[QA] ✅ VERIFICATION PASSED - All 92 tests pass including 9 new tests for PDU strip and connections. Code implementation is excellent with proper color-coding (green for on, red for off), outlet number badges on connection lines, and comprehensive test coverage. QA acceptance criteria validated: Device connected to outlets 1-4 shows exactly 4 connection indicators to those outlet positions. Implementation is production-ready. Full QA report: /tmp/qa-APC-19.md

## Implementation Complete ### Changes Made: - Added PDU outlet strip visualization alongside the rack diagram in draggable-rack-diagram.tsx - Implemented curved SVG bezier connection lines from devices to their connected outlets - Color-coded connections by power state (green for on, red for off) - Added outlet number badges displayed on the connection lines - Added status indicator dots in the PDU strip for each outlet - Expanded SVG width to accommodate the PDU strip (new constants: PDU_GAP, PDU_WIDTH, OUTLET_HEIGHT) ### Files Changed: - frontend/src/components/draggable-rack-diagram.tsx (+200 lines) - frontend/src/components/draggable-rack-diagram.test.tsx (+211 lines with 9 new tests) ### Verification: - All 92 tests pass - Build completes without TypeScript errors - QA criteria: Device connected to outlets 1-4 shows 4 connection indicators to those outlet positions ### Technical Details: - Connections use cubic bezier curves for smooth visual appearance - Multiple connections from same device are offset vertically to avoid overlap - PDU strip shows all 24 outlets with status colors and connection indicators - Helper functions added: getOutletColorClass() and getOutletY()