fixed frontent test errors

frontend/vue-app/src/test/setup.ts

@@ -0,0 +1,20 @@
+import { vi } from 'vitest'
+
+// jsdom does not implement scrollTo — stub it to suppress "Not implemented" warnings
+window.scrollTo = vi.fn()
+
+// jsdom does not support navigation — stub window.location to suppress
+// "Not implemented: navigation to another Document" warnings
+Object.defineProperty(window, 'location', {
+  value: { href: '', pathname: '/', assign: vi.fn(), replace: vi.fn(), reload: vi.fn() },
+  writable: true,
+})
+
+// Globally mock imageCache so component tests don't make real fetch calls
+// and don't spam "response.blob is not a function" errors in jsdom.
+vi.mock('@/common/imageCache', () => ({
+  getCachedImageUrl: vi.fn().mockResolvedValue(''),
+  getCachedImageBlob: vi.fn().mockResolvedValue(new Blob()),
+  revokeImageUrl: vi.fn(),
+  revokeAllImageUrls: vi.fn(),
+}))