Fix build version injection

[canercidam]

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[claude]

Claude finished @canercidam's task in 42s —— View job

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PR Review: Fix build version injection

• Analyze PR diff and changed files
• Review .goreleaser.yaml in full context
• Check how version/build info is used in the codebase
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Summary

This PR adds the -X main.version={{ .Version }} ldflag to all four goreleaser build targets. Previously, the two darwin builds (darwin-amd64, darwin-arm64) had no ldflags section at all, and the two linux builds (linux-amd64, linux-arm64) had ldflags for the static linker flags but were missing the version injection. As a result, builder-playground version would always print dev for release builds.

The fix correctly targets main.version (main.go:25) which is used by the version command (main.go:504-510).

No issues found. The change is minimal, correct, and consistent across all build targets. LGTM.