Fix for issue 903: Crop tool now moves page focus to top after use

src/tests/crop-pdf-page.test.ts

@@ -0,0 +1,18 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { resetState } from '../js/logic/crop-pdf-page.ts';
+
+// Test resetState function for cropping
+describe('resetState', () => {
+  beforeEach(() => {
+    vi.spyOn(window, 'scrollTo').mockImplementation(() => {});
+  });
+
+  it('scrolls the page to the top after resetting', () => {
+    resetState();
+
+    expect(window.scrollTo).toHaveBeenCalledWith({
+      top: 0,
+      behavior: 'smooth',
+    });
+  });
+});