feat(release): deploy kernels to Tango

[jakubno]

No description provided.

[cursor]

PR Summary

Low Risk
Documentation and CI matrix only; deploy still uses the same upload script and per-environment GitHub vars, with no kernel build or binary changes.

Overview
Manual release deploy now includes the tango GitHub environment in the deploy job matrix so kernel binaries are uploaded to that environment’s GCS bucket alongside the existing targets. README’s deploy-environment list is updated to mention tango.

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