fix: classify reference image models correctly

lib/ai/model-classification.ts

@@ -48,7 +48,6 @@ const VIDEO_MODE_KEYS = new Set([
   "text-to-video",
   "first-frame",
   "first-last-frame",
-  "reference-images",
 ]);
 
 const TEXT_TO_IMAGE_MODE_KEYS = new Set([

playwright.helpers.config.ts

@@ -11,6 +11,7 @@ export default defineConfig({
     /routes\/canvas-entry-performance\.test\.ts/,
     /routes\/settings-visual-consistency\.test\.ts/,
     /routes\/canvas-scale-adjust-intent\.test\.ts/,
+    /routes\/model-classification\.test\.ts/,
   ],
   fullyParallel: true,
   forbidOnly: !!process.env.CI,

tests/routes/model-classification.test.ts

@@ -0,0 +1,35 @@
+import { expect, test } from "@playwright/test";
+import {
+  isImageGenerationModelDescriptor,
+  isVideoModelDescriptor,
+} from "@/lib/ai/model-classification";
+
+test.describe("model classification", () => {
+  test("keeps multi-reference BananaImage models classified as image models", () => {
+    const descriptor = {
+      providerType: "bananaimage",
+      modelId: "gemini-3-pro-image-preview",
+      capabilities: {
+        supportedModes: [
+          "text-to-image",
+          "image-to-image",
+          "reference-images",
+        ],
+      },
+      supportsImageGen: true,
+    };
+
+    expect(isVideoModelDescriptor(descriptor)).toBe(false);
+    expect(isImageGenerationModelDescriptor(descriptor)).toBe(true);
+  });
+
+  test("still recognizes explicit video generation modes", () => {
+    expect(
+      isVideoModelDescriptor({
+        providerType: "custom",
+        modelId: "custom-video-model",
+        capabilities: { supportedModes: ["text-to-video"] },
+      })
+    ).toBe(true);
+  });
+});