fix: hide unsupported vip98k image editors

lib/ai/vip98k-models.ts

@@ -199,6 +199,14 @@ const VERIFIED_2026_IMAGE_MODEL_PATTERNS = [
   /^youchuan\/v8\.1(?:$|[-/])/,
 ];
 
+// These catalog entries currently expose array-shaped request metadata but do
+// not provide reliable multi-reference editing. Keep them out of image pickers
+// until the provider publishes and verifies a real multi-image contract.
+const VIP98K_MULTI_IMAGE_MODEL_EXCLUSIONS = new Set([
+  "nano-banana-2-lite",
+  "nano-banana-fast",
+]);
+
 function toRecord(value: unknown): Record<string, unknown> | null {
   if (!value || typeof value !== "object" || Array.isArray(value)) return null;
   return value as Record<string, unknown>;
@@ -443,6 +451,11 @@ function hasMultiImageReferenceInput(model: Vip98kCatalogModel) {
 }
 
 export function isVip98kMultiImageEditCatalogModel(model: Vip98kCatalogModel) {
+  if (
+    VIP98K_MULTI_IMAGE_MODEL_EXCLUSIONS.has(getModelId(model).toLowerCase())
+  ) {
+    return false;
+  }
   return (
     resolvePresetType(model) === "image" &&
     hasMediaReferenceInput(model, "image") &&

tests/routes/vip98k-reference-routing.test.ts

@@ -527,6 +527,34 @@ test.describe("VIP98K reference-image routing", () => {
     expect(presets).toEqual([]);
   });
 
+  test("excludes Lite and Fast even when catalog metadata claims image arrays", () => {
+    const presets = buildVip98kModelPresets(
+      ["nano-banana-2-lite", "nano-banana-fast"].map((modelId) => ({
+        id: modelId,
+        type: "image",
+        capabilities: ["text_to_image", "image_to_image"],
+        invocation: {
+          kind: "task",
+          method: "POST",
+          path: "/extensions/v1/tasks",
+          content_type: "application/json",
+          request_example: {
+            file_urls: ["https://api.vip98k.com/logo.png"],
+            model: modelId,
+            prompt: "Edit",
+          },
+          input_schema: {
+            properties: {
+              file_urls: { type: "array", maxItems: 8 },
+            },
+          },
+        },
+      })),
+    );
+
+    expect(presets).toEqual([]);
+  });
+
   test("maps frontend ratio and resolution to the VIP98K V2 size contract", () => {
     expect(
       resolveVip98kImageTaskSize({