Apply gofmt fixes

[marcus]

Summary

• apply the repository's existing Go formatter across the current gofmt failure set
• revert accidental smart-quote comment regressions so the diff stays formatter/style scoped
• keep scope limited to existing lint/style enforcement rather than introducing new lint tooling

Validation

• go vet ./...
• go build ./...
• go test ./... (fails in unchanged internal/features with the same three known test failures: TestKnownFeatureDefaults, TestIsEnabledForProcess_EnableDisableLists, and TestIsEnabled_ProjectConfigAndEnvPrecedence)

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Automated by nightshift