Backend fixes:
- Add linux-libc-dev and libc6-dev to support psutil compilation on ARM/aarch64
- Update psutil from 6.1.0 to 6.1.1 for better wheel support
Frontend fixes:
- Create missing lib/utils.ts with cn utility function
- Resolves "Module not found: Can't resolve '@/lib/utils'" error
- Uses clsx and tailwind-merge for className merging
These changes ensure successful Docker builds for both services.
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