Add E2E tests for logout, account CRUD, and file operations

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

cypress/support/intercept.js

@@ -43,6 +43,22 @@ export function setupApiIntercepts() {
     body: { success: true },
   }).as('putUser');
 
+  // User detail (GET /api/users/:username)
+  cy.intercept('GET', '/api/users/*', {
+    fixture: 'api/user-detail.json',
+  }).as('getUserDetail');
+
+  // User roles
+  cy.intercept('PUT', '/api/users/*/roles/*', {
+    statusCode: 200,
+    body: { success: true },
+  }).as('putUserRole');
+
+  cy.intercept('DELETE', '/api/users/*/roles/*', {
+    statusCode: 200,
+    body: { success: true },
+  }).as('deleteUserRole');
+
   // Discover (map data)
   cy.intercept('GET', '/api/logs/*/discover', {
     fixture: 'api/discover.json',