Add E2E tests for my-account, account info modal, and compare tab

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

cypress/e2e/filesCompare.cy.js

@@ -0,0 +1,44 @@
+import { loginWithFixtures } from '../support/intercept';
+
+describe('Files Page - COMPARE Tab', () => {
+  beforeEach(() => {
+    loginWithFixtures();
+    cy.visit('/files');
+    cy.wait('@getFiles');
+    // Switch to COMPARE tab
+    cy.contains('li', 'COMPARE').click();
+  });
+
+  it('shows Performance Comparison heading', () => {
+    cy.contains('h2', 'Performance Comparison').should('be.visible');
+  });
+
+  it('shows two drag-and-drop slots', () => {
+    cy.get('#primaryDragCard').should('exist');
+    cy.get('#secondaryDragCard').should('exist');
+  });
+
+  it('drag slots show placeholder text', () => {
+    cy.get('#primaryDragCard').should('contain', 'Drag and drop a file here');
+    cy.get('#secondaryDragCard').should('contain', 'Drag and drop a file here');
+  });
+
+  it('Compare button is disabled when no files are dragged', () => {
+    cy.contains('button', 'Compare').should('be.disabled');
+  });
+
+  it('shows sorting dropdown', () => {
+    cy.get('.p-dropdown').should('exist');
+  });
+
+  it('grid cards display file names', () => {
+    cy.get('#compareGridCards').should('exist');
+    cy.get('#compareGridCards li').should('have.length.greaterThan', 0);
+  });
+
+  it('clicking sorting dropdown shows sort options', () => {
+    cy.get('.p-dropdown').click();
+    cy.get('.p-dropdown-items').should('be.visible');
+    cy.contains('.p-dropdown-item', 'By File Name').should('exist');
+  });
+});