butane/fcos: remove duplicate cex translation registration

[vishnu2ko5]

Removes a redundant translation merge call in translateBootDeviceLuksCex that was causing duplicate translation registrations for the enabled field.

The function translateBootDeviceLuksCex was previously calling both translate.Prefixed and translate.MergeP for the exact same enabled field in BootDeviceLuks.Cex. This PR updates the logic to simply translate the entire Cex struct using translate.Prefixed, which is sufficient and correctly maintains the TranslationSet.

This fix is applied across all experimental and stable FCOS Butane specs that support CEX (v1_6, v1_7, and v1_8_exp), preventing incorrect path tracking and duplicate entries for CEX-enabled LUKS configurations.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 9e2b242 and 26c248d.

📒 Files selected for processing (3)

• butane/config/fcos/v1_6/translate.go
• butane/config/fcos/v1_7/translate.go
• butane/config/fcos/v1_8_exp/translate.go

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📓 Path-based instructions (1)

**/*.go

📄 CodeRabbit inference engine (AGENTS.md)

**/*.go: Include the required Apache 2.0 license header at the top of every Go source file.
Use the project's import ordering in Go files: standard library imports, blank line, project packages, blank line, then external dependencies.
Follow the project's Go naming conventions: exported identifiers use PascalCase, unexported identifiers use camelCase, and filenames use snake_case.

Files:

• butane/config/fcos/v1_7/translate.go
• butane/config/fcos/v1_8_exp/translate.go
• butane/config/fcos/v1_6/translate.go

🔇 Additional comments (3)

butane/config/fcos/v1_6/translate.go (1)

364-364: LGTM!

butane/config/fcos/v1_7/translate.go (1)

364-364: LGTM!

butane/config/fcos/v1_8_exp/translate.go (1)

363-363: LGTM!

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📝 Walkthrough

Walkthrough

The FCOS v1.6, v1.7, and v1.8 experimental translators now translate the complete boot-device CEX structure instead of only its Enabled field.

Changes

CEX translation

Layer / File(s)	Summary
Full CEX structure mapping butane/config/fcos/v1_6/translate.go, butane/config/fcos/v1_7/translate.go, butane/config/fcos/v1_8_exp/translate.go	Each translator uses one prefixed call to map the complete Cex structure under the cex path. The separate enabled-field merge was removed.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 26c24

This is a small, localized cleanup of duplicate CEX translation registration across three supported specs, with no actionable merge-blocking risk remaining beyond normal checks and review.

Suggested reviewers: prestist

🚥 Pre-merge checks | ✅ 6

✅ Passed checks (6 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title uses the required subsystem format, lowercase description, imperative mood, and no trailing period.
Description check	✅ Passed	The description accurately explains the duplicate CEX translation registration fix and identifies all affected FCOS specifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Commit Message Convention	✅ Passed	The PR has one non-merge commit: butane/fcos: remove duplicate cex translation registration. It uses a valid subsystem, starts with lowercase imperative remove, and has no period.

✨ Finishing Touches

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• Create PR with unit tests

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