Add claude-ds script and template structure #323

Job	Run time
initialize / define-constants	3s
test / lint-and-build	50s
test / test-coverage (ubuntu-latest, 3.10)	1m 7s
test / test-coverage (ubuntu-latest, 3.13)	37s
test / test-coverage (ubuntu-latest, 3.11)	32s
test / test-coverage (ubuntu-latest, 3.12)	42s
test / test-coverage (macos-latest, 3.12)	38s
test / test-coverage (macos-latest, 3.10)	44s
test / test-coverage (macos-latest, 3.13)	35s
test / test-coverage (windows-latest, 3.10)	2m 18s
test / test-coverage (windows-latest, 3.12)	2m 8s
test / test-coverage (windows-latest, 3.13)	1m 40s
test / test-coverage (macos-latest, 3.11)	34s
test / test-coverage (windows-latest, 3.11)	2m 12s
report / report-coverage	33s
	15m 13s

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