refactor: /tests/integration/650.command.envelope.test.cjs

[hereje]

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Summary

• refactor: move and rename test file
• refactor: convert test file to esm
• refactor: replace ava with vitest

Related to: #5698

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📊 Benchmark results

Comparing with 83f04d9

• Dependency count: 1,303 (no change)
• Package size: 271 MB ⬇️ 0.00% decrease vs. 83f04d9