## Fix Applied: Mobile Menu Button ### Problem The mobile hamburger menu button was outside the viewport and could not be clicked, blocking mobile navigation. ### Root Cause The sidebar component has z-50 and is positioned fixed inset-y-0 left-0. Even when translated off-screen with -translate-x-full, the element was still intercepting pointer events, preventing clicks on the header menu button (which has lower z-30). ### Fix Added pointer-events-none when sidebar is closed on mobile, with lg:pointer-events-auto to preserve desktop behavior: File: frontend/src/components/layout/sidebar.tsx:62 ### Verification - 83/83 unit tests passing - Build successful (all 4 routes generated) - Playwright test confirms menu button clickable at (16, 13.5) in 375x667 viewport - Sidebar opens and navigation works correctly

[QA] PARTIAL PASS - Mobile menu button interaction blocked ## Summary Desktop navigation works perfectly. All 4 pages render correctly. However, mobile menu button cannot be clicked due to viewport positioning issue. ## Passed (14/15 tests): - ✅ All 4 pages load and render correctly - ✅ Desktop sidebar navigation functional - ✅ Header with system status indicator working - ✅ Mobile sidebar collapses correctly - ✅ 83/83 unit tests passing ## Failed (1/15 tests): - ❌ Mobile menu button (hamburger) cannot be clicked - Error: Element is outside of viewport - Impact: Users cannot open mobile sidebar ## Recommendation Fix mobile menu button positioning before marking as complete. Likely a CSS z-index or positioning issue in the header component on mobile viewports. Full report: /tmp/qa-APC-14.md Screenshots: /tmp/apc14_*.png

## Implementation Complete ### Changes Made 1. **Sidebar Navigation** (frontend/src/components/layout/sidebar.tsx) - Added navigation links: Dashboard (/), Rack View (/rack), Outlets (/outlets), Settings (/settings) - Active page highlighting with primary color background - Brand/logo with app name - Mobile-responsive with overlay and close button - Smooth slide-in/slide-out animation 2. **Header** (frontend/src/components/layout/header.tsx) - System status indicator showing: Connected (green), Disconnected (red), Checking (yellow) - Real-time power stats (Voltage, Current, Power) when connected - Mobile menu button to toggle sidebar - Auto-refresh every 30 seconds - Manual refresh button 3. **App Layout** (frontend/src/components/layout/app-layout.tsx) - Wrapper component integrating sidebar and header - Manages sidebar open/close state - Responsive layout with sticky header 4. **Pages Created** - / - Dashboard with device info, rack diagram, and outlet overview - /rack - Rack View with diagram and device cards - /outlets - Full outlet grid for power management - /settings - Device info and power stats cards ### Tests Added - Sidebar tests: 9 tests covering navigation, active state, open/close behavior - Header tests: 8 tests covering status indicator, power info, refresh functionality - Total: 83 tests passing ### Verification - npm run build - Successful (all 4 routes generated) - npm run test - 83 tests passing (7 test files) ### Mobile Responsiveness - Sidebar collapses off-screen on mobile (< lg breakpoint) - Menu button in header opens sidebar with overlay - Click overlay or X button to close - Power stats hidden on small screens Ready for QA verification.