Validated secubox-image.sh and secubox-sysupgrade.sh scripts:
- Fixed curl redirect issue: ASU API returns 301 redirects
- Added -L flag to 9 curl calls across both scripts
- Verified all device profiles valid (mochabin, espressobin, x86-64)
- Confirmed POSIX sh compatibility for sysupgrade script
- Validated first-boot script syntax
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
