Improve e2e test coverage and robustness #214

Job	Run time
sdist	2m 58s
macos (x86_64, x64)	3m 11s
macos (aarch64, arm64)	2m 24s
windows (aarch64-pc-windows-msvc, x64)	4m 45s
linux (aarch64-unknown-linux-gnu)	3m 48s
windows (x86_64-pc-windows-msvc, x64)	5m 24s
linux (x86_64-unknown-linux-gnu)	3m 39s
Test with Python 3.14	9s
Test with Python 3.12	11s
Merge artifacts	5s
	26m 34s

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