refactor(hack): port merge-mac-metadata to Go, drop yaml.v2

[skevetter]

Summary

• Rewrites hack/merge-mac-metadata.py as hack/merge_mac_metadata.go, invoked via go run from the release workflow. Removes the pip install pyyaml step.
• Upgrades the two remaining gopkg.in/yaml.v2 callers (pkg/devcontainer/compose.go, cmd/pro/import_workspace.go) to gopkg.in/yaml.v3, so yaml.v2 is no longer a direct dependency.
• Adds a hack/ path exclusion for forbidigo/gosec in .golangci.yaml — build-time scripts legitimately need fmt.Printf and accept CLI-arg paths.

Summary by CodeRabbit

• Chores
  • Updated build and release infrastructure for improved efficiency.
  • Migrated YAML dependency to a newer version across the project.
  • Enhanced code linting configuration for better maintainability.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

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Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 58e571e9-fcf4-461f-acab-8cafe3d10059

📥 Commits

Reviewing files that changed from the base of the PR and between 6d352a6 and 67a7a8e.

⛔ Files ignored due to path filters (1)

• go.sum is excluded by !**/*.sum

📒 Files selected for processing (7)

• .github/workflows/release.yml
• .golangci.yaml
• cmd/pro/import_workspace.go
• go.mod
• hack/merge-mac-metadata.py
• hack/merge_mac_metadata.go
• pkg/devcontainer/compose.go

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📝 Walkthrough

Walkthrough

The PR migrates the macOS metadata merge tool from Python to Go, upgrades YAML dependencies from v2 to v3 throughout the codebase, and updates the release workflow to invoke the new Go-based implementation.

Changes

Python to Go Metadata Tool Migration with YAML v2→v3 Upgrade

Layer / File(s)	Summary
YAML v2 to v3 dependency upgrade go.mod, cmd/pro/import_workspace.go, pkg/devcontainer/compose.go	Direct dependency updated from gopkg.in/yaml.v2 to gopkg.in/yaml.v3 in go.mod, and all consuming imports updated accordingly.
Merge metadata tool rewrite (Python to Go) hack/merge_mac_metadata.go, .golangci.yaml	Replaces hack/merge-mac-metadata.py with a Go CLI tool that walks the metadata directory for latest-mac.yml and beta-mac.yml files, concatenates file arrays from each architecture-specific YAML, applies top-level metadata from the first entry, and writes merged output YAML; linter config adds forbidigo and gosec exclusions for the hack/ directory.
Release workflow integration .github/workflows/release.yml	Adds actions/setup-go@v6 step sourcing Go version from go.mod, and updates the metadata merge command to run the new Go tool instead of Python.

🎯 2 (Simple) | ⏱️ ~12 minutes

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