Backend fixes:
- Updated psutil from 5.9.8 to 6.1.0 for better ARM64 support and pre-built wheels
Frontend fixes:
- Created missing lib/api/client.ts with axios API client
- Created missing lib/hooks/useStats.ts with system statistics hooks
- Created missing lib/hooks/useBots.ts with bot management hooks
- Fixed .gitignore to not ignore frontend/lib/ directory
These changes resolve the build errors:
- Backend: psutil compilation failure on aarch64
- Frontend: Missing module @/lib/hooks/useStats
