Sidebar E2E tests fail because MSW mock environment has AuthPlugin registered → discovery returns auth.enabled: true → AuthGuard redirects to /login → no sidebar in DOM.

Changes

• e2e/helpers/auth.ts — New registerAndLogin(page) helper that signs up a test user via the register form UI and waits for redirect to /home
• e2e/sidebar-text-visibility.spec.ts — Both tests call registerAndLogin() before asserting sidebar state. Removed the redundant page.goto() after auth (full page reload re-initializes MSW handlers, wiping the in-memory session)
• CHANGELOG.md — Documented fix

// Before: navigates to / → redirected to /login → no sidebar
await page.goto(`${CONSOLE_BASE}/`);
await expect(sidebar).toBeVisible(); // ❌ element not found

// After: register via UI → already on /home with active session
await registerAndLogin(page);
await expect(sidebar).toBeVisible({ timeout: SIDEBAR_VISIBLE_TIMEOUT }); // ✅

Key subtlety: MSW auth state lives in module-scope variables (currentSession in authHandlers.ts), so any page.goto() that triggers a full reload re-runs startMockServer() and resets session to null.