fix(cli): recompute compose flags from restored config during rollback

[patil2001]

Summary

ods gpu reassign base64-encoded the assignment JSON with wrapping disabled only on Linux; outside Linux (Git Bash/Cygwin), GNU base64 wraps at 76 columns, so multi-KB assignments were written into .env as a first chunk plus orphan continuation lines — decoding failed afterwards and the file was structurally polluted. The non-Linux branch now strips the wraps, mirroring the manual-mode twin right above it.

AI Assistance

AI-assisted diff of encode paths within the command. The author reviewed the existing tr precedent and is responsible for the final diff.

Release Lane

• Stable hotfix targeting release/2.6.x
• Mainline change targeting main
• Next-minor work targeting the next feature/minor release
• Not sure; reviewer should help classify

Stable hotfix reason:

Not targeting the stable release branch directly.

Changed Surface

• Docs only
• Tests only
• Dashboard UI
• Installer
• Core runtime
• Dashboard API
• CI workflows

Validation

• bash -n ods/ods-cli - passed.