feat: route 3D models to generate3d in ModelSearchDialog

Add "3d" capability filter, update handleSelectModel to detect 3D
models and create generate3d nodes with capabilities passed through,
update recent models filter for 3D.

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

src/components/modals/ModelSearchDialog.tsx

@@ -89,7 +89,7 @@ function getPaneCenter() {
 }
 
 // Capability filter options
-type CapabilityFilter = "all" | "image" | "video";
+type CapabilityFilter = "all" | "image" | "video" | "3d";
 
 // API response type
 interface ModelsResponse {
@@ -200,7 +200,9 @@ export function ModelSearchDialog({
         const capabilities =
           capabilityFilter === "image"
             ? "text-to-image,image-to-image"
-            : "text-to-video,image-to-video";
+            : capabilityFilter === "video"
+            ? "text-to-video,image-to-video"
+            : "text-to-3d,image-to-3d";
         params.set("capabilities", capabilities);
       }
       if (bypassCache) {
@@ -315,14 +317,18 @@ export function ModelSearchDialog({
       const isVideoModel = model.capabilities.some(
         (cap) => cap === "text-to-video" || cap === "image-to-video"
       );
+      const is3DModel = model.capabilities.some(
+        (cap) => cap === "text-to-3d" || cap === "image-to-3d"
+      );
 
-      const nodeType = isVideoModel ? "generateVideo" : "nanoBanana";
+      const nodeType = isVideoModel ? "generateVideo" : is3DModel ? "generate3d" : "nanoBanana";
 
       addNode(nodeType, position, {
         selectedModel: {
           provider: model.provider,
           modelId: model.id,
           displayName: model.name,
+          capabilities: model.capabilities,
         },
       });
 
@@ -413,9 +419,13 @@ export function ModelSearchDialog({
         const isVideo = matchingModel.capabilities.some(
           (cap) => cap === "text-to-video" || cap === "image-to-video"
         );
+        const is3D = matchingModel.capabilities.some(
+          (cap) => cap === "text-to-3d" || cap === "image-to-3d"
+        );
 
         if (capabilityFilter === "image") return isImage;
         if (capabilityFilter === "video") return isVideo;
+        if (capabilityFilter === "3d") return is3D;
         return true;
       })
       .slice(0, 4); // Show max 4
@@ -635,6 +645,7 @@ export function ModelSearchDialog({
               <option value="all">All Types</option>
               <option value="image">Image</option>
               <option value="video">Video</option>
+              <option value="3d">3D</option>
             </select>
 
             {/* Refresh Cache */}