer"
-  ), []);
+          onClick={(e) => e.stopPropagation()}
+          className="nodrag nopan text-neutral-500 hover:text-neutral-300 transition-colors"
+          title={`View on ${getProviderDisplayName(currentProvider)}`}
+        >
+          <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
+          </svg>
+        </a>
+      )}
+      <button
+        onClick={() => setIsBrowseDialogOpen(true)}
+        className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
+      >
+        Browse
+      </button>
+    </>
+  ), [modelPageUrl, nodeData.selectedModel?.modelId, currentProvider]);
 
   // Track previous status to detect error transitions
   const prevStatusRef = useRef(nodeData.status);

src/components/nodes/GenerateImageNode.tsx

@@ -13,6 +13,7 @@ import { ModelSearchDialog } from "@/components/modals/ModelSearchDialog";
 import { useToast } from "@/components/Toast";
 import { getImageDimensions, calculateNodeSizePreservingHeight } from "@/utils/nodeDimensions";
 import { ProviderBadge } from "./ProviderBadge";
+import { getModelPageUrl, getProviderDisplayName } from "@/utils/providerUrls";
 
 // Base 10 aspect ratios (all Gemini image models)
 const BASE_ASPECT_RATIOS: AspectRatio[] = ["1:1", "2:3", "3:2", "3:4", "4:3", "4:5", "5:4", "9:16", "16:9", "21:9"];
@@ -389,21 +390,44 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
     <ProviderBadge provider={currentProvider} />
   ), [currentProvider]);
 
+  // Compute model page URL for external link
+  const modelPageUrl = useMemo(() => {
+    if (!nodeData.selectedModel?.modelId) return null;
+    return getModelPageUrl(currentProvider, nodeData.selectedModel.modelId);
+  }, [currentProvider, nodeData.selectedModel?.modelId]);
+
   // Header action element based on provider mode
   const headerAction = useMemo(() => {
+    const linkIcon = modelPageUrl && nodeData.selectedModel?.modelId ? (
+      <a
+        href={modelPageUrl}
+        target="_blank"
+        rel="noopener noreferrer"
+        onClick={(e) => e.stopPropagation()}
+        className="nodrag nopan text-neutral-500 hover:text-neutral-300 transition-colors"
+        title={`View on ${getProviderDisplayName(currentProvider)}`}
+      >
+        <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
+        </svg>
+      </a>
+    ) : null;
+
     if (!isGeminiOnly) {
-      // External providers: browse button
       return (
-        <button
+        <>
-          onClick={() => setIsBrowseDialogOpen(true)}
+          {linkIcon}
-          className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
+          <button
-        >
+            onClick={() => setIsBrowseDialogOpen(true)}
-          Browse
+            className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
-        </button>
+          >
+            Browse
+          </button>
+        </>
       );
     }
-    return null;
+    return linkIcon;
-  }, [isGeminiOnly]);
+  }, [isGeminiOnly, modelPageUrl, nodeData.selectedModel?.modelId, currentProvider]);
   // Use selectedModel.modelId for Gemini models, fallback to legacy model field
   const currentModelId = isGeminiProvider ? (nodeData.selectedModel?.modelId || nodeData.model) : null;
   const supportsResolution = currentModelId === "nano-banana-pro" || currentModelId === "nano-banana-2";

src/components/nodes/GenerateVideoNode.tsx

@@ -14,6 +14,7 @@ import { useToast } from "@/components/Toast";
 import { getVideoDimensions, calculateNodeSizePreservingHeight } from "@/utils/nodeDimensions";
 import { ProviderBadge } from "./ProviderBadge";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { getModelPageUrl, getProviderDisplayName } from "@/utils/providerUrls";
 
 // Video generation capabilities
 const VIDEO_CAPABILITIES: ModelCapability[] = ["text-to-video", "image-to-video"];
@@ -329,15 +330,37 @@ export function GenerateVideoNode({ id, data, selected }: NodeProps<GenerateVide
     <ProviderBadge provider={currentProvider} />
   ), [currentProvider]);
 
-  // Header action element - browse button
+  // Compute model page URL for external link
+  const modelPageUrl = useMemo(() => {
+    if (!nodeData.selectedModel?.modelId) return null;
+    return getModelPageUrl(currentProvider, nodeData.selectedModel.modelId);
+  }, [currentProvider, nodeData.selectedModel?.modelId]);
+
+  // Header action element - external link + browse button
   const headerAction = useMemo(() => (
-    <button
+    <>
-      onClick={() => setIsBrowseDialogOpen(true)}
+      {modelPageUrl && nodeData.selectedModel?.modelId && (
-      className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
+        <a
-    >
+          href={modelPageUrl}
-      Browse
+          target="_blank"
-    </button>
+          rel="noopener noreferrer"
-  ), []);
+          onClick={(e) => e.stopPropagation()}
+          className="nodrag nopan text-neutral-500 hover:text-neutral-300 transition-colors"
+          title={`View on ${getProviderDisplayName(currentProvider)}`}
+        >
+          <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
+          </svg>
+        </a>
+      )}
+      <button
+        onClick={() => setIsBrowseDialogOpen(true)}
+        className="nodrag nopan text-[10px] py-0.5 px-1.5 bg-neutral-700 hover:bg-neutral-600 border border-neutral-600 rounded text-neutral-300 transition-colors"
+      >
+        Browse
+      </button>
+    </>
+  ), [modelPageUrl, nodeData.selectedModel?.modelId, currentProvider]);
 
   const hasCarouselVideos = (nodeData.videoHistory || []).length > 1;
 

src/utils/providerUrls.ts

@@ -0,0 +1,47 @@
+import { ProviderType } from "@/types";
+
+/**
+ * Get the URL to a model's page on its provider's website.
+ * Returns null for providers without model pages (e.g., Gemini).
+ */
+export function getModelPageUrl(
+  provider: ProviderType,
+  modelId: string,
+  pageUrl?: string
+): string | null {
+  if (pageUrl) return pageUrl;
+  switch (provider) {
+    case "replicate": {
+      const baseModelId = modelId.split(":")[0];
+      return `https://replicate.com/${baseModelId}`;
+    }
+    case "fal":
+      return `https://fal.ai/models/${modelId}`;
+    case "kie":
+      return `https://docs.kie.ai/`;
+    case "wavespeed":
+      return `https://wavespeed.ai`;
+    default:
+      return null;
+  }
+}
+
+/**
+ * Get the display name for a provider.
+ */
+export function getProviderDisplayName(provider: ProviderType): string {
+  switch (provider) {
+    case "gemini":
+      return "Gemini";
+    case "replicate":
+      return "Replicate";
+    case "fal":
+      return "fal.ai";
+    case "kie":
+      return "Kie.ai";
+    case "wavespeed":
+      return "WaveSpeed";
+    default:
+      return provider;
+  }
+}