Fix CI build failures: resolve failing tests, clippy warnings, and formatting issues#2

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Copilot wants to merge 3 commits intomasterfrom

copilot/fix-77e063bc-c26f-4d2e-b6d7-991c207e8b96

Commits on Jul 29, 2025

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Copilot
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Commits on Jul 30, 2025

Fix failing tests - sparse functions, latex escaping, welch t-test, benchmark analysis

Copilot
and
acharneski
committed
Fix clippy warnings and rustfmt issues - CI build now passing

Copilot
and
acharneski
committed