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Add `typecheck` commands #9653

Job	Run time
Ruby analysis (ubuntu-26.04, nightly-latest)	34s
Ruby analysis (ubuntu-26.04, linked)	37s
Ruby analysis (ubuntu-26.04, default)	39s
Ruby analysis (macos-26, nightly-latest)	1m 15s
Ruby analysis (macos-26, linked)	50s
Ruby analysis (macos-26, default)	1m 7s
	5m 2s